Attic insulation cost in San Francisco, CA
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (1,000 sq ft)
- $1,300 – $4,950
- Per sq ft
- $1.30 – $4.95
- before permit
- Versus US midpoint
- +25%
- US $2,500
- Rank of 300 metros
- #1
- 1 = most expensive
Attic insulation in San Francisco, CA usually costs $1,300 to $4,950 for 1,000 sq ft. That works out to about $1.30 to $4.95 per sq ft before permits. Compared with the national midpoint that is $630 more. Insulation workers, floor, ceiling and wall earn a median of $36.62 an hour in the San Francisco area, 55% above the US median of $23.62.
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Estimated cost for 1,000 sq ft in San Francisco, CA, standard level
$2,400 to $3,850
About $2.40 to $3.85 per sq ft before permits. Labor is about 45% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $1,250 | $2,200 |
| Labor | $1,150 | $1,650 |
| Permits and fees | $0 | $0 |
| Total | $2,400 | $3,850 |
Cost breakdown for 1,000 sq ft in San Francisco, CA
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $540 | $1,750 | $2,950 | 55% |
| Labor | $770 | $1,400 | $2,000 | 45% |
| Permits and fees | $0 | $0 | $0 | 0% |
| Total | $1,300 | $3,150 | $4,950 | 100% |
Why San Francisco prices look the way they do
Labor is 45% of the midpoint bill here, against 36% nationally. The mix of trades behind this job is insulation workers, floor, ceiling and wall (80%), construction laborers (20%). We weight each trade's local median wage by that share and compare it with the national median. In San Francisco the blended ratio comes out at 1.55.
Materials are scaled with BEA's regional price parity for goods. San Francisco is at 108.5 against 100 for the US, so a materials line of $1,600 nationally becomes $1,750 here (midpoint, 1,000 sq ft). Permits follow the all-items index of 115.6: $0 to $0.
Is San Francisco cheap or dear? The local comparison
Same job, same size (1,000 sq ft), priced for the nearest metros. San Francisco is the priciest of the group. Stockton is the cheapest at $2,600.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| San Francisco, CAthis page | $1,300 – $4,950 | $3,150 | |
| Vallejo, CA40 miles | $1,050 – $4,200 | $2,650 | −16% |
| Napa, CA50 miles | $1,050 – $4,200 | $2,650 | −16% |
| Santa Cruz, CA55 miles | $1,050 – $4,200 | $2,600 | −16% |
| Stockton, CA55 miles | $1,050 – $4,200 | $2,600 | −16% |
| Santa Rosa, CA65 miles | $1,050 – $4,200 | $2,650 | −16% |
| California (statewide) | $1,050 – $4,250 | $2,650 | −16% |
| United States | $1,000 – $4,000 | $2,500 | −20% |
Out of the 300 metros we cover, San Francisco ranks #1 for the cost of this job (#1 is the most expensive). Statewide, San Francisco is 18% above the California figure.
Elsewhere in California
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Los Angeles, CA | 6,271,560 jobs | $1,050 – $4,250 | $2,650 | −16% |
| Riverside, CA | 1,716,760 jobs | $1,000 – $4,050 | $2,550 | −19% |
| San Diego, CA | 1,538,060 jobs | $1,050 – $4,250 | $2,650 | −15% |
| San Jose, CA | 1,134,970 jobs | $1,150 – $4,450 | $2,800 | −10% |
| Sacramento, CA | 1,080,590 jobs | $1,050 – $4,200 | $2,600 | −16% |
| Fresno, CA | 476,890 jobs | $1,050 – $4,200 | $2,600 | −17% |
Metros of a similar size
Big cities and small ones price differently, so here is San Francisco against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Phoenix, AZ | 2,375,760 jobs | $920 – $3,700 | $2,300 | −26% |
| Seattle, WA | 2,086,210 jobs | $1,250 – $4,650 | $2,950 | −6% |
| Boston, MA | 2,703,890 jobs | $1,050 – $4,100 | $2,550 | −18% |
| Minneapolis, MN | 1,951,650 jobs | $1,100 – $4,350 | $2,750 | −12% |
Specs and site conditions that change a San Francisco bid
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.
Removing old insulation
Old, wet or pest-damaged insulation has to come out first, at extra cost.
