Attic insulation cost in Dover, DE
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (1,000 sq ft)
- $1,000 – $4,000
- Per sq ft
- $1 – $4
- before permit
- Versus US midpoint
- Level
- US $2,500
- Rank of 300 metros
- #106
- 1 = most expensive
Local price for attic insulation in the Dover area: $1,000 to $4,000 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 $25.75 an hour in the Dover area, 9% above the US median of $23.62.
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Estimated cost for 1,000 sq ft in Dover, DE, standard level
$1,900 to $3,100
About $1.90 to $3.10 per sq ft before permits. Labor is about 38% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $1,100 | $1,950 |
| Labor | $790 | $1,150 |
| Permits and fees | $0 | $0 |
| Total | $1,900 | $3,100 |
Cost breakdown for 1,000 sq ft in Dover, DE
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $480 | $1,550 | $2,600 | 62% |
| Labor | $530 | $960 | $1,400 | 38% |
| Permits and fees | $0 | $0 | $0 | 0% |
| Total | $1,000 | $2,500 | $4,000 | 100% |
Where the Dover 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 $25.75 an hour. Add the other trades involved and the blended wage index for Dover 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 Delaware statewide median.
Materials are scaled with BEA's regional price parity for goods. Dover is at 96.4 against 100 for the US, so a materials line of $1,600 nationally becomes $1,550 here (midpoint, 1,000 sq ft). Permits follow the all-items index of 97.5: $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 Dover. The wage table below marks each row.
Who does the work: Dover 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 Dover 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 Dover metro, so we used the Delaware statewide median: $25.75 an hour against $23.62 for the US. The middle half of them earn between $22.18 and $29.59 an hour.
For construction laborers (47-2061, weighted 20%) the local median is $22.02 an hour, which is in line with the national $22.66. The middle half of them earn between $18.50 and $24.63 an hour. BLS counts 400 of them working in the area, 58.8 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 $120 to the midpoint estimate; the 25th percentile takes off about $110. That is a swing of roughly 4.3% to 4.7% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Dover has 68,080 jobs in total (BLS, May 2025), ranking 265th 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% | $22.18 | $25.75 | $29.59 | $23.62 | 1.09 | state |
| Construction laborers (47-2061) | 20% | $18.50 | $22.02 | $24.63 | $22.66 | 0.97 | metro |
| Blended | 100% | 1.07 | |||||
Cost by quality level and size in Dover
The cited range is split into basic, standard and premium bands, then scaled to Dover. 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 $3,100
Higher R-value with air sealing around fixtures
Premium
$2,800 to $4,000
Spray foam or heavy air sealing, hard-to-reach attic
| Size | Basic | Standard | Premium |
|---|---|---|---|
| small attic (600 sq ft) | $610 – $1,300 | $1,150 – $1,850 | $1,700 – $2,400 |
| average attic (1,000 sq ft) | $1,000 – $2,200 | $1,900 – $3,100 | $2,800 – $4,000 |
| large attic (1,800 sq ft) | $1,850 – $3,950 | $3,450 – $5,550 | $5,050 – $7,200 |
Why two Dover 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.
Planning more than one job in Dover?
Jobs that often go together with attic insulation are priced below at their usual sizes, using the same Dover wage and price inputs. Compared with national midpoints, roof replacement comes out highest (+1%) and vinyl siding lowest (−6%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Roof replacement | 2,000 sq ft of roof | $6,200 – $12,600 | +1% |
| Metal roof | 2,000 sq ft of roof | $10,300 – $32,400 | level |
| Vinyl siding | 2,100 sq ft of wall | $7,850 – $23,600 | −6% |
| Window replacement | 10 windows | $4,300 – $14,400 | −4% |
| Gutters | 160 linear ft | $1,250 – $4,100 | −2% |
How Dover compares
Same job, same size (1,000 sq ft), priced for the nearest metros. Baltimore is the priciest of the group at $2,750. Lancaster is the cheapest at $2,500.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Dover, DEthis page | $1,000 – $4,000 | $2,500 | |
| Vineland, NJ25 miles | $1,100 – $4,250 | $2,700 | +7% |
| Atlantic City, NJ45 miles | $990 – $4,000 | $2,500 | −1% |
| Philadelphia, PA55 miles | $1,000 – $4,000 | $2,500 | level |
| Baltimore, MD60 miles | $1,150 – $4,350 | $2,750 | +10% |
| Lancaster, PA75 miles | $990 – $3,950 | $2,500 | −1% |
| Delaware (statewide) | $1,000 – $4,000 | $2,500 | level |
| United States | $1,000 – $4,000 | $2,500 | level |
Out of the 300 metros we cover, Dover ranks #106 for the cost of this job (#1 is the most expensive). Statewide, Dover is 0% above the Delaware figure.
Dover is the only Delaware 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 Dover against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Traverse City, MI | 68,440 jobs | $950 – $3,800 | $2,350 | −5% |
| Burlington, NC | 67,830 jobs | $920 – $3,750 | $2,350 | −7% |
| State College, PA | 68,840 jobs | $1,050 – $4,100 | $2,550 | +2% |
| Winchester, VA | 67,740 jobs | $940 – $3,800 | $2,350 | −5% |
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Attic insulation in Dover: your questions
+How much does it cost to insulate an attic in Dover?
For 1,000 sq ft, expect $1,000 to $4,000 in the Dover area. A standard-spec job lands at $1,900 to $3,100. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for attic insulation in Dover?
About $1 to $4 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 Dover or Vineland?
Vineland is 25 miles away. The midpoint for 1,000 sq ft there is $2,700, which is 7% more than Dover ($2,500). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Dover?
About 38% at the midpoint, or $960 out of $2,500. Materials are 62% and permits 0%. Nationally, labor is 36%.
+What would average attic (1,000 sq ft) cost in Dover?
$1,000 to $4,000. Pick a different size in the estimator above to get your own number.
+Does attic insulation need a permit in Dover?
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 Dover area (our national range of $0 to $0 scaled by the local price level).
+Is Dover expensive for attic insulation compared with the rest of Delaware?
Dover is 0% above the Delaware statewide estimate ($2,500 at the midpoint).
+What do insulation workers, floor, ceiling and wall earn in Dover?
BLS has no published metro figure here, so we use the statewide median of $25.75 an hour, compared with $23.62 nationally. The 25th to 75th percentile range is $22.18 to $29.59.
+What do basic and premium attic insulation work cost in Dover?
For 1,000 sq ft, basic work runs $1,000 to $2,200 and premium work $2,800 to $4,000. 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 Dover
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.