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Operator
Greetings -- welcome to Installed Building Products Fiscal 2022 Fourth Quarter Financial Results Conference Call. (Operator Instructions) I will now turn the conference over to Darren Hicks Managing Director of Investor Relations. Thank you. You may begin.
Darren Thomas Hicks - Director of IR
Good morning, and welcome to Installed Building Products' Fourth Quarter 2022 Conference Call. Earlier today, we issued a press release on the financial results for the fourth quarter, which can be found in the Investor Relations section of our website. On today's call, management's prepared remarks and answers to your questions may contain forward-looking statements within the meaning of the federal securities laws. These forward-looking statements include statements about future expectations, anticipation, beliefs, estimates, forecasts, plans and prospects. These forward-looking statements are based on management's current expectations and involve risks and uncertainties. Any forward-looking statements made by management during this call is not a guarantee of future performance, and actual results may differ materially as a result of various factors, including, without limitation, the potential adverse impact of the ongoing COVID-19 pandemic, general economic and industry conditions, rising home prices, inflation and interest rates, the material price and supply environment, the timing of increases in our selling prices and the factors discussed in the Risk Factors section of the company's annual report on Form 10-K as may be updated from time to time in our SEC filings. Any forward-looking statement speaks only as of the date hereof.
The company undertakes no duty or obligation to update any forward-looking statements as a result of new information or future events, except as required by federal securities laws. In addition, management uses certain non-GAAP performance measures on this call, such as adjusted EBITDA, adjusted EBITDA margin, adjusted net income, adjusted net income per diluted share, adjusted gross profit, adjusted gross profit margin and adjusted selling and administrative expense. You can find a reconciliation of such measures to their nearest GAAP equivalent in the company's earnings release and additional reconciliation for adjusted EBITDA for earlier fiscal years in our investor presentation, which are available on our website.
This morning's conference call is hosted by Jeff Edwards, our Chairman and Chief Executive Officer; and Michael Miller, our Chief Financial Officer; and joined by Jason Niswonger, our Chief Administrative and Sustainability Officer. I will now turn the call over to Jeff.
Jeffrey W. Edwards - Chairman, CEO & President
Thanks, Darren, and good morning to everyone joining us on today's call. As usual, I will start the call with some highlights and then turn the call over to Michael, who will discuss our financial results and capital position in more detail before we take your questions. IBP achieved another year of record net revenue, net income and adjusted EBITDA. For 2022, consolidated net revenue increased 36% to $2.7 billion. Net income increased 93% to $7.74 per diluted share and adjusted EBITDA increased 54% to $439 million. Throughout the year, we focused on supporting our residential and commercial customers during a very complex operating environment, including navigating continued supply chain challenges and aligning our selling prices with the value we offer customers.
The record 2022 results also extend our history of revenue, net income and adjusted EBITDA growth to 8 consecutive years, every year since IBP became a public company in 2014. I'm extremely pleased that our strong performance during 2022 allowed us to continue pursuing our growth-focused capital allocation strategy. We returned a record amount of capital to shareholders in 2022 by investing $138 million to repurchase 1.5 million shares of our common stock and distributing $63 million in cash dividends.
In addition, we completed 8 acquisitions representing approximately $109 million of annual revenue during 2022. We believe we can continue to pursue our growth-focused capital allocation strategy throughout the economic cycle, and we remain focused on creating value for our shareholders. Beyond the record results, our role in creating a sustainable future through installing products that promote energy efficiency is an important component of how we define success. During 2022, we published our second annual ESG report outlining the progress we have made along our ESG journey. Employee turnover remained significantly below industry averages, which we believe is a direct result of the investments made in our employee programs since 2017. Since our inception, we have worked hard to promote a culture of doing what's right, and we believe we can continue to make a positive impact in the lives of our employees and the communities in which we operate.
Our success in 2022 is also a reflection of the resiliency of our business model, our competitive position within key geographies and end markets, the strength of our balance sheet and the experience and dedication of our senior leaders and employees throughout the company. Since our IPO in 2014, net revenue, adjusted EBITDA and net income have grown at compound annual growth rates of over 20%, 33% and 40%, respectively. During this period, we have completed almost 80 acquisitions, expanding our footprint across the U.S. and diversifying our revenue to additional end markets and product categories. This track record of performance is a direct result of our over 10,000 hard-working employees across the country.
To everyone at IBP, thank you for your commitment and a tough job always done well. With this overview, let's look into our 2022 full year end market performance in more detail. 2022 was another excellent year of residential sales growth. Within our Installation segment, we experienced a 29% increase in residential same-branch sales from the prior year, which was driven by a 29% increase in single-family same-branch sales and a 31% increase in multifamily same branch revenue. By comparison, total U.S. residential housing completions increased by 4% in 2022. While total housing completions growth continued to improve both sequentially and year-over-year during the fourth quarter, we believe U.S. housing completions remain affected by extended residential construction cycle times.