What local crews earn in San Francisco
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 San Francisco the blend is 1.55.
For insulation workers, floor, ceiling and wall (47-2131, weighted 80%) the local median is $36.62 an hour, which is 55% above the national $23.62. The middle half of them earn between $26.41 and $57.65 an hour. BLS counts 370 of them working in the area, 1.6 for every 10,000 jobs (US: 2.9), so the local bench is thinner than average.
For construction laborers (47-2061, weighted 20%) the local median is $34.91 an hour, which is 54% above the national $22.66. The middle half of them earn between $28.03 and $40.50 an hour. BLS counts 11,620 of them working in the area, 48.9 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 $640 to the midpoint estimate; the 25th percentile takes off about $310. That is a swing of roughly 9.9% to 20.5% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
San Francisco-Oakland-Fremont has 2,373,920 jobs in total (BLS, May 2025), ranking 12th 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% | $26.41 | $36.62 | $57.65 | $23.62 | 1.55 | metro |
| Construction laborers (47-2061) | 20% | $28.03 | $34.91 | $40.50 | $22.66 | 1.54 | metro |
| Blended | 100% | 1.55 | |||||
Planning more than one job in San Francisco?
Jobs that often go together with attic insulation are priced below at their usual sizes, using the same San Francisco wage and price inputs. Compared with national midpoints, vinyl siding comes out highest (+30%) and window replacement lowest (+16%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Roof replacement | 2,000 sq ft of roof | $7,900 – $15,600 | +26% |
| Metal roof | 2,000 sq ft of roof | $13,700 – $40,700 | +28% |
| Vinyl siding | 2,100 sq ft of wall | $10,900 – $32,700 | +30% |
| Window replacement | 10 windows | $5,350 – $17,300 | +16% |
| Gutters | 160 linear ft | $1,650 – $5,200 | +26% |
San Francisco: what basic, standard and premium work costs
The cited range is split into basic, standard and premium bands, then scaled to San Francisco. 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
$1,300 to $2,750
Blown-in fiberglass or cellulose to code R-value
Standard
$2,400 to $3,850
Higher R-value with air sealing around fixtures
Premium
$3,500 to $4,950
Spray foam or heavy air sealing, hard-to-reach attic
| Size | Basic | Standard | Premium |
|---|---|---|---|
| small attic (600 sq ft) | $790 – $1,650 | $1,450 – $2,300 | $2,100 – $2,950 |
| average attic (1,000 sq ft) | $1,300 – $2,750 | $2,400 – $3,850 | $3,500 – $4,950 |
| large attic (1,800 sq ft) | $2,350 – $5,000 | $4,350 – $6,950 | $6,300 – $8,900 |
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Attic insulation in San Francisco: your questions
+How much does it cost to insulate an attic in San Francisco?
For 1,000 sq ft, expect $1,300 to $4,950 in the San Francisco area. A standard-spec job lands at $2,400 to $3,850. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for attic insulation in San Francisco?
About $1.30 to $4.95 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 San Francisco or Vallejo?
Vallejo is 40 miles away. The midpoint for 1,000 sq ft there is $2,650, which is 16% less than San Francisco ($3,150). Wage and materials indexes both feed that gap.
+How much of the bill is labor in San Francisco?
About 45% at the midpoint, or $1,400 out of $3,150. Materials are 55% and permits 0%. Nationally, labor is 36%.
+What would average attic (1,000 sq ft) cost in San Francisco?
$1,300 to $4,950. Pick a different size in the estimator above to get your own number.
+Does attic insulation need a permit in San Francisco?
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 San Francisco area (our national range of $0 to $0 scaled by the local price level).
+Is San Francisco expensive for attic insulation compared with the rest of California?
San Francisco is 18% above the California statewide estimate ($2,650 at the midpoint). We cover 23 metros in California; see the state page to compare them.
+What do insulation workers, floor, ceiling and wall earn in San Francisco?
The BLS median is $36.62 an hour in the San Francisco area, compared with $23.62 nationally. The 25th to 75th percentile range is $26.41 to $57.65.
+What do basic and premium attic insulation work cost in San Francisco?
For 1,000 sq ft, basic work runs $1,300 to $2,750 and premium work $3,500 to $4,950. 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 San Francisco
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.