Accessory Dwelling Unit (ADU) Construction in Wilmington, NC — Costs $53,850 to $314,125
What does accessory dwelling unit (adu) construction cost in Wilmington? Average $134,625, ranging $53,850–$314,125. Labor runs $26.55/hr locally — 10% below the national average. Free breakdown with material + labor split.
Wilmington, NC Market
-10% vs nationalLabor Rate
$26.55/hr
Material Index
91
Avg Permit Cost
$828
Median Home Price
$251,621
Wilmington is a mid-sized city in North Carolina with a healthy pool of local contractors. Homeowners generally have several options to compare for a accessory dwelling unit (adu) construction, which helps keep pricing competitive. Wilmington offers slightly below-average renovation costs, giving homeowners a small cost advantage compared to most US markets. The median home in Wilmington is valued at $251,621, putting this project at about 53.5% of home value — a moderate investment with a projected 80% ROI.
Low Estimate
$53,850
National: $60,000
Mid-Range
$134,625
National: $150,000
High End
$314,125
National: $350,000
Per Sq Ft
$224
National: $250
Accessory Dwelling Unit (ADU) Construction Cost Calculator for Wilmington
Adjusted for Wilmington's labor rate ($26.55/hr) and material costs (index 91).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Wilmington
$134,625
Based on 200 sq ft at mid quality, adjusted for Wilmington market rates.
Local Cost Breakdown
At Wilmington's average rate of $26.55/hr (11% below national avg)
Material cost index 91 (9% below national baseline of 100)
Accessory Dwelling Unit (ADU) Construction vs. Home Value in Wilmington
| Metric | Wilmington | National Avg |
|---|---|---|
| Accessory Dwelling Unit (ADU) Construction (Mid-Range) | $134,625 | $150,000 |
| Median Home Price | $251,621 | $350,000 |
| Project as % of Home Value | 53.5% | 42.9% |
| Estimated ROI | 80% | 80% |
| Median Household Income | $44,868 | $75,000 |
What Affects the Price in Wilmington
- 1Local labor rates ($26.55/hr in Wilmington)
- 2Material cost index (91 vs national 100)
- 3Attached vs detached
- 4Size and bedroom count
- 5Kitchen and bath quality
- 6Local ADU regulations
Popular Upgrades
- Full kitchen
- Separate entrance
- Solar panels for energy independence
Other Projects in Wilmington, NC
Second Story Addition
$179,500
Room Addition
$80,775
Swimming Pool Installation
$58,500
Garage Addition
$49,363
Home Addition
$71,900
Inground Swimming Pool
$58,581
Attic Conversion
$49,294
Swimming Pool Construction
$44,813
Accessory Dwelling Unit (ADU) Construction in Other North Carolina Cities
Planning a Accessory Dwelling Unit (ADU) Construction in Wilmington
Building permits are typically required for a accessory dwelling unit (adu) construction in Wilmington. The average permit fee in this area is $828, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 6-18 months from start to finish.
A accessory dwelling unit (adu) construction is a complex project best left to licensed professionals. In Wilmington, skilled contractors charge an average of $26.55/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
In Wilmington, where the median household income is $44,868, a $134,625 project requires careful budgeting. Look into home improvement loans, HELOC options, or local grants that may be available in North Carolina.
Accessory Dwelling Unit (ADU) Construction — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
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