The United States had about 145.9 million housing units at the end of 2023, and the median owner-occupied home reached 42 years of age in 2024, the oldest on record (U.S. Census Bureau; National Association of Home Builders analysis of the 2024 American Community Survey). Because roofs wear on a clock set by the year a house was built, an aging housing stock is the clearest leading signal of where roof-replacement demand is building. This briefing assembles the federal data on housing age, roof condition, and roofing-material life expectancy to map that demand, and it flags where the federal record is thin.
Executive Summary
- The median age of owner-occupied homes in the United States rose to 42 years in 2024, up from 40 years in the 2022 American Community Survey and 31 years in 2005 (NAHB analysis of the 2024 American Community Survey, March 2026).
- Roughly 47 percent of owner-occupied homes nationwide were built in 1980 or earlier as of 2024, and about 34 percent were built before 1970 (NAHB analysis of the 2024 American Community Survey, March 2026).
- Only about 13 percent of owner-occupied homes in 2024 were built in the prior 14 years, down from 18 percent in 2014, so the share of new roofs entering the stock is shrinking (NAHB analysis of the 2024 American Community Survey, March 2026).
- New York had the oldest owner-occupied housing stock in 2024 at a 64-year median age, followed by Massachusetts and Rhode Island at 59 years; Nevada was youngest at 25 years and Texas at 28 years (NAHB analysis of the 2024 American Community Survey, March 2026).
- About 4.4 percent of U.S. households reported a leaking roof in 2023, down from 7.6 percent in 1973 (U.S. Census Bureau and HUD, 2023 American Housing Survey).
- Homes built before 1940 had a 9 percent housing-inadequacy rate in 2023, versus 5 percent for homes built between 1960 and 1979 (NAHB analysis of the 2023 American Housing Survey, December 2025).
- A standard three-tab asphalt shingle roof has an estimated life expectancy of about 20 years, and an architectural asphalt shingle roof about 30 years (InterNACHI Standard Estimated Life Expectancy Chart for Homes).
- Replacement and reroofing, not new construction, accounted for an estimated 79.2 percent of U.S. roofing installations in 2025, consistent with an aging stock (Mordor Intelligence, United States Roofing Market, 2025).
Key Findings
- The United States housing stock totaled about 145.9 million units at the end of 2023 (U.S. Census Bureau, Housing Vacancy Survey, 2023).
- Owner-occupied housing units numbered about 82.9 million in the 2019-2023 American Community Survey, up 8.4 percent from 76.4 million in the 2014-2018 period (U.S. Census Bureau, American Community Survey).
- The median age of owner-occupied homes was 42 years in 2024 (NAHB analysis of the 2024 American Community Survey, March 2026).
- The share of owner-occupied homes at least 45 years old rose to 47 percent in 2024 from 39 percent in 2014 (NAHB analysis of the 2024 American Community Survey, March 2026).
- About 47 percent of owner-occupied homes were built in 1980 or earlier in 2024 (NAHB analysis of the 2024 American Community Survey, March 2026).
- Roughly 34 percent of owner-occupied homes were built before 1970 as of 2024 (NAHB analysis of the 2024 American Community Survey, March 2026).
- Owner-occupied homes built from 2020 to 2024 made up about 4 percent of the stock, and homes built from 2010 to 2019 about 9 percent (NAHB analysis of the 2024 American Community Survey, March 2026).
- New York had the oldest owner-occupied housing at a 64-year median age in 2024 (NAHB analysis of the 2024 American Community Survey, March 2026).
- Nevada had the youngest owner-occupied housing at a 25-year median age in 2024 (NAHB analysis of the 2024 American Community Survey, March 2026).
- About 4.4 percent of U.S. households reported a leaking roof in 2023, equivalent to roughly 6 million homes (U.S. Census Bureau and HUD, 2023 American Housing Survey; Instant Roofer analysis reported by Roofing Contractor, 2024).
- Missing roofing material affected about 3.5 million households, sagging roofs about 1.9 million, and roof holes about 1.5 million in 2023 (Instant Roofer analysis of the 2023 American Housing Survey, reported by Roofing Contractor, 2024).