Compared to the same period last year, price mix improved 23% in 2022. Consistent with the inflationary trends in the construction industry and the increasing demand for our services, our pricing efforts and a relatively stable product mix contributed to the largest annual increase in price mix we have achieved since becoming a public company. We continue to make any necessary adjustments to align our pricing with the value we offer our customers. Within our commercial business, same-branch sales increased 7% in 2022, driven by light commercial project growth, which more closely aligns with residential activity. With respect to heavy commercial, bidding activity and project bid acceptance rates remained steady in the fourth quarter relative to the third quarter, and we are focused on improving our operational efficiency while pursuing projects with favorable economics.
We continue to expand our business through acquisitions, prioritizing profitable growth through targeting well-run companies that install insulation and other complementary building products. During the 2022 fourth quarter, we completed 3 acquisitions, including the North Carolina and South Carolina installer of fiberglass insulation, spray foam insulation and gutters into new residential projects with annual revenue of approximately $21 million. A Pennsylvania installer of spray foam and fiberglass insulation into residential and commercial projects that also applies fireproofing and waterproofing to commercial structures with annual revenue of approximately $10 million and the Montana installer of fiberglass and spray foam insulation into residential and commercial projects with annual revenue of approximately $5 million.
Throughout 2022, we completed 8 acquisitions representing approximately $109 million of annual revenues, surpassing our $100 million acquired revenue target. Earlier this month, we acquired 4 State Insulation, a residential insulation installer servicing Virginia, Maryland, West Virginia and Delaware, with annual revenue of approximately $4 million. Looking ahead, our acquisition pipeline remains robust and includes opportunities across multiple geographies, products and end markets.
As a result, we expect to acquire at least $100 million of revenue once again in 2023. While 2023 will present market challenges, there are also many opportunities. The backlog in our growing multifamily business is longer than 1 year. while the national backlog of single-family homes is coming down, the number of units under construction continues to be at an historically high level according to the U.S. Census Bureau. We anticipate solid financial improvement in our heavy commercial business and strong execution in our repair and remodel business helped drive growth of nearly 50% in Q4 2022 with incentives from the inflation Reduction Act of 2022 likely to support demand this year.
So, with this overview, I'd like to turn the call over to Michael to provide more detail on our fourth quarter financial results.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Thank you, Jeff, and good morning, everyone. Consolidated net revenue for the fourth quarter increased to a fourth quarter record of $686 million compared to $534 million for the same period last year. The 29% year-over-year improvement in sales during the quarter was mainly driven by an improvement in price mix and the revenue contribution from recent acquisitions. Our installation segment revenue increased 23% to $641 million, driven by strong growth across IBP's residential new construction market. The other segment revenue, which includes IBP's manufacturing and distribution operations, increased to $48 million from $12 million driven by strong operating results as well as the December '21, 2021 acquisition of AMD distribution and the April 2022 acquisition of Central Aluminum.
On a same branch basis, installation revenue improved 20% from the prior year quarter, driven by single-family same-branch sales growth of 18%. Multifamily same-branch sales increased 37%. Our 2022 fourth quarter residential same-branch sales growth was 21% above the prior year quarter, while same-branch commercial sales increased 13% in the 2022 fourth quarter. Adjusted gross profit margin improved 240 basis points year-over-year to 31.7% in the fourth quarter, which benefited from strong price/mix growth during the quarter. It is important to highlight that our segments have different gross profit profiles. During the 2022 fourth quarter, our installation segment's gross margin was 34% compared to the other segment gross margin of 24%. We believe it is relevant to note the segment impact on our reported gross profit margin since our other segment includes our more recent acquisitions in the distribution business.
The acquisition of AMD Distribution had a limited impact on the prior year fourth quarter as the deal closed in December 2021. The other segment's impact to gross margin in the 2022 fourth quarter was about 70 basis points. Adjusted selling and administrative expense as a percent of fourth quarter sales improved approximately 70 basis points to 16.7% from the prior year period. The year-over-year improvements in selling and administrative expense relative to sales during the fourth quarter reflects our ability to leverage administrative costs and higher operating expense leverage at the distribution businesses.
On a GAAP basis, our fourth quarter net income per diluted share of $2.42 increased 144% from the prior year quarter, and our adjusted net income per diluted share improved 71% to $2.43 per diluted share. During the 2022 fourth quarter, we realized a $15 million gain on acquisition earn-outs. -- primarily due to the incentive structure of certain acquisitions completed in 2022. We do not expect to realize similar gains on future acquisitions. During the 2022 and 2021 fourth quarters, we recorded amortization expenses of $10 million related to the acquisition of new businesses. This noncash adjustment impacts net income, which is why we continue to believe that adjusted EBITDA is the most useful measure of profitability. Based on recent acquisitions, we expect first quarter 2023 amortization expense of approximately $11.2 million and full year 2023 expense of approximately $42.5 million. We would expect these estimates to change with any acquisitions we close in future periods.
