Attic insulation cost in Washington, DC
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (1,000 sq ft)
- $1,000 – $4,050
- Per sq ft
- $1 – $4.05
- before permit
- Versus US midpoint
- +1%
- US $2,500
- Rank of 300 metros
- #87
- 1 = most expensive
Attic insulation in Washington, DC usually costs $1,000 to $4,050 for 1,000 sq ft. That works out to about $1 to $4.05 per sq ft before permits. That is within a few percent of the national midpoint, so there is little local premium or discount. Building materials run about 5% above the US average here (BEA goods price index 104.8).
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Estimated cost for 1,000 sq ft in Washington, DC, standard level
$1,900 to $3,150
About $1.90 to $3.15 per sq ft before permits. Labor is about 34% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $1,200 | $2,150 |
| Labor | $700 | $1,000 |
| Permits and fees | $0 | $0 |
| Total | $1,900 | $3,150 |
Cost breakdown for 1,000 sq ft in Washington, DC
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $520 | $1,700 | $2,850 | 66% |
| Labor | $470 | $850 | $1,250 | 34% |
| Permits and fees | $0 | $0 | $0 | 0% |
| Total | $1,000 | $2,550 | $4,050 | 100% |
Where the Washington price comes from
The wage side of the estimate leans on insulation workers, floor, ceiling and wall, who do 80% of the hours on a typical job. Their local median is $22.07 an hour. Add the other trades involved and the blended wage index for Washington is 0.95 (US = 1.00), which puts labor at 34% of the total.
Materials are scaled with BEA's regional price parity for goods. Washington is at 104.8 against 100 for the US, so a materials line of $1,600 nationally becomes $1,700 here (midpoint, 1,000 sq ft). Permits follow the all-items index of 108.9: $0 to $0.
What local crews earn in Washington
The labor line is built from BLS wage data, one trade at a time. This job draws on 2 trades. We compare each trade's local median with the US median, weight the ratios by how much of the job each trade does, and apply the blend to the national labor cost. For Washington the blend is 0.95.
For insulation workers, floor, ceiling and wall (47-2131, weighted 80%) the local median is $22.07 an hour, which is 7% below the national $23.62. The middle half of them earn between $21.35 and $29.55 an hour. BLS counts 1,330 of them working in the area, 4.2 for every 10,000 jobs (US: 2.9), so the local bench is deeper than average.
For construction laborers (47-2061, weighted 20%) the local median is $22.80 an hour, which is in line with the national $22.66. The middle half of them earn between $20.07 and $27.05 an hour. BLS counts 17,710 of them working in the area, 56.5 for every 10,000 jobs (US: 70.5), so the local bench is thinner than average.
A quick sensitivity check: moving the lead trade (insulation workers, floor, ceiling and wall) from the median to the 75th percentile wage adds about $230 to the midpoint estimate; the 25th percentile takes off about $20. That is a swing of roughly 0.9% to 9.0% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Washington-Arlington-Alexandria has 3,136,190 jobs in total (BLS, May 2025), ranking 6th by size among the 300 metros on this site.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Insulation workers, floor, ceiling and wall (47-2131) | 80% | $21.35 | $22.07 | $29.55 | $23.62 | 0.93 | metro |
| Construction laborers (47-2061) | 20% | $20.07 | $22.80 | $27.05 | $22.66 | 1.01 | metro |
| Blended | 100% | 0.95 | |||||
Related projects, priced for Washington
Jobs that often go together with attic insulation are priced below at their usual sizes, using the same Washington wage and price inputs. Compared with national midpoints, window replacement comes out highest (+5%) and vinyl siding lowest (+3%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Roof replacement | 2,000 sq ft of roof | $6,400 – $13,100 | +5% |
| Metal roof | 2,000 sq ft of roof | $10,500 – $33,900 | +4% |
| Vinyl siding | 2,100 sq ft of wall | $8,600 – $25,900 | +3% |
| Window replacement | 10 windows | $4,750 – $15,800 | +5% |
| Gutters | 160 linear ft | $1,300 – $4,350 | +4% |
Pick a size, pick a tier: attic insulation pricing in Washington
The cited range is split into basic, standard and premium bands, then scaled to Washington. Bands overlap, because plenty of standard jobs cost as much as a light premium one. Sizes run from small attic (600 sq ft) to large attic (1,800 sq ft).