- About 6.45 million homes, or roughly 5 percent of occupied housing, were classified as physically inadequate in 2023, of which 1.65 million were severely inadequate (NAHB analysis of the 2023 American Housing Survey, December 2025).
- A three-tab asphalt shingle roof has an estimated 20-year life expectancy and an architectural asphalt shingle roof about 30 years, while slate and clay or concrete tile exceed 50 to 100 years (InterNACHI Standard Estimated Life Expectancy Chart for Homes).
- Replacement work accounted for an estimated 79.2 percent of U.S. roofing installations in 2025 (Mordor Intelligence, United States Roofing Market, 2025).
How Old Is the U.S. Housing Stock
The federal benchmark for housing age is the American Community Survey question on year structure built, summarized in table B25034 and profile DP04. The National Association of Home Builders publishes an annual analysis of these data, and its March 2026 release using the 2024 American Community Survey is the most recent national read. The median age of owner-occupied homes was 42 years in 2024. That figure rose from 31 years in 2005 and 40 years in the 2022 American Community Survey, a steady upward drift driven by low new-construction volume relative to the size of the existing stock.
| Year structure built | Approx. share of owner-occupied homes, 2024 |
|---|---|
| Built 2020 to 2024 | ~4% |
| Built 2010 to 2019 | ~9% |
| Built 2000 to 2009 | ~15% |
| Built 1980 to 1999 | ~25% (derived: 100% minus the other rows) |
| Built before 1980 | ~47% |
| Of which built before 1970 | ~34% |
Source: NAHB analysis of the 2024 American Community Survey, March 2026. Shares are reported by NAHB to the nearest whole percent and do not sum exactly to 100 because of rounding; the 1980-to-1999 row is derived here by subtraction and is therefore an approximation. The Census Bureau did not field a standard one-year American Community Survey for 2020 because of COVID-19 disruption, so the 2020 single-year point is excluded from the NAHB series.
The direction of travel matters more than any single year. The share of owner-occupied homes at least 45 years old climbed to 47 percent in 2024 from 39 percent in 2014, while the share built within the prior 14 years fell to 13 percent from 18 percent over the same decade (NAHB analysis of the 2024 American Community Survey, March 2026). A 45-year-old home built with asphalt shingles has, on a typical 20-to-30-year shingle clock, already passed through one or two roof replacements, and a growing pool of homes sits in that high-reroof window.
States With the Oldest Housing Stock
Housing age varies sharply by state because it tracks the timing of each state’s population growth. Slow-growth states in the Northeast and parts of the Midwest hold the oldest stock, while fast-growing Sun Belt states hold the newest. The figures below are state median ages of owner-occupied homes from the NAHB analysis of the 2024 American Community Survey.
| Rank | State | Median age of owner-occupied homes, 2024 | Group |
|---|---|---|---|
| 1 | New York | 64 years | Oldest |
| 2 (tie) | Massachusetts | 59 years | Oldest |
| 2 (tie) | Rhode Island | 59 years | Oldest |
| – | District of Columbia | ~80+ years (half of homes built more than 80 years ago) | Oldest (federal district) |
| Youngest | Nevada | 25 years | Youngest |
| Youngest | Texas | 28 years | Youngest |
| Youngest (tie) | South Carolina, Georgia, Arizona | ~29 years | Youngest |
Source: NAHB analysis of the 2024 American Community Survey, March 2026. NAHB reports that 14 of 15 Sun Belt states fall below the 42-year national median, while slow-growth states such as Pennsylvania, Vermont, and New York sit well above it. NAHB published specific median ages only for the states named above, so a full 50-state ranking cannot be reproduced from the public release; the values shown are the named extremes, not an exhaustive list.