Adjusted EBITDA for the fourth quarter of 2022 improved 54% and to a fourth quarter record of $115 million. Adjusted EBITDA as a percent of net revenue was 16.8% for the 2022 fourth quarter, a 280 basis point improvement from the same period last year. Same branch incremental adjusted EBITDA margin was 33.6% for the fourth quarter compared to 6.2% for the same period last year. We continue to target full year long-term incremental EBITDA margins in the range of 20% to 25%. For the 2022 fourth quarter, our effective tax rate was approximately 25.9%, and we expect an effective tax rate of 25% to 27% for the full year ending December 31, 2023.
Now let's look at our liquidity, balance sheet and capital requirements in more detail. Our business model continues to generate strong operating cash flow. For the 12 months ended December 31, 2022, we generated $278 million in cash flow from operations compared to $138 million in the prior year period. The year-over-year increase in operating cash flow was primarily associated with higher net income, lower net working capital requirements and proceeds from the termination of interest rate swap agreements for the 2020 full year.
Through interest rate swap agreements, we fixed the interest rate on $400 million of our existing variable rate debt until December 2028, limiting our interest rate exposure, and we have no significant debt maturities until 2028. At December 31, 2022, we had a net debt to adjusted annual EBITDA leverage ratio of 1.46x compared to 1.87x at December 31, 2021, which is well below our stated target of 2x. At December 31, 2022, we had $327 million in working capital, excluding cash and cash equivalents. Capital expenditures and total incurred finance leases for the year ended December 31, 2022, were $48 million combined, which is 1.8% of revenue compared to 2% for the same period last year.
With our strong liquidity position and modest financial leverage, we continue to invest in our acquisition strategy and return capital to shareholders. During 2022, we returned approximately $200 million to shareholders through dividends and share repurchases. IBP repurchased 1.5 million shares of its common stock at a total cost of $138 million during 2022, which includes nearly 300,000 shares repurchased during the 2020 fourth quarter at a total cost of $25 million, including commissions. Our Board of Directors recently authorized a new stock repurchase program that allows for the repurchase of up to $200 million of our outstanding common stock. The new repurchase program replaces the previous program and is in effect through March 1, 2024.
Today, we announced that IBP's Board of Directors approved the first quarter dividend of $0.33 per share, representing a 5% increase to our most recent dividend payout. The first quarter dividend is payable on March 31, 2023, to stockholders of record on March 15, 2023. Also, as part of our established dividend policy, today, we announced that our Board has declared a $0.90 per share annual variable dividend, in line with the variable dividend we paid last year. The 2023 variable dividend amount was based on the cash flow generated by our operations with consideration for planned and expected cash obligations, acquisitions and other factors as determined by the Board. The variable dividend will be paid concurrent with a regular quarterly dividend on March 31, 2023, to stockholders of record on March 15, 2023.
We are committed to continuing to grow the company while returning excess capital to shareholders through our dividend policy and opportunistic share repurchases. With this overview, I will now turn the call back to Jeff for closing remarks.
Jeffrey W. Edwards - Chairman, CEO & President
Thanks, Michael. I'd like to conclude our prepared remarks by once again thanking IBP employees for their hard work, dedication and commitment to our company. Our success over the years is made possible because of all of you. Operator, let's open up the call for questions.
Operator
(Operator Instructions) Our first question is from Stephen Kim with Evercore ISI.
Stephen Kim - Senior MD & Head of Housing Research Team
Thanks for all the color, but I do have some additional questions. I guess the first one was that your price mix looks like it improved sequentially. You had mentioned, I think that your annual mix was stable. I was curious, was there a mix impact in the 4Q sequential move as you went from 3Q to 4Q? And -- and on the other side, volumes were weaker than we expected. And so, I'm kind of curious if you -- if we should expect volumes to be a headwind again to sales as we head into 1Q '23?
Michael Thomas Miller - CFO, Executive VP of Finance & Director
This is Mike. Good morning, everybody. Thanks for being on the call. So, on the price mix question, we did have certainly more than we've had through the rest of -- through the first 3 quarters of this year, a mix benefit. And that mix benefit was a combination of both higher growth rates from our regional and local builders and also higher growth rates of spray, which has a higher average job cost than Fiberglass does. So, we did see some mix benefit, but most of the price/mix improvement in the quarter and through the year was price driven.
On the volume side, we will always value price over volume. But I would say that the quarterly comparison of our volume metric disclosures compared to completions is not always going to perfectly align. The way that we sort of look at the volume growth is -- on a full year basis, volumes grew 5.5%, whereas completions grew about 3.7%. So we feel good about where we are in terms of the number of jobs that we're doing. But as I said, we will always value price over volume.
Stephen Kim - Senior MD & Head of Housing Research Team
Okay. That's fine. Helpful for that helpful. And so, the second question I had related to -- relates to some comments you made last quarter. I think you said that you would be quick to take any necessary staffing actions in order to protect your incremental margin. So, I was curious as to whether any of those kinds of actions was a contributor to the strong incrementals this quarter? Or was it really just -- or is that not really something that you found necessary to do?
Jeffrey W. Edwards - Chairman, CEO & President
It wasn't necessary. This is Jeff Edwards. -- by the way. So no, we're not even close. So still busy. It's still a healthy environment for us out there.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Sales growth grew 20% during the quarter. So...
