Attic insulation cost in Idaho
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (1,000 sq ft)
- $920 – $3,750
- Per sq ft
- $0.90 – $3.75
- before permit
- Versus US midpoint
- −7%
- US $2,500
- Metros covered
- 3
Idaho prices for attic insulation: $920 to $3,750 for 1,000 sq ft, or $0.90 to $3.75 per sq ft without the permit. The state midpoint is 7% below the national one. Local wages for insulation workers, floor, ceiling and wall are $19.98 an hour.
Inside Idaho, the metros we cover range from $2,300 (Idaho Falls) to $2,350 (Coeur d'Alene) at the midpoint. Pick your closest city in the table for a tighter number.
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Estimated cost for 1,000 sq ft in Idaho (statewide), standard level
$1,750 to $2,900
About $1.75 to $2.90 per sq ft before permits. Labor is about 34% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $1,100 | $1,950 |
| Labor | $650 | $930 |
| Permits and fees | $0 | $0 |
| Total | $1,750 | $2,900 |
Cost breakdown for 1,000 sq ft in Idaho
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $480 | $1,550 | $2,600 | 66% |
| Labor | $440 | $790 | $1,150 | 34% |
| Permits and fees | $0 | $0 | $0 | 0% |
| Total | $920 | $2,350 | $3,750 | 100% |
Attic insulation: what moves the price in Idaho
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.
Removing old insulation
Old, wet or pest-damaged insulation has to come out first, at extra cost.
Idaho versus the states around it
Idaho ranks 47 of 51 (the 50 states plus DC) for attic insulation, where 1 is the most expensive. The costliest is Washington at $2,900 and the cheapest West Virginia at $2,250, both for 1,000 sq ft at the midpoint. Idaho sits at $2,350. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Montana | 270 miles away | $980 – $3,900 | $2,450 | +4% |
| Utah | 280 miles away | $910 – $3,700 | $2,300 | −1% |
| Oregon | 350 miles away | $1,100 – $4,400 | $2,750 | +19% |
| Washington | 380 miles away | $1,200 – $4,550 | $2,900 | +24% |
| Nevada | 460 miles away | $960 – $3,850 | $2,400 | +3% |
Quality levels and sizes in Idaho
The cited range is cut into three overlapping bands (basic, standard and premium) and scaled to statewide Idaho wages and prices. The grid prices the same bands at 3 common sizes.
Basic
$920 to $2,050
Blown-in fiberglass or cellulose to code R-value
Standard
$1,750 to $2,900
Higher R-value with air sealing around fixtures
Premium
$2,600 to $3,750
Spray foam or heavy air sealing, hard-to-reach attic
| Size | Basic | Standard | Premium |
|---|---|---|---|
| small attic (600 sq ft) | $550 – $1,250 | $1,050 – $1,750 | $1,550 – $2,250 |
| average attic (1,000 sq ft) | $920 – $2,050 | $1,750 – $2,900 | $2,600 – $3,750 |
| large attic (1,800 sq ft) | $1,650 – $3,700 | $3,200 – $5,200 | $4,700 – $6,750 |
Attic insulation cost by metro in Idaho
1 of the 3 metros sit above the statewide midpoint of $2,350, and the top-to-bottom gap is 1%. Each row prices the default size with that metro's own BLS wages and BEA price levels, so the gap between rows is real local variation rather than a flat markup.
| Metro | Range (1,000 sq ft) | Midpoint | vs. state |
|---|---|---|---|
| Coeur d'Alene, ID | $930 – $3,750 | $2,350 | +1% |
| Boise, ID | $920 – $3,750 | $2,350 | level |
| Idaho Falls, ID | $920 – $3,750 | $2,300 | level |
If you are planning more than one job in Idaho
The table prices neighboring jobs at their usual sizes using statewide Idaho wages and prices. Against national midpoints, roof replacement comes out highest (+1%) and vinyl siding lowest (−7%), because each job leans on different trades.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Roof replacement | 2,000 sq ft of roof | $6,200 – $12,500 | +1% |
| Metal roof | 2,000 sq ft of roof | $9,900 – $31,600 | −3% |
| Vinyl siding | 2,100 sq ft of wall | $7,800 – $23,300 | −7% |
| Window replacement | 10 windows | $4,350 – $14,500 | −4% |
| Gutters | 160 linear ft | $1,200 – $3,950 | −6% |
What insulation workers, floor, ceiling and wall and the other trades earn in Idaho
Statewide wages come from BLS's state-level estimates, which blend big cities with small towns and rural areas. 2 trades drive the labor line for this job, and the weighted ratio against the national wage level is 0.88 for Idaho.
Insulation workers, floor, ceiling and wall (47-2131), 80% of the weighting: a median of $19.98 an hour, 15% below the US median of $23.62. The middle half of them earn between $17.19 and $24.39 an hour. About 330 work in the state. That is 3.8 per 10,000 jobs, compared with 2.9 nationally, which suggests plenty of local crews to bid.
Construction laborers (47-2061), 20% of the weighting: a median of $22.57 an hour, in line with the US median of $22.66. The middle half of them earn between $19.02 and $26.46 an hour. About 10,850 work in the state. That is 126.5 per 10,000 jobs, compared with 70.5 nationally, which suggests plenty of local crews to bid.
A crew paid at the 75th percentile for insulation workers, floor, ceiling and wall ($24.39 an hour) would add about $130 to the statewide midpoint; one at the 25th percentile ($17.19) would take off about $85. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 857,440 jobs across Idaho (May 2025), which is 0.6% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Insulation workers, floor, ceiling and wall (47-2131) | 80% | $17.19 | $19.98 | $24.39 | $23.62 | 0.85 | state |
| Construction laborers (47-2061) | 20% | $19.02 | $22.57 | $26.46 | $22.66 | 1.00 | state |
| Blended | 100% | 0.88 | |||||
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Attic insulation in Idaho: your questions
+How much does it cost to insulate an attic in Idaho?
$920 to $3,750 for 1,000 sq ft, using statewide wages and prices. Metro areas inside Idaho can sit above or below that.
+Which city in Idaho is cheapest for attic insulation?
Idaho Falls at about $2,300 (midpoint, 1,000 sq ft). The priciest is Coeur d'Alene at $2,350.
+Is attic insulation cheaper in Idaho than the US average?
It is 7% cheaper: $2,350 against $2,500 for 1,000 sq ft at the midpoint.
+What share of the price is labor in Idaho?
About 34% ($790). Materials are 66%. Statewide labor for this job is weighted 0.88x the national wage level.
+What do insulation workers, floor, ceiling and wall earn in Idaho?
The BLS statewide median is $19.98 an hour, against $23.62 for the US. The 25th to 75th percentile range is $17.19 to $24.39.
+Where does Idaho rank for attic insulation costs?
47th most expensive of 51 (the 50 states plus DC) at the midpoint, $2,350 for 1,000 sq ft. Rank 1 is the costliest.
+What do basic and premium attic insulation work cost in Idaho?
For 1,000 sq ft, basic work runs $920 to $2,050 and premium work $2,600 to $3,750. 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 by city in Idaho
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.