Roof Condition: What Households Report
The American Housing Survey, fielded jointly by the Census Bureau and HUD, asks households directly about roof problems. The 2023 American Housing Survey is the most recent. About 4.4 percent of U.S. households reported a leaking roof in 2023, down from 7.6 percent in 1973, a long-run improvement that tracks rising housing quality even as the stock ages. Self-reported roof defects in 2023 break out as follows.
| Reported roof problem | Approx. U.S. households, 2023 | Source |
|---|---|---|
| Leaking roof | ~6.0 million (4.4% of households) | 2023 American Housing Survey; Instant Roofer analysis via Roofing Contractor, 2024 |
| Missing roofing material | ~3.5 million | Instant Roofer analysis of 2023 AHS via Roofing Contractor, 2024 |
| Sagging roof | ~1.9 million | Instant Roofer analysis of 2023 AHS via Roofing Contractor, 2024 |
| Holes in roof | ~1.5 million | Instant Roofer analysis of 2023 AHS via Roofing Contractor, 2024 |
Roof problems concentrate by metro. In the 2023 American Housing Survey, Riverside, California, had the highest reported roof-leak prevalence at 6.6 percent of households, followed by Los Angeles at 6.0 percent and San Francisco at 5.7 percent (Instant Roofer analysis via Roofing Contractor, 2024). On a composite score combining leaks, missing material, holes, and sagging, Detroit, Philadelphia, and Los Angeles ranked worst. The Roofing Contractor figures restate an Instant Roofer analysis of Census microdata rather than a Census-published table, so they are classified here as a Tier 2 derivation of Tier 1 data and should be cited as such.
Roof condition also tracks age. In the 2023 American Housing Survey, homes built before 1940 had a 9 percent overall housing-inadequacy rate, homes built 1940 to 1959 a 7 percent rate, and homes built 1960 to 1979 a 5 percent rate (NAHB analysis of the 2023 American Housing Survey, December 2025). Water leaks, large open cracks, and holes are among the conditions that classify a home as severely inadequate, so the age gradient in inadequacy is partly a roof-and-envelope gradient.
Roofing Material Mix and Life Expectancy
The single most important caveat in this report concerns roofing material on new homes. The Census Bureau’s Survey of Construction and its Characteristics of New Housing program historically published the principal type of roofing material on new single-family houses, but the Census Bureau discontinued collection of the roofing-material characteristic, so there is no current federal table giving the asphalt-shingle share of new single-family homes by region. Any current national figure for asphalt-shingle share, commonly cited at roughly 75 to 80 percent of residential roofs, comes from trade and market-research sources rather than a live federal table, and this briefing does not present such a figure as a federal statistic.
What can be stated with confidence is material life expectancy, which sets the replacement clock. The InterNACHI Standard Estimated Life Expectancy Chart for Homes gives the following estimates, intended as planning assumptions under normal wear, not guarantees.
| Roofing material | Estimated life expectancy (years) |
|---|---|
| Asphalt shingles, three-tab | 20 |
| Asphalt shingles, architectural | 30 |
| Wood | 30 |
| Fiber cement | 25 |
| Modified bitumen | 20 |
| Built-up roof (BUR) | 30 |
| EPDM rubber | 15 to 25 |
| TPO | 7 to 20 |
| Metal | 40 to 50 |
| Simulated slate | 50 |
| Slate | 50+ |
| Clay or concrete tile | 100+ |
| Copper | 100+ |
Source: InterNACHI Standard Estimated Life Expectancy Chart for Homes. InterNACHI states that these expectancies assume recommended maintenance and normal wear, and that local weather, design, material quality, and maintenance change real-world lifespan. These are clearly-labeled assumptions, not measured outcomes, and they are used below only to derive a roof-age proxy.
Roofing Demand Context
Replacement, not new construction, drives U.S. roofing volume, and an aging stock is why. Market-research estimates put replacement and reroofing at about 79.2 percent of U.S. roofing installations in 2025 (Mordor Intelligence, United States Roofing Market, 2025). That share is consistent with the federal age data: with a 42-year median home age in 2024 and a roughly 20-to-30-year asphalt-shingle life, the typical owner-occupied home has reached an age at which one full roof replacement is already behind it and the next is in view. New-construction roofs, by contrast, are added slowly, since homes built in the prior 14 years made up only about 13 percent of owner-occupied stock in 2024 (NAHB analysis of the 2024 American Community Survey). The market-research replacement share is a Tier 2 estimate and is reported here as an estimate, not a federal count.