Stephen Kim - Senior MD & Head of Housing Research Team
Right. Great. No, it's obviously great to hear. And then last one for me is just that the builders have recently been talking somewhat excitedly about a pretty significant pickup in January and continuing into February. The Toll Brothers folks just basically said that their most recent week was the strongest they've seen all year despite the start to tick up back up in rates. And so, I was just curious if you could talk a little bit about to what degree that is if you're sensing any of that in your conversations and negotiations with your builder customers?
Jeffrey W. Edwards - Chairman, CEO & President
Yes. We're -- this is Jeff again. We're hearing the same kind of positive news, which is certainly good news. And so, as we all know, we're working through a backlog, but at the same time, to the extent that there are -- as what has been referred to as green shoots by a number of new folks and others and hearing it directly from Billers, I think we feel certainly a lot more positive about it than you would have based on their commentary within the last even 45 days.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
I mean obviously, it's still very early in the year, very early next spring selling season, but the very constructive commentary that we're hearing, particularly from the private builders is very encouraging.
Stephen Kim - Senior MD & Head of Housing Research Team
Okay. That's really helpful.
Operator
Our next question is from Michael Renault with JP Morgan.
Michael Jason Rehaut - Senior Analyst
It's Mike Rehaut. Appreciate it. First, I'd love to hear your thoughts kind of more broadly on 2023. Obviously, there's a lot of uncertainty still out there in movement. But obviously, you've seen the sharp declines in housing starts over the last several months. And any kind of broad thoughts in terms of how you're thinking about the end market from a completion standpoint in 2023, how it might impact your business would be helpful.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
This is Michael. No doubt, I mean everyone on this call knows that permits and starts have been down pretty significantly over the past couple of months. We do believe that particularly as the comps get easier, there will be some relative stabilization there. As we all also know that the homes under construction to the backlog, both single family continues to be strong on a relative basis. Multifamily is at a very high level. Clearly, we have to get the multifamily completion center growing and bring that backlog down because it's not a very healthy situation where it is right now. But we believe that over the course of 3 there will be improvement on the multifamily completions front, which is important for us because we really made a concerted effort to grow our market share on the multifamily side, which is now 13% of our total revenue. So, we feel very good about the opportunity there in '23. On the single-family side, I mean, the backlog is starting to slowly come down. Given the permits and starts environment and the order numbers that the public builders have disclosed, I mean there should be for the industry, some impact for that as we go into the back half of the second quarter as well as probably the third quarter of this year. But as we were talking in the previous question, -- to the extent that we have a solid spring selling season, which there are a lot of indications that, that will be the case.
The cadence of completions versus permits and starts should be such that you're not going to see -- assuming a strong spring selling season, you're not going to see that much of a delta or decline in our opinion, on single-family completions because builders in many conversations that we've had with both public and private builders, I mean, they are getting ready for this pickup in order and sales activity so that they can quickly start getting home still. A lot of the front-end trades are not nearly as busy right now. And I think the -- everyone is ready to go. -- they unlike, say, during the -- sorry for maybe going a little bit deep on your question, but unlike, say, the -- great Recession, which lasted as long as it did and you had significant contraction in capacity within the industry, we are not seeing that happen right now. What we're seeing is that the industry itself is basically staying size up because we're all anticipating that this slowdown or pause is not going to be extended and that as we go through the rest of this year, we'll get back to a more normal cadence.
Michael Jason Rehaut - Senior Analyst
Appreciate it. Obviously, like we both said, still a lot of moving parts. I guess secondly, I'd love to hear your thoughts on price mix for the upcoming year. Obviously, there's been a manufacturer price increase by different producers in January -- December, January, if you could talk to the realization of that price increase. And as you progress during the year, I don't know if you've had any discussions already with your builder partners about any type of change in pricing structure or that might impact margins? So, kind of a 2-parter there, first on pricing and the OEM price increase and then just thoughts around price mix for '23.
Jeffrey W. Edwards - Chairman, CEO & President
Well, as Michael mentioned, to the second part of that question, as Michael mentioned earlier, I mean, we make sure that we get paid a fair price and definitely geared towards an index towards pricing versus volume. And so, we'll continue our managers and salespeople like to say, we don't work for free. So ultimately, I think from a pricing perspective, this is a tough job. -- it's a tough business, right? And we told that story before. But on average, the head out to the house 3x in order to collect $3,500, let's say, on an average house to put fiber less insulation in the wall, that's a tough thing to do, right? And so, we deserve, I think what we get paid. We show up on time and we pass inspections and so that's kind of our attitude. And we've kept that through good times and bad times.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
And we are constantly in dialogue with both the manufacturers and our customers about price and making sure that, as Jeff said, that it's a fair and reasonable price for everybody. I would say on your comment about what we don't provide guidance. I think if you just look historically, our price mix this year is at an unprecedentedly high level compared to prior years. And we certainly wouldn't expect to have that kind of outsized price mix growth in 2023.
