Cost of accessory dwelling unit — Wilmington, NC
Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
About this service
Building an ADU involves several variables that shift the total investment. Your site conditions, the type of foundation, and the quality of finishes you choose will dictate whether you land on the lower or higher end of the spectrum. Because every lot is unique, we provide a breakdown of your specific project requirements to ensure full transparency. Exact pricing confirmed free on the call.
Frequently asked in Wilmington
What's the best ADU for a property in Wilmington, NC?
How much does an ADU cost in Wilmington, North Carolina?
Who are the best accessory dwelling unit companies in Wilmington?
What is the typical accessory dwelling unit construction cost in Wilmington?
What ADU services are available in Wilmington, NC?
In Wilmington, NC, ADU services encompass the entire process from initial consultation to final construction. This includes design, obtaining permits, and building the unit itself. You can find professionals who specialize in navigating local zoning regulations and ensuring your ADU meets all safety standards. Whether you're looking for a small backyard cottage or an attached living space, these services are designed to make the process smooth and efficient.
Can you build a modular accessory dwelling unit in Wilmington?
What does 'accessory dwelling unit' mean in Wilmington?
Also serving nearby: Fayetteville · Greenville · Raleigh · Cary · Durham
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More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Wilmington — population 122,698; about 2,386 residents per square mile across 51.4 sq mi. ZIP codes covered include 28401, 28402, 28403, 28404, 28405, 28406, 28407, 28408.
Neighborhoods served in Wilmington: Downtown Wilmington, Carolina Beach Road, Ogden, Midtown Wilmington, Monkey Junction — and every surrounding area.
Areas we serve
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