Original Synthesis
The three analyses below are built only from the verified public datasets cited above. Each states its formula, inputs, and limits. They are estimates and proxies, not measured roof counts.
1. Roof Replacement Demand Index (state-level)
Logic: roof-replacement pressure rises with the age of the housing stock, because older homes have older roofs that have cycled through more replacements and sit deeper into the asphalt-shingle life window. As a transparent proxy, this index uses the state median age of owner-occupied homes from the 2024 American Community Survey (NAHB analysis) and scores each state relative to the 42-year national median.
Formula: Demand Index = state median home age (years) divided by 42 (national median), then multiplied by 100. A value above 100 signals above-average replacement pressure.
| State | Median home age, 2024 (yrs) | Demand Index (national = 100) | Read |
|---|---|---|---|
| New York | 64 | 152 | Highest reroof pressure of named states |
| Massachusetts | 59 | 140 | Well above national |
| Rhode Island | 59 | 140 | Well above national |
| United States | 42 | 100 | Baseline |
| South Carolina / Georgia / Arizona | ~29 | ~69 | Below national; newer roofs |
| Texas | 28 | 67 | Low reroof pressure, but large absolute stock |
| Nevada | 25 | 60 | Lowest reroof pressure of named states |
Inputs: state and national median age of owner-occupied homes, NAHB analysis of the 2024 American Community Survey. Limits: median age is a coarse proxy for roof age because roofs are replaced on a schedule independent of the original build year, so a 64-year-old New York home likely has a much younger roof. The index ranks relative pressure, not absolute roof count, and a high-growth state such as Texas can have low index but high total demand because of its large and growing housing base. NAHB published specific medians only for the states shown, so the index is presented for named states only.
2. High-Reroof-Window Share (national)
Logic: homes built long enough ago that their original asphalt roof has certainly aged out, yet recently enough that they remain owner-occupied and maintained, are the core reroofing market. Using the InterNACHI asphalt life expectancy of 20 to 30 years as a clearly-labeled assumption, homes built before about 1995 have all passed at least one full asphalt-shingle life as of 2024.
Formula: share of owner-occupied homes built before 1980 (about 47 percent, the nearest published threshold) plus the 1980-to-1994 cohort. Using the published pre-1980 share of about 47 percent as a conservative floor, at least 47 percent of owner-occupied homes in 2024 are at least 44 years old and have cycled through one to two asphalt roofs on a 20-to-30-year clock.
Inputs: pre-1980 share (about 47 percent) and median age (42 years), NAHB analysis of the 2024 American Community Survey; asphalt-shingle life expectancy of 20 to 30 years, InterNACHI chart. Limits: the lifespan figures are assumptions, not observed roof ages; actual roofs may have been replaced once, twice, or not at all. The 47 percent floor understates the true high-reroof share because it omits the 1980-to-1994 cohort, which is not separately published in the release used here.
3. Age-Adjusted Roof-Defect Gradient
Logic: older homes report more roof and envelope defects, so combining the AHS inadequacy-by-age data with the year-built distribution shows where defect-driven replacement clusters. In the 2023 American Housing Survey, inadequacy ran 9 percent for pre-1940 homes, 7 percent for 1940-to-1959 homes, and 5 percent for 1960-to-1979 homes, versus a roughly 5 percent national average.
Derived insight: pre-1940 homes carried an inadequacy rate about 1.8 times the national average in 2023 (9 percent divided by about 5 percent), while post-1980 construction sat below average. Because pre-1980 homes are about 47 percent of owner-occupied stock, the older near-half of the stock carries a disproportionate share of roof-and-envelope defects, concentrating non-discretionary replacement demand in the oldest cohort and in the oldest states identified in synthesis 1.