Michael Jason Rehaut - Senior Analyst
And just the realization of the December, January price increase, if you could provide any insights into how that's going?
Jeffrey W. Edwards - Chairman, CEO & President
Well... We buy from all 4. Yes. We buy from all 4 manufacturers we're in constant dialogue with them.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
And it's our job to try to do as well as we can any negotiations around that topic. Clearly, as you pointed out, there's a price increase in January. And we'll see. It's still a tight industry in terms of -- especially on blowing well, there's a little bit of room on that. So at least we're not having to run to supply houses in Home Depot and Lowe's, et cetera, like we had talked about in previous calls. So clearly, that's made our life easier as it relates to kind of running the business on a day-to-day basis. But Boeing continues to be very tight and there's not really a clear sight into seeing where that isn't still the case.
Operator
Our next question is from Susan Maklari with Goldman Sachs.
Susan Marie Maklari - Analyst
Good morning everyone and congrats on a great quarter and a great year. My first question is when we think about the dynamics between volume and price mix for this year, obviously, in '22, it was really driven by that price/mix in '21. We saw that it was more volume, kind of driven point in there. How do you think about it going forward? When do you think that those 2 will start to converge more closely together the way that we had seen pre-COVID.
Michael H. Thomas - Independent Director
Well, again, we don't provide guidance, but given our commentary from the last question, just about what completions might end up looking like and what the 23 looks like for the industry. I mean I think what I would say to you is that the likelihood of price mix and volumes being more or closer to historical averages would probably be in '24 or the latter half of '23. Okay.
Susan Marie Maklari - Analyst
And then my follow-up is, you obviously made a lot of progress on the gross margin as well, which was really impressive for the quarter. How do you think about holding on to some of that as conditions perhaps normalize out there? And just more broadly, sort of what is the new normal in terms of that gross margin line.
Michael H. Thomas - Independent Director
Sorry... I joke on something I know I wasn't joking that the gross margins would be great, but the -- I mean we feel very good about where the gross margin is right now. I mean, if you look historically over the past several years, I mean, we've sort of been in a fairly tight range on gross margin, and we will continue to work hard to continue to improve gross margin to maintain gross margins. And our -- most of our improvement in EBITDA margin over the past several years has really come from G&A leverage and not just improvement in gross margin. So, we, as Jeff said earlier, we don't work for free. We want to get a fair price for what we do. And we believe it's very appropriate given the difficulty of the job that our installers are doing.
Jay P. Elliott - COO
I was slow to chime in mostly because I was worried that I was going to have to give Michael to highlight he didn't look good. So...
Susan Marie Maklari - Analyst
Well, those margins are impressive. So... Exactly... So, to think about it... All right. Thank you, and good luck. Our next question is from Mike Dahl with RBC Capital Markets.
Michael Glaser Dahl - MD of U.S. Homebuilders & Building Products
Just another follow-up there. If we look at the growth trajectory, the details that you provided in terms of the underlying dynamics between installation and other, you do see more of that gap on margins where maybe a few years back, you would have been in the high 20s, and now you're in the 34% range. So, it seems like on a like-for-like basis, there's been a notable step-up and unique backdrop, talk of kind of the builders and some of the excitement out there, but also what they're talking about is pushing back more on suppliers. There's conjecture that an installer like yourselves would be the ones that would be at risk of being kind of squeezed out in the middle as kind of the OEMs hold firm and the builders try to push back on trade. Your price comments and price versus volume comments seem a little more pointed, maybe I'm reading into it. But what are you hearing in terms of kind of that pushback against the trade base as everyone is trying to drive cost out? And are you seeing something different that's making you say like, hey, maybe we are going to end up giving up a little volume this year as we look to be more disciplined on price?
Michael H. Thomas - Independent Director
Yes. We will favor price over volume, no doubt. And as a company that has been fairly -- that's been consistent historically that we would favor price over volume. And as we go through the course of the year, obviously, we're going to make adjustments as necessary. And we are in -- we're constantly communicating with both our customers and the manufacturers to make sure that our price costs are in line. As we've said before, we are a very small percentage of the overall cost of the home, and we are selling an installed solution. So, we're not just selling material. We're adding a lot of value by providing our installed solutions. And in the case of insulation, not only does it have to pass inspection, but it also was required by code. So, the builders can't decontent us. And I think that's -- and we're a very important part to the cadence of the house, even though we are a very small percentage of the overall cost. So -- we believe all of those things help us to achieve a fair balance between the cost of the products that we purchase to install and the price that we get from our customers to do that installation.
Michael Glaser Dahl - MD of U.S. Homebuilders & Building Products
Okay. That's helpful. And my second question is, you made interesting comments about the R&R side and the inflation reduction act clearly, there's some nice incentives out there. reinflating homes still can be a pretty disruptive process. So maybe just give us a little more color on what you're seeing in terms of the R&R side, how much of an impact or if there's any quantification you can provide around what you think the IRA has meant or could mean to your business in '23 would be helpful.
