Attic insulation cost in Boston, MA
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (1,000 sq ft)
- $1,050 – $4,100
- Per sq ft
- $1.05 – $4.10
- before permit
- Versus US midpoint
- +2%
- US $2,500
- Rank of 300 metros
- #69
- 1 = most expensive
Local price for attic insulation in the Boston area: $1,050 to $4,100 for 1,000 sq ft. The low end is a basic job on easy ground; the high end is a premium spec with harder access. The midpoint lands close to the US figure. Insulation workers, floor, ceiling and wall earn a median of $23.53 an hour in the Boston area, 0% below the US median of $23.62.
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Estimated cost for 1,000 sq ft in Boston, MA, standard level
$1,950 to $3,150
About $1.95 to $3.15 per sq ft before permits. Labor is about 38% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $1,150 | $2,050 |
| Labor | $790 | $1,150 |
| Permits and fees | $0 | $0 |
| Total | $1,950 | $3,150 |
Cost breakdown for 1,000 sq ft in Boston, MA
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $500 | $1,600 | $2,700 | 62% |
| Labor | $530 | $960 | $1,400 | 38% |
| Permits and fees | $0 | $0 | $0 | 0% |
| Total | $1,050 | $2,550 | $4,100 | 100% |
What is behind the Boston number
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 $23.53 an hour. Add the other trades involved and the blended wage index for Boston is 1.07 (US = 1.00), which puts labor at 38% of the total. BLS does not publish this trade for the metro, so we used the Massachusetts statewide median.
Materials are scaled with BEA's regional price parity for goods. Boston is at 99.7 against 100 for the US, so a materials line of $1,600 nationally becomes $1,600 here (midpoint, 1,000 sq ft). Permits follow the all-items index of 108.3: $0 to $0.
Data note: 80% of the labor weighting for this project uses a statewide median because BLS has no published metro figure for that trade in Boston. The wage table below marks each row.
Is Boston cheap or dear? The local comparison
Same job, same size (1,000 sq ft), priced for the nearest metros. Boston is the priciest of the group. Portland is the cheapest at $2,450.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Boston, MAthis page | $1,050 – $4,100 | $2,550 | |
| Manchester, NH45 miles | $1,000 – $4,000 | $2,500 | −2% |
| Worcester, MA50 miles | $1,000 – $4,000 | $2,500 | −2% |
| Providence, RI60 miles | $1,000 – $4,000 | $2,500 | −2% |
| Barnstable, MA70 miles | $1,000 – $4,000 | $2,500 | −2% |
| Portland, ME85 miles | $980 – $3,900 | $2,450 | −4% |
| Massachusetts (statewide) | $1,050 – $4,050 | $2,550 | −1% |
| United States | $1,000 – $4,000 | $2,500 | −2% |
Out of the 300 metros we cover, Boston ranks #69 for the cost of this job (#1 is the most expensive). Statewide, Boston is 1% above the Massachusetts figure.
Elsewhere in Massachusetts
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Worcester, MA | 349,880 jobs | $1,000 – $4,000 | $2,500 | −2% |
| Springfield, MA | 201,240 jobs | $1,000 – $4,000 | $2,500 | −2% |
| Barnstable, MA | 94,110 jobs | $1,000 – $4,000 | $2,500 | −2% |
| Amherst, MA | 65,670 jobs | $1,000 – $4,000 | $2,500 | −2% |
| Pittsfield, MA | 56,810 jobs | $990 – $3,950 | $2,450 | −3% |
Metros of a similar size
Big cities and small ones price differently, so here is Boston against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Miami, FL | 2,819,940 jobs | $1,000 – $4,050 | $2,550 | −1% |
| Phoenix, AZ | 2,375,760 jobs | $920 – $3,700 | $2,300 | −9% |
| Atlanta, GA | 2,889,670 jobs | $1,050 – $4,100 | $2,550 | +1% |
| San Francisco, CA | 2,373,920 jobs | $1,300 – $4,950 | $3,150 | +23% |
Who does the work: Boston trade wages
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 Boston the blend is 1.07.