Inputs: inadequacy rates by year built and the roughly 5 percent national inadequacy rate, NAHB analysis of the 2023 American Housing Survey; year-built shares, NAHB analysis of the 2024 American Community Survey. Limits: housing inadequacy is broader than roof condition, so this gradient overstates roof-specific defects; it is directional, not a roof-only measure. The two NAHB analyses use different survey years (AHS 2023 and ACS 2024), so the combination is approximate.
Charts We Recommend
- Title: “The U.S. Roof Is Getting Older.” Data: median age of owner-occupied homes, 2005 to 2024. Source: NAHB analysis of the American Community Survey. Insight: the median rose from 31 to 42 years in under two decades. Why citable: a single clean time series that anchors the aging-stock thesis.
- Title: “Where the Oldest Roofs Are.” Data: state median home age, 2024, choropleth. Source: NAHB analysis of the 2024 American Community Survey. Insight: Northeast oldest, Sun Belt newest. Why citable: maps replacement pressure to geography for local reporting.
- Title: “Roof Problems by Build Decade.” Data: AHS inadequacy rate by year structure built, 2023. Source: NAHB analysis of the 2023 American Housing Survey. Insight: pre-1940 homes fail at nearly double the national rate. Why citable: ties physical defects to housing age.
- Title: “How Long Roofs Last.” Data: InterNACHI life expectancy by material. Source: InterNACHI chart. Insight: asphalt 20 to 30 years versus tile and slate 50 to 100-plus. Why citable: gives readers the replacement clock in one view.
- Title: “Replacement Dominates Roofing Demand.” Data: replacement versus new-construction share of installations, 2025. Source: Mordor Intelligence. Insight: about four in five installations are replacements. Why citable: frames the market as renovation-led.
Methodology
Source selection prioritized primary federal datasets: the American Community Survey for housing age, the American Housing Survey for roof condition, and the Census Bureau Housing Vacancy Survey for total unit counts. Where the Census Bureau’s data tool and public API were not directly retrievable in this environment, figures were taken from the National Association of Home Builders’ Eye on Housing analyses, which restate and cite the underlying Census tables (American Community Survey B25034 and DP04; American Housing Survey). Those NAHB analyses are treated as a credible secondary layer over Tier 1 federal data and are labeled as such throughout.
Inclusion required a named source, a data year, and a national or state geography. Conflicting numbers were resolved toward the most recent federal vintage: the 2024 American Community Survey for housing age (released and analyzed March 2026) and the 2023 American Housing Survey for roof condition. The 2022 American Community Survey 40-year median is reported only as a prior-year comparison. Roofing-material share on new homes was excluded as a federal statistic because the Census Bureau discontinued collecting the principal-roofing-material characteristic, and no live federal table could be confirmed. Material life expectancies are presented as clearly-labeled planning assumptions from InterNACHI, used only to derive roof-age proxies. The replacement-share figure is a market-research estimate, not a federal count. Derived index values in the Original Synthesis are arithmetic transformations of the cited inputs and are estimates, not measured roof counts. Last updated: June 29, 2026.
Source Quality and Tiering
Tier 1 (primary government data): U.S. Census Bureau, American Community Survey (year structure built, B25034 and DP04). U.S. Census Bureau and HUD, American Housing Survey 2023 (roof condition, housing inadequacy). U.S. Census Bureau, Housing Vacancy Survey 2023 (total housing units).
Tier 2 (credible research bodies and market research): National Association of Home Builders, Eye on Housing (analysis restating Census tables). InterNACHI Standard Estimated Life Expectancy Chart for Homes (material lifespan reference). Mordor Intelligence, United States Roofing Market 2025 (replacement-share estimate). Instant Roofer analysis of 2023 AHS microdata.
Tier 3 (reputable trade journalism): Roofing Contractor (reporting the Instant Roofer AHS analysis).
Most Quotable Statistics
- The median U.S. owner-occupied home was 42 years old in 2024, up from 31 in 2005 (NAHB analysis of the 2024 American Community Survey).
- About 47 percent of owner-occupied homes were built in 1980 or earlier as of 2024 (NAHB analysis of the 2024 American Community Survey).
- New York had the oldest owner-occupied housing in 2024 at a 64-year median age (NAHB analysis of the 2024 American Community Survey).
- About 4.4 percent of U.S. households reported a leaking roof in 2023, down from 7.6 percent in 1973 (2023 American Housing Survey).
- Pre-1940 homes had a 9 percent housing-inadequacy rate in 2023 versus 5 percent for 1960s-and-1970s homes (NAHB analysis of the 2023 American Housing Survey).
- A three-tab asphalt shingle roof has an estimated 20-year life expectancy (InterNACHI chart).
- Replacement work made up an estimated 79.2 percent of U.S. roofing installations in 2025 (Mordor Intelligence, 2025).
Data Limitations
- The Census Bureau discontinued collecting principal roofing material on new homes, so no current federal roofing-material mix by region exists; market-research shares are not federal statistics.
- Median home age is a proxy for roof age, not a measure of it, because roofs are replaced on a schedule independent of the original build year.
- NAHB published state median ages only for the named extremes, so a complete 50-state ranking cannot be reproduced from the public release used here.
- The Census Bureau did not field a standard 2020 one-year American Community Survey, leaving a gap in the year series.
- Roof-defect metro figures restate an Instant Roofer analysis of AHS microdata, not a Census-published table.
- Material life expectancies are planning assumptions under normal wear, not guarantees, and vary with climate and maintenance.
- The 79.2 percent replacement share is a market-research estimate and should be cited as an estimate.
Recommended Downloadable Dataset Fields
- geography_name (US, state, or metro)
- geography_level
- data_year
- source_survey (ACS, AHS, HVS)
- total_housing_units
- owner_occupied_units
- median_age_owner_occupied_years
- share_built_pre_1980
- share_built_2010_or_later
- roof_leak_household_share
- inadequacy_rate_by_build_decade
- assumed_asphalt_life_years_low_high
- roof_replacement_demand_index
- source_url
- source_tier
Press Summary
The U.S. housing stock is the oldest on record, and its roofs are aging with it. The median owner-occupied home reached 42 years of age in 2024, up from 31 in 2005, and about 47 percent of owner-occupied homes were built in 1980 or earlier, according to the National Association of Home Builders’ analysis of the 2024 American Community Survey. With standard asphalt shingle roofs rated for 20 to 30 years by InterNACHI, most U.S. homes have already cycled through at least one roof and a growing share sit in the high-reroof window. Roof problems remain common but have eased over time: about 4.4 percent of households reported a leaking roof in 2023, down from 7.6 percent in 1973, per the American Housing Survey, with leaks concentrated in California metros such as Riverside, Los Angeles, and San Francisco. New York holds the oldest housing stock at a 64-year median, while Nevada and Texas hold the newest. Replacement work, not new construction, drives roofing demand, an estimated 79.2 percent of 2025 installations.
Five Headlines Journalists Can Use
- The Median American Home Is Now 42 Years Old, and So Are Its Roofs
- Nearly Half of U.S. Owner-Occupied Homes Were Built Before 1980
- New York Has the Oldest Housing Stock in America at a 64-Year Median
- Roof Leaks Hit 4.4 Percent of U.S. Households in 2023, Down From 7.6 Percent in 1973
- Why Four in Five Roofing Jobs Are Replacements, Not New Builds
Frequently Asked Questions
How old is the average U.S. home?
The median age of owner-occupied homes was 42 years in 2024 (NAHB analysis of the 2024 American Community Survey).
What share of U.S. homes were built before 1980?
About 47 percent of owner-occupied homes were built in 1980 or earlier as of 2024 (NAHB analysis of the 2024 American Community Survey).
Which state has the oldest housing stock?
New York, with a 64-year median age of owner-occupied homes in 2024, followed by Massachusetts and Rhode Island at 59 years (NAHB analysis of the 2024 American Community Survey).
Which state has the newest housing stock?
Nevada, at a 25-year median age in 2024, followed by Texas at 28 years (NAHB analysis of the 2024 American Community Survey).
How many U.S. households have a leaking roof?
About 4.4 percent of households, roughly 6 million homes, reported a leaking roof in 2023 (2023 American Housing Survey).
Are roof leaks more or less common than in the past?
Less common; the share of households reporting a leaking roof fell from 7.6 percent in 1973 to 4.4 percent in 2023 (2023 American Housing Survey).
Do older homes have worse roofs?
Older homes show higher overall inadequacy: 9 percent for pre-1940 homes versus 5 percent for 1960s-and-1970s homes in 2023 (NAHB analysis of the 2023 American Housing Survey).
How long does an asphalt shingle roof last?
About 20 years for three-tab shingles and 30 years for architectural shingles, as planning estimates (InterNACHI Standard Estimated Life Expectancy Chart).
What roofing material covers most U.S. homes?
Asphalt shingles are the dominant residential roofing material, but the Census Bureau discontinued collecting principal roofing material on new homes, so the precise national share is no longer a federal statistic and current shares come from trade and market-research sources.
How big is the replacement roofing market relative to new construction?
Replacement and reroofing accounted for an estimated 79.2 percent of U.S. roofing installations in 2025 (Mordor Intelligence, United States Roofing Market, 2025).
Cite This Research
The Roofing Brief, “US Housing Stock Roof Age and Material Report: How Old America’s Roofs Are in 2026,” 2026, https://theroofingbrief.com/us-housing-stock-roof-age-material-report/.
Embed or use this with credit: data compiled by The Roofing Brief from the U.S. Census Bureau (American Community Survey, American Housing Survey, Housing Vacancy Survey), NAHB Eye on Housing, and InterNACHI; please link to theroofingbrief.com.
Sources
- National Association of Home Builders (NAHB), Eye on Housing, “Age of Housing Stock by State,” March 2026 (analysis of the 2024 American Community Survey). https://eyeonhousing.org/2026/03/age-of-housing-stock-by-state/
- National Association of Home Builders (NAHB), Eye on Housing, “Almost Half of the Owner-Occupied Homes Built Before 1980,” March 2026 (analysis of the 2024 American Community Survey). https://eyeonhousing.org/2026/03/almost-half-of-the-owner-occupied-homes-built-before-1980-2/
- National Association of Home Builders (NAHB), “How Old is Today’s Housing Stock?” March 2026 (analysis of the 2024 American Community Survey). https://www.nahb.org/blog/2026/03/how-old-is-todays-housing-stock
- National Association of Home Builders (NAHB), Eye on Housing, “The Age of the U.S. Housing Stock,” February 2024 (analysis of the 2022 American Community Survey). https://eyeonhousing.org/2024/02/the-age-of-the-u-s-housing-stock/
- U.S. Census Bureau, American Community Survey (year structure built, tables B25034 and DP04). https://www.census.gov/programs-surveys/acs.html
- U.S. Census Bureau and U.S. Department of Housing and Urban Development, American Housing Survey for the United States: 2023. https://www.census.gov/programs-surveys/ahs.html
- National Association of Home Builders (NAHB), Eye on Housing, “Inadequate Shelter: Millions of U.S. Homes Fail to Meet Standards,” December 2025 (analysis of the 2023 American Housing Survey). https://eyeonhousing.org/2025/12/top-post-inadequate-shelter-millions-of-u-s-homes-fail-to-meet-standards/
- Roofing Contractor, “Worst Roofs in America: Data on Leaks, Holes and Sagging,” 2024 (reporting an Instant Roofer analysis of the 2023 American Housing Survey). https://www.roofingcontractor.com/articles/100645-worst-roofs-in-america-data-on-leaks-holes-and-sagging
- InterNACHI, Standard Estimated Life Expectancy Chart for Homes. https://www.nachi.org/life-expectancy.htm
- Mordor Intelligence, United States Roofing Market Size and Share Outlook, 2025. https://www.mordorintelligence.com/industry-reports/united-states-roofing-market
- U.S. Census Bureau, Survey of Construction and Characteristics of New Housing (note: principal roofing material characteristic discontinued). https://www.census.gov/construction/chars/
- U.S. Census Bureau, Housing Vacancy Survey, 2023 (total housing units). https://www.census.gov/housing/hvs/index.html