Jason Niswonger
Yes. This is Jason. Mike. I will say that the in-place Reduction Act does provide us opportunity on the repair and remodel side. As you pointed out, it is a bit disruptive. And it's more so a fact that it's a different go-to-market strategy than what we typically see with the majority of our business, our installers are used to go into a job site, not into somebody's home. So, it is something that, while we do have and see opportunity from the Reduction Act in terms of what it could mean for us in terms of providing some stability or upside opportunity, it is not necessarily a widespread or a nationwide opportunity for us.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
I would say that just on that is that the inflation reduction that really doesn't have the financial impact or won't just starting to have it now because the increases in the credits that you received that those increases went into effect January 1 of '23. And our -- in the fourth quarter, the repair and remodel business, as we -- as Jeff mentioned in his prepared remarks, it was up almost 50% and is now almost 9% of our overall revenue. So when we think about interesting opportunities in -- from a sales growth perspective in '23, we certainly are encouraged by the strength that we've seen in both and continue to see in both repair and remodel and multifamily, which on a combined basis are over 20% of revenue...
Operator
Okay. Our next question is from Trey Grooms with Stephens.
Noah Merkousko
This is actually – Noah Merkoska on for Trey. -- so first, pricing really strong this past year in '22. I was hoping you could maybe quantify something without any additional pricing actions in '23, how much carryover benefit does pricing achieved in '22 contribute to growth this year?
Michael Thomas Miller - CFO, Executive VP of Finance & Director
You mean how much carryover is there still left to realize in '23?
Noah Merkousko
Right. Because given the timing of price increases partially through last year, just what at a minimum can we expect?
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Well, we don't provide guidance. And it would -- I would say that each quarter, it's going to come down, which is an obvious statement. As we're going through this first quarter, we are continuing to realize good price mix.
Noah Merkousko
Got it. That's helpful. And I appreciate that you don't give guidance. And thank you for all the prior commentary on price and volume as we look to '23. But given that there's some risk to volume in 2Q, 3Q, maybe even 4Q still getting a little price. I mean is it unreasonable to expect that you can grow overall revenue in '23?
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Well, again, we don't provide guidance. But -- that is really going to depend on what happens with the single-family completions and the housing market as it unfolds and when I'm saying in the housing market, I mean the single-family market as it unfolds during the course of the year. While we have heavily diversified our end market revenues, 60% of our revenue is still new single family. So, I think the spring selling season is important this year. It's important every year, but I think it's -- the focus on it is going to be higher this year than probably in past years. And as we said earlier, we think that there's very encouraging signs around a potential solid spring selling season. And I think that will benefit the whole industry going through the course of ‘22.
Noah Merkousko
Got it. That's helpful, and good luck with the rest of the year.
Operator
Our next question is from Adam Baumgarten with Selman in Asia...
Adam Michael Baumgarten - MD
Question on price increases. At this point, do you guys expect the manufacturers -- the fiber gas manufacturers to announce additional price increases at some point this year?
Michael Thomas Miller - CFO, Executive VP of Finance & Director
I mean, certainly, they still are experiencing inflationary circumstances, let's just say, in certain parts of -- from an input perspective, et cetera, although there's maybe a little bit of weakening of certain system freight and some other things. But we'll see. I think, as I mentioned earlier, bones is tight. That are not so much. So, I'm certainly well would like to it that way.
Adam Michael Baumgarten - MD
Makes sense...
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Usually there might be one additional price increase announcement this year. But obviously, we don't know that their decision and they'll make it. And I think it will completely depend upon how the market unfolds.
Adam Michael Baumgarten - MD
Yes. Okay. Makes sense. And then just switching gears to commercial. You have a slide in the deck that came out this morning about 3 areas outside the core that you seem to be targeting with expansion join through frustration and building restoration. I guess, question, are you currently in those areas? And if not, is that an acquisition opportunity for those areas of focus?
Michael Thomas Miller - CFO, Executive VP of Finance & Director
We're just looking at different scope support. So, it's not stuff that we're doing a lot of right now, but it's just a question of what we're -- as we've talked on previous calls, we haven't been -- we've been disappointed in the financial performance of the heavy commercial operations. We expect to see pretty significant improvement in those operations over the course of '23. And we're looking at different scopes of work that will continue to help that improvement in the heavy commercial group. -- which just to level set, given the growth that we've seen across all of the other businesses, the heavy commercial business is like 5%, 6% of overall revenue. So, it's not a significant component, but it's an important component. And we do think that it presents some interesting long-term growth opportunities for us.
Operator
Our next question is from Phil Ng with Jefferies.
Margaret Eileen Grady - Equity Associate
This is Maggie on for Phil. First, I guess, could you talk about your backlog or maybe even more broadly, the industry backlogs and kind of contextualize that units under construction metric being at these historic highs and how that kind of translates to volumes for you and how far that carries you into 2023?
