Home addition cost in Wilmington, NC
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $33,900 – $68,800
- Per sq ft
- $111 – $223
- before permit
- Versus US midpoint
- −11%
- US $57,500
- Rank of 300 metros
- #200
- 1 = most expensive
A home addition in Wilmington, NC usually costs $33,900 to $68,800 for 300 sq ft. That works out to about $111 to $223 per sq ft before permits. Compared with the national midpoint that is $6,150 less. Carpenters earn a median of $24.44 an hour in the Wilmington area, 16% below the US median of $29.12.
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Estimated cost for 300 sq ft in Wilmington, NC, standard level
$44,400 to $58,300
About $145 to $189 per sq ft before permits. Labor is about 64% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $15,100 | $19,700 |
| Labor | $28,400 | $37,100 |
| Permits and fees | $920 | $1,500 |
| Total | $44,400 | $58,300 |
Cost breakdown for 300 sq ft in Wilmington, NC
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,600 | $17,400 | $23,200 | 34% |
| Labor | $21,800 | $32,800 | $43,700 | 64% |
| Permits and fees | $480 | $1,200 | $1,950 | 2% |
| Total | $33,900 | $51,400 | $68,800 | 100% |
Why Wilmington prices look the way they do
The wage side of the estimate leans on carpenters, who do 50% of the hours on a typical job. Their local median is $24.44 an hour. Add the other trades involved and the blended wage index for Wilmington is 0.86 (US = 1.00), which puts labor at 64% of the total.
Materials are scaled with BEA's regional price parity for goods. Wilmington is at 96.6 against 100 for the US, so a materials line of $18,000 nationally becomes $17,400 here (midpoint, 300 sq ft). Permits follow the all-items index of 96.4: $480 to $1,950.
Why two Wilmington quotes can differ
Permits
Construction permits run $500-$2,000, or $5-$21 per $1,000 of project cost (HomeGuide).
Foundation
A foundation, framing, roofing and matching exterior finishes all have to be built before the interior work starts.
Type of addition
A new room is $125-$250 per sq ft; a bump-out $85-$200; an attic conversion $50-$150; a garage conversion $50-$200 (HomeGuide).
What local crews earn in Wilmington
The labor line is built from BLS wage data, one trade at a time. This job draws on 6 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 Wilmington the blend is 0.86.
Carpenters (47-2031), 50% of the weighting: a median of $24.44 an hour, 16% below the US median of $29.12. The middle half of them earn between $22.06 and $28.70 an hour. About 640 work in the metro. That is 33.5 per 10,000 jobs, compared with 43.1 nationally, so expect fewer local crews to bid.
Cement masons and concrete finishers (47-2051), 10% of the weighting: a median of $21.17 an hour, 23% below the US median of $27.41. The middle half of them earn between $17.91 and $23.49 an hour. About 150 work in the metro. That is 7.8 per 10,000 jobs, compared with 13.3 nationally, so expect fewer local crews to bid.
For electricians (47-2111, weighted 10%) the local median is $26.00 an hour, which is 14% below the national $30.38. The middle half of them earn between $22.07 and $28.87 an hour. BLS counts 910 of them working in the area, 47.6 for every 10,000 jobs (US: 48.7), so the local bench is about average.
Plumbers, pipefitters and steamfitters (47-2152), 10% of the weighting: a median of $27.11 an hour, 12% below the US median of $30.67. The middle half of them earn between $22.29 and $30.10 an hour. About 690 work in the metro. That is 36.1 per 10,000 jobs, compared with 30.0 nationally, which suggests plenty of local crews to bid.
For drywall and ceiling tile installers (47-2081, weighted 10%) the local median is $27.66 an hour, which is in line with the national $28.33. The middle half of them earn between $20.82 and $27.66 an hour. BLS counts 100 of them working in the area, 5.2 for every 10,000 jobs (US: 5.3), so the local bench is about average.
Roofers (47-2181), 10% of the weighting: a median of $23.43 an hour, 12% below the US median of $26.65. The middle half of them earn between $18.76 and $24.20 an hour. About 170 work in the metro. That is 8.9 per 10,000 jobs, compared with 8.7 nationally, so the supply of crews looks typical.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $2,800 to the midpoint estimate; the 25th percentile takes off about $1,550. That is a swing of roughly 3.0% to 5.4% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Wilmington has 191,280 jobs in total (BLS, May 2025), ranking 120th by size among the 300 metros on this site.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $22.06 | $24.44 | $28.70 | $29.12 | 0.84 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $17.91 | $21.17 | $23.49 | $27.41 | 0.77 | metro |
| Electricians (47-2111) | 10% | $22.07 | $26.00 | $28.87 | $30.38 | 0.86 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $22.29 | $27.11 | $30.10 | $30.67 | 0.88 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $20.82 | $27.66 | $27.66 | $28.33 | 0.98 | metro |
| Roofers (47-2181) | 10% | $18.76 | $23.43 | $24.20 | $26.65 | 0.88 | metro |
| Blended | 100% | 0.86 | |||||
Wilmington weather and the home addition calendar
Climate numbers on this page come from NOAA's 1991-2020 U.S. Climate Normals at the nearest suitable station, Wilmington Intl Ap (5 miles from the city center). They are 30-year averages, so any one year can run hotter, colder or wetter.
For digging, grading and setting material in the ground, the comfortable months in Wilmington are August through June: 11 of 12. Outside them, July has an average daytime high of 90°F or more.
Wilmington gets about 60 inches of precipitation in a normal year. The wettest months are July, August and September (8.7 inches in September). Inside the workable window, February and April are the driest, at 3.5 and 3.1 inches. The station averages about 45 days a year at 90°F or above.
We do not adjust the estimate by month, because we have no reliable published data on seasonal pricing. It is still worth asking contractors whether an off-peak start date changes their bid.
| Month | Avg high °F | Avg low °F | Precip (in) | For this job |
|---|---|---|---|---|
| Jan | 57 | 36 | 3.8 | Workable |
| Feb | 60 | 38 | 3.5 | Workable |
| Mar | 67 | 44 | 4.0 | Workable |
| Apr | 75 | 53 | 3.1 | Workable |
| May | 81 | 61 | 4.5 | Workable |
| Jun | 87 | 69 | 5.7 | Workable |
| Jul | 90 | 73 | 6.9 | Hot |
| Aug | 88 | 72 | 8.2 | Workable |
| Sep | 84 | 67 | 8.7 | Workable |
| Oct | 76 | 56 | 4.7 | Workable |
| Nov | 67 | 45 | 3.6 | Workable |
| Dec | 60 | 39 | 3.7 | Workable |
Cost by quality level and size in Wilmington
The cited range is split into basic, standard and premium bands, then scaled to Wilmington. Bands overlap, because plenty of standard jobs cost as much as a light premium one. Sizes run from bump-out (100 sq ft) to large suite (600 sq ft).
Basic
$33,900 to $47,900
Bump-out or simple room without plumbing
Standard
$44,400 to $58,300
Standard room addition with HVAC and electrical
Premium
$54,800 to $68,800
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $11,600 – $16,700 | $15,400 – $20,400 | $19,200 – $24,200 |
| 20x20 room (400 sq ft) | $45,100 – $63,500 | $58,900 – $77,300 | $72,700 – $91,100 |
| large suite (600 sq ft) | $67,300 – $94,700 | $87,800 – $115,000 | $108,500 – $135,500 |
Planning more than one job in Wilmington?
Jobs that often go together with home addition are priced below at their usual sizes, using the same Wilmington wage and price inputs. Compared with national midpoints, kitchen remodel comes out highest (−6%) and bathroom remodel lowest (−9%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,500 – $29,800 | −6% |
| Bathroom remodel | 45 sq ft | $4,300 – $21,200 | −9% |
| Detached garage | 576 sq ft | $26,500 – $53,200 | −9% |
| Roof replacement | 2,000 sq ft of roof | $5,600 – $11,600 | −8% |
How Wilmington compares
Same job, same size (300 sq ft), priced for the nearest metros. Raleigh is the priciest of the group at $51,400. Fayetteville is the cheapest at $48,700.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Wilmington, NCthis page | $33,900 – $68,800 | $51,400 | |
| Myrtle Beach, SC60 miles | $32,200 – $65,400 | $48,800 | −5% |
| Fayetteville, NC75 miles | $32,200 – $65,300 | $48,700 | −5% |
| Greenville, NC100 miles | $32,300 – $65,500 | $48,900 | −5% |
| Florence, SC100 miles | $33,100 – $67,000 | $50,100 | −3% |
| Raleigh, NC105 miles | $33,900 – $68,900 | $51,400 | level |
| North Carolina (statewide) | $33,300 – $67,500 | $50,400 | −2% |
| United States | $38,000 – $77,000 | $57,500 | +12% |
Out of the 300 metros we cover, Wilmington ranks #200 for the cost of this job (#1 is the most expensive). Statewide, Wilmington is 2% above the North Carolina figure.
Elsewhere in North Carolina
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Charlotte, NC | 1,358,370 jobs | $33,900 – $68,800 | $51,300 | level |
| Raleigh, NC | 743,120 jobs | $33,900 – $68,900 | $51,400 | level |
| Greensboro, NC | 365,410 jobs | $33,700 – $68,400 | $51,100 | −1% |
| Durham, NC | 344,020 jobs | $33,900 – $68,800 | $51,400 | level |
| Winston, NC | 271,980 jobs | $33,000 – $66,900 | $49,900 | −3% |
| Asheville, NC | 180,620 jobs | $33,700 – $68,400 | $51,100 | −1% |
Metros of a similar size
Big cities and small ones price differently, so here is Wilmington against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Boulder, CO | 192,390 jobs | $37,800 – $76,600 | $57,200 | +11% |
| Pensacola, FL | 190,480 jobs | $32,400 – $65,800 | $49,100 | −4% |
| Corpus Christi, TX | 192,580 jobs | $32,400 – $65,800 | $49,100 | −4% |
| Salem, OR | 188,620 jobs | $41,100 – $83,200 | $62,200 | +21% |
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 $44,400 to $58,300 for Wilmington, NC is attached.
Detailed home addition report for Wilmington, NC, $9
The report lays out the home addition numbers for Wilmington, NC line by line, with the local wage and price inputs, permit and timing notes, a quote comparison sheet and the full method. Save your estimate above, preview page 1 free, and unlock the full report for $9 one-time, or get every report with CostLocal Pro.
Home addition in Wilmington: your questions
+How much does it cost to build a home addition in Wilmington?
For 300 sq ft, expect $33,900 to $68,800 in the Wilmington area. A standard-spec job lands at $44,400 to $58,300. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Wilmington?
About $111 to $223 per sq ft for materials and labor, plus $480 to $1,950 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Wilmington or Myrtle Beach?
Myrtle Beach is 60 miles away. The midpoint for 300 sq ft there is $48,800, which is 5% less than Wilmington ($51,400). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Wilmington?
About 64% at the midpoint, or $32,800 out of $51,400. Materials are 34% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Wilmington?
$45,100 to $91,100. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Wilmington?
Often, but rules are set by your city or county building office, so call before you hire. Budget $480 to $1,950 for fees in the Wilmington area (our national range of $500 to $2,000 scaled by the local price level).
+Is Wilmington expensive for home addition compared with the rest of North Carolina?
Wilmington is 2% above the North Carolina statewide estimate ($50,400 at the midpoint). We cover 11 metros in North Carolina; see the state page to compare them.
+What do carpenters earn in Wilmington?
The BLS median is $24.44 an hour in the Wilmington area, compared with $29.12 nationally. The 25th to 75th percentile range is $22.06 to $28.70.
+What do basic and premium home addition work cost in Wilmington?
For 300 sq ft, basic work runs $33,900 to $47,900 and premium work $54,800 to $68,800. Basic means: bump-out or simple room without plumbing. Premium means: large addition with bath or kitchen and a new foundation.
+When is the best time to build a home addition in Wilmington?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are August through June. February and April are typically the driest of those months. Local contractors' schedules matter as much as the weather, so book early for the busy months.
Home addition near Wilmington
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 a Home Addition Cost? (2026) (accessed November 4, 2026)
- Cost to Renovate: Renovation Labor Report 2026: Where the Money Goes (accessed November 4, 2026)
- HomeGuide: 2026 Building Permit Costs | Fees & Cost Calculator (accessed November 4, 2026)
- BLS Occupational Employment and Wage Statistics, May 2025
- BEA Regional Price Parities, 2024
- NOAA NCEI U.S. Climate Normals, 1991-2020
Note on derived figures: Materials = 32% of the installed price, from Cost to Renovate's mid-range 'Structural' category split (56% labor, 32% materials, 11% permits and design). It is a category average rather than an addition-specific figure.