Insulation workers, floor, ceiling and wall (47-2131) carry 80% of the labor weighting. BLS does not publish this trade for the Boston metro, so we used the Massachusetts statewide median: $23.53 an hour against $23.62 for the US. The middle half of them earn between $22.83 and $27.87 an hour.
For construction laborers (47-2061, weighted 20%) the local median is $30.49 an hour, which is 35% above the national $22.66. The middle half of them earn between $26.22 and $45.11 an hour. BLS counts 11,580 of them working in the area, 42.8 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 $130 to the midpoint estimate; the 25th percentile takes off about $20. That is a swing of roughly 0.8% to 5.2% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Boston-Cambridge-Newton has 2,703,890 jobs in total (BLS, May 2025), ranking 10th 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% | $22.83 | $23.53 | $27.87 | $23.62 | 1.00 | state |
| Construction laborers (47-2061) | 20% | $26.22 | $30.49 | $45.11 | $22.66 | 1.35 | metro |
| Blended | 100% | 1.07 | |||||
Planning more than one job in Boston?
Jobs that often go together with attic insulation are priced below at their usual sizes, using the same Boston wage and price inputs. Compared with national midpoints, window replacement comes out highest (+15%) and gutters lowest (+11%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Roof replacement | 2,000 sq ft of roof | $7,050 – $14,100 | +14% |
| Metal roof | 2,000 sq ft of roof | $12,100 – $36,300 | +13% |
| Vinyl siding | 2,100 sq ft of wall | $9,550 – $28,700 | +14% |
| Window replacement | 10 windows | $5,350 – $17,100 | +15% |
| Gutters | 160 linear ft | $1,450 – $4,650 | +11% |
Cost by quality level and size in Boston
The cited range is split into basic, standard and premium bands, then scaled to Boston. 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
$1,050 to $2,250
Blown-in fiberglass or cellulose to code R-value
Standard
$1,950 to $3,150
Higher R-value with air sealing around fixtures
Premium
$2,850 to $4,100
Spray foam or heavy air sealing, hard-to-reach attic
| Size | Basic | Standard | Premium |
|---|---|---|---|
| small attic (600 sq ft) | $620 – $1,350 | $1,150 – $1,900 | $1,700 – $2,450 |
| average attic (1,000 sq ft) | $1,050 – $2,250 | $1,950 – $3,150 | $2,850 – $4,100 |
| large attic (1,800 sq ft) | $1,850 – $4,050 | $3,500 – $5,700 | $5,150 – $7,350 |
Attic insulation: what moves the price in Boston
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.
Get 3 local quotes
Tell us about the job and we will try to connect you with up to three local contractors for written quotes. It is free and you are under no obligation to hire. Your estimate of $1,950 to $3,150 for Boston, MA is attached.
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Attic insulation in Boston: your questions
+How much does it cost to insulate an attic in Boston?
For 1,000 sq ft, expect $1,050 to $4,100 in the Boston area. A standard-spec job lands at $1,950 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 Boston?
About $1.05 to $4.10 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 Boston or Manchester?
Manchester is 45 miles away. The midpoint for 1,000 sq ft there is $2,500, which is 2% less than Boston ($2,550). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Boston?
About 38% at the midpoint, or $960 out of $2,550. Materials are 62% and permits 0%. Nationally, labor is 36%.
+What would average attic (1,000 sq ft) cost in Boston?
$1,050 to $4,100. Pick a different size in the estimator above to get your own number.
+Does attic insulation need a permit in Boston?
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 Boston area (our national range of $0 to $0 scaled by the local price level).
+Is Boston expensive for attic insulation compared with the rest of Massachusetts?
Boston is 1% above the Massachusetts statewide estimate ($2,550 at the midpoint). We cover 6 metros in Massachusetts; see the state page to compare them.
+What do insulation workers, floor, ceiling and wall earn in Boston?
BLS has no published metro figure here, so we use the statewide median of $23.53 an hour, compared with $23.62 nationally. The 25th to 75th percentile range is $22.83 to $27.87.
+What do basic and premium attic insulation work cost in Boston?
For 1,000 sq ft, basic work runs $1,050 to $2,250 and premium work $2,850 to $4,100. 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 Boston
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.