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Well, the -- I mean, I think right now, when you're looking at the units under construction, you definitely have to make the distinction between single-family and multifamily. Multifamily is really at an unprecedentedly high level right now. It is the multifamily unit backlog is actually larger than the single family, which I don't think there are very many times in history where that has actually happened. So, we believe that from an industry perspective, the backlog in multifamily is multiyear at this point. And as we said earlier in a previous question or an answer to a previous question, we do believe that we'll see -- and we think we need to see improvement in multifamily completions through the course of '23. As it relates to the single family, it still is in that sort of 70,000,000 150,000 unit range, which we think is reasonably healthy.
That theoretically in pause if you had a more normalized multifamily backlog, probably like a 1.2-or-so pace for completion. And while that's below what most people would expect to be sort of a long-term average of $1.5 million, it still is a very comfortable level.
On the single-family side, in terms of what that backlog means for the industry, as we said, again, in an answer to a previous question, a lot is going to depend upon the spring selling season, which is looking very encouraging right now. But given the decline that we've seen in the past, couple of months even longer of permits and starts, I think it's logical to assume that you would have an impact relative to single-family completions as we go through the end of the second quarter and into the third quarter potentially. Again, I'm going to caveat that statement though, based on what happens with the spring selling season and how quickly the builders, which we think is pretty quickly, how quickly builders can react to what is potentially going to be a solid order growth.
Margaret Eileen Grady - Equity Associate
Okay. Great -- and then I guess on that, it's been touched on a few times on the call so far, kind of the more recent optimism from the builders. And I think late last year, coming into this year, the consensus was kind of we would need to see interest rates come down or at least stabilize or some progress on getting home prices at a more affordable level for these mortgage rate levels to really see a rebound in housing demand, but we haven't really seen significant progress on either of those. So, from your conversations with customers, what's their sense? What are they attributing this more recent strength to? And how sustainable do they see that?
Michael Thomas Miller - CFO, Executive VP of Finance & Director
I mean I think it's more indicative of the idea that we haven't even -- we never did get back to stabilize kind of 1.5 million type production on residential. And so, from that perspective, it's underbuilt. And it was only so long that the market could essence sit on the sidelines. -- at least, although I've heard that a lot of what's happening is that there wasn't -- they have picked up a Michigan too, but they pulled back from 7 closer to 6%. There's been maybe limited interest in adjustable rate mortgages unlike maybe in the past, I've heard that. But I think there's been an offer of buy-downs from the builders, but that many times, it gets somebody in the door, but they ultimately end up not using it. It still go ahead and end up as not only a traffic unit, but as a buyer. I know anecdotally from the fact that we're selling a few things that some buyers are clearly looking at the idea that if they could do a 1 year or 2 year or even a 3-year with no penalties to get out of it, they can kind of ride through this period of time here, but they've got to kind of move on with their life, right? And they'll refi as to settle down here over the next, hopefully, 12 to 24 months.
Jeffrey W. Edwards - Chairman, CEO & President
Yes. I think the home buyer is adjusted and they're accepting the new reality. And I think people have come to grips on the fact that they're not going to get a 3% mortgage and they still need some place to live and their family is growing or they got a new job and what goes on... I mean it's -- for those of us that are pretty old, I'll be 60 in June, that's not very old, but old enough, I guess, 6% or in that range is pretty darn attractive historically it's only those that have kind of been familiar with the last 15, 10 really 10 years or less, right, where the freight rates that have been less way less than that is one of my other about probably 4 that you've read so much about.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Yes. Okay. Got it. And good luck on the next quarter.
Operator
Our next question is from Jeffrey Stevenson with Loop Capital Markets.
Jeffrey Patrick Stevenson - VP
I was wondering if you could provide any additional color on how installation volumes trended throughout the quarter because volumes were a little lighter than anticipated and wondered if earlier in the construction season around the holidays played any role in that? Or was it largely due to the tough completions comp you referenced earlier.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Yes. It's really more just the timing of when we're doing work, quite frankly. And as we said earlier, and I think if you -- looking at it on a full year basis in terms of our volume growth at 5.5% versus total completions growth of 3.7% makes sense. And we will favor price over volumes, and we think that, that is the right decision. And we have lots of experience where we give up volume in the short term only to get it back because our competitors can't perform to the level that our customers want. So, we're happy to be patient and wait for volume.
Jeffrey Patrick Stevenson - VP
Now, that makes sense. And then my second question is one of your primary differentiators as your asset-light model and high variable cost structure. And I'm just wondering, as we move into the spring construction season, what indicators you'll be following to determine whether you need to make any adjustments if demand improves or slows more than anticipated.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Well, fortunately, because our cost structure, the bulk of our costs are material and installed labor, and they flex to the volume of jobs that we have and the job opportunities that we have. So, we continuously make adjustments to the installer workforce and the amount of material that we're acquiring or purchasing knowing in advance what our expected volumes are. So, I would say that the macro information that is available is helpful to inform our outlook. But the most important thing that we run the business by is what's going on at the local level on a day-to-day basis. It's that constant communication with our customer about what they're expecting from a volume perspective in the jobs that they're on. So, it's a constant situation where we're adjusting the business.