Basic
$1,000 to $2,200
Blown-in fiberglass or cellulose to code R-value
Standard
$1,900 to $3,150
Higher R-value with air sealing around fixtures
Premium
$2,850 to $4,050
Spray foam or heavy air sealing, hard-to-reach attic
| Size | Basic | Standard | Premium |
|---|---|---|---|
| small attic (600 sq ft) | $600 – $1,350 | $1,150 – $1,900 | $1,700 – $2,450 |
| average attic (1,000 sq ft) | $1,000 – $2,200 | $1,900 – $3,150 | $2,850 – $4,050 |
| large attic (1,800 sq ft) | $1,800 – $4,000 | $3,450 – $5,650 | $5,100 – $7,300 |
Is Washington cheap or dear? The local comparison
Same job, same size (1,000 sq ft), priced for the nearest metros. Baltimore is the priciest of the group at $2,750. Winchester is the cheapest at $2,350.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Washington, DCthis page | $1,000 – $4,050 | $2,550 | |
| Hagerstown, MD55 miles | $1,050 – $4,050 | $2,550 | level |
| Baltimore, MD60 miles | $1,150 – $4,350 | $2,750 | +8% |
| Winchester, VA60 miles | $940 – $3,800 | $2,350 | −7% |
| Lexington Park, MD65 miles | $1,050 – $4,200 | $2,600 | +4% |
| Chambersburg, PA75 miles | $1,000 – $4,050 | $2,550 | level |
| District of Columbia (statewide) | $1,050 – $4,200 | $2,600 | +3% |
| United States | $1,000 – $4,000 | $2,500 | −1% |
Out of the 300 metros we cover, Washington ranks #87 for the cost of this job (#1 is the most expensive). Statewide, Washington is 3% below the District of Columbia figure.
Washington is the only District of Columbia metro we cover, so the statewide page is the only in-state comparison. It uses statewide wages, which include rural areas.
Metros of a similar size
Big cities and small ones price differently, so here is Washington against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Houston, TX | 3,289,720 jobs | $980 – $3,950 | $2,450 | −2% |
| Philadelphia, PA | 2,897,830 jobs | $1,000 – $4,000 | $2,500 | −1% |
| Dallas, TX | 4,049,800 jobs | $1,000 – $4,100 | $2,550 | +1% |
| Atlanta, GA | 2,889,670 jobs | $1,050 – $4,100 | $2,550 | +1% |
Why two Washington quotes can differ
Type of insulation
Blown-in is $0.90-$2.40 per sq ft and loose-fill is $1.00-$2.50 installed; spray foam costs more (HomeGuide).
Job size
Small attics start around $500 and large ones go up to $6,000 (HomeGuide).
Air sealing and fixture damming
Sealing gaps and damming around recessed lights are part of what moves the price within a type.
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Attic insulation in Washington: your questions
+How much does it cost to insulate an attic in Washington?
For 1,000 sq ft, expect $1,000 to $4,050 in the Washington area. A standard-spec job lands at $1,900 to $3,150. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for attic insulation in Washington?
About $1 to $4.05 per sq ft for materials and labor, plus $0 to $0 for the permit if one is needed. The US range is $1 to $4.
+Is attic insulation cheaper in Washington or Hagerstown?
Hagerstown is 55 miles away. The midpoint for 1,000 sq ft there is $2,550, which is 0% more than Washington ($2,550). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Washington?
About 34% at the midpoint, or $850 out of $2,550. Materials are 66% and permits 0%. Nationally, labor is 36%.
+What would average attic (1,000 sq ft) cost in Washington?
$1,000 to $4,050. Pick a different size in the estimator above to get your own number.
+Does attic insulation need a permit in Washington?
Often, but rules are set by your city or county building office, so call before you hire. Budget $0 to $0 for fees in the Washington area (our national range of $0 to $0 scaled by the local price level).
+Is Washington expensive for attic insulation compared with the rest of District of Columbia?
Washington is 3% below the District of Columbia statewide estimate ($2,600 at the midpoint).
+What do insulation workers, floor, ceiling and wall earn in Washington?
The BLS median is $22.07 an hour in the Washington area, compared with $23.62 nationally. The 25th to 75th percentile range is $21.35 to $29.55.
+What do basic and premium attic insulation work cost in Washington?
For 1,000 sq ft, basic work runs $1,000 to $2,200 and premium work $2,850 to $4,050. Basic means: blown-in fiberglass or cellulose to code R-value. Premium means: spray foam or heavy air sealing, hard-to-reach attic.
Attic insulation near Washington
Where these numbers come from
Base prices are national ranges from the sources below. We scale labor by local BLS wages, materials by BEA goods prices and permits by the BEA all-items price level. Full method on the methodology page.
- HomeGuide: How Much Does Attic Insulation Cost? (2026) (accessed November 4, 2026)
- BLS Occupational Employment and Wage Statistics, May 2025
- BEA Regional Price Parities, 2024
Note on derived figures: Materials = installed price minus HomeGuide's $0.50-$1.30 per sq ft insulation labor, matched low-to-low and high-to-high.