ADU with large glass doors

Wilmington NC ADU Builders – Port City ADU

We simplify the process of designing, permitting, and building custom detached ADUs in Wilmington, NC.

Discover the benefits of building an Accessory Dwelling Unit in Wilmington, NC

  • A well-designed ADU can add significant resale value to your Wilmington home and provide flexible space for family or rental income.A well-designed ADU can add significant resale value to your Wilmington home and provide flexible space for family or rental income.An ADA well-designed ADU can add significant resale value to your Wilmington home and provide flexible space for family or rental income.U can boost your home's resale value by 20-35%, depending on location and quality of construction.

  • ADUs can generate $1,000 to $3,000 per month in rental income, creating a steady revenue stream.

  • Whether for multi-generational living, a home office, or guests, an ADU maximizes your property's potential.

  • Give aging parents, adult children, or guests their own space while keeping them close.

From our Instagram:

Walkthrough a 350 sq ft ADU with two expandable wings for future build out!
Going vertical with a custom ADU design downtown Wilmington!
Did you know that a home valued at $450,000 in Wilmington that adds a 500 sq ft 1-bed detached ADU. Could resell for $550K–$600K depending on finishes and rental setup. And generate $18K–$24K/year in rental income (6–9% ROI annual
Did you know that a home valued at $450,000 in Wilmington that adds a 500 sq ft 1-bed detached ADU. Could resell for $550K–$600K depending on finishes and rental setup. And generate $18K–$24K/year in rental income (6–9% ROI annually)! #portcityadu #smartinvestment
New ADU project