Now if we have which is completely unexpected or not anticipated from our perspective. But if we do have an extended -- if the spring selling season is bus, which we do not expect, but if that's the case, then we will continue to make adjustments not just to the installed workforce and material purchases, but we will make adjustments to the other variable costs in the business. But right now
from all the information that we have and all the feedback that we received from the field, we feel constructive given a very uncertain environment.
Operator
Our next question is from Dan Oppenheim with Credit Suisse.
Daniel Mark Oppenheim - Research Analyst
Great. And thanks for the comments in terms of your expectations and sort of the long term based on sort of building and such. Just wondering if you think about the acquisitions that you're looking at through dialogue with some of the smaller companies out there, how does your outlook for the coming years in terms of thinking about sort of continued growth in getting back to sort of normalized construction impact to your thoughts on acquisitions? Does it make you look to do more this year in terms if there is a short-term slowdown, should we expect you to then sort of think in terms of long term and growth via acquisition here during '23? I'm just wondering how you're looking at it overall.
Jeffrey W. Edwards - Chairman, CEO & President
Well, this is Jeff. I mean, we continue -- as we even said in our prepared comments, to kind of target at least $100 million a year in revenue acquisition, maybe straight down the fairway in terms of kind of what we're used to in normal in terms of products, et cetera, and acquisitions. But what I would say is, I mean, we basically, for the most part, we're buying business is obviously off of trailing earnings, right? And I don't think there's very many contractors out there at this point that are showing numbers that reflect a great deal of weakness. And historically, what I would say from the last time there was any degree of weakness. There's -- I mean, chances are unless there's a health issue or something else. None of these sellers are necessarily forced by any means to sell. They almost never have any debt. They're not in a tight spot. And if the numbers aren't where they would like them to be in terms of kind of them having a good and profitable year, they're probably not going to be sellers. So, I don't see us just historically speaking and thinking about what's coming and get us picking up a little while of margins. I think it's going to be very normal in that regard.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
So honestly, we'd rather -- we like it when the buyer feels good when the seller feels good about the kind of the transaction and when we feel pretty good about the purchase that usually makes for kind of a more copasetic smooth transition and go forward, we ended with a better business ultimately. So...
Jeffrey W. Edwards - Chairman, CEO & President
But I would say that M&A is our #1 capital priority. Our balance sheet is such that if there are opportunities beyond the $100 million that Jeff referenced in terms of targeted acquired revenue, we will absolutely do those acquisitions. We believe that the current environment, while there is a lot of uncertainty, if we look long term, because we're not buying these businesses for a quarter or for a year, we're buying them for the long term. We believe fundamentally, long term, that the new residential construction market in the United States has -- the backdrop, the demographic backdrop and the fact that we -- even with the acceleration that we saw in '21 and '22, we have, for the past -- more than the past 10 years, underbuilt housing in this country. And fundamentally, if we look over the medium to long term, we believe that's extremely constructive for our existing business and as well for all of the M&A that we're looking at. Absolutely.
Operator
Our final question is from Jonathan Bettenhausen with Truist Securities.
Jonathan Bettenhausen
One for Keith Hughes this morning. So pricing was strong in Q4, and you mentioned that you're prioritizing that over volume. But with that in mind and without giving specific guidance, I was wondering if you could kind of talk about your confidence level that margin expansion will continue through 2023 if volumes come down.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Well, again, we don't provide guidance. But as we said in an answer to an earlier question, if you look on average over the past 5, 6 years, I mean, gross margin has been sort of in that 30% range, high 20%, 30% range. And because we're going to value price over volume, we believe that the historical range should be consistent as we go through the next couple of years as well. Clearly, a lot of the -- or some of the G&A leverage that we've been getting, which has been helping to improve our EBITDA margin is because of high volumes and/or price mix growth. So, we wouldn't expect that if we were in a lower volume -- lower growth volume environment, lower growth price/mix environment, we would not expect to get the same G&A leverage improvements that we've been getting, particularly in '22. But quite frankly, we have -- since the day we went public, we have always talked about mid-teens EBITDA margins when we reach stabilization in the housing industry. as Jeff said, we'd call it completions of about 1.5, 1.6, which Jeff pointed out in the answer to your earlier question, we -- even through '21 and '22, we did not get to that point, but yet we are at mid-teens EBITDA margins. We've actually been there for a couple of years now. So, we feel very good about our ability to sort of maintain the margin profile. And when we say things like that, we don't mean quarter-to-quarter, we mean on a full year basis, and we don't look at the business, although we had to report quarterly. We do not look at the business necessarily on a quarterly basis. We're looking and making investments for the medium and long term because that's fundamentally how we build a great business.
Operator
Sure. We have reached the end of our question-and-answer session. I would like to turn the conference back over to management for closing comments.
Michael Thomas Miller - CFO, Executive VP of Finance & Director
Thank you all for all your questions, and I look forward to our next quarterly call.
Jeffrey W. Edwards - Chairman, CEO & President
Thanks again.
Operator
Thank you. This will conclude today's conference. You may disconnect your lines at this time, and thank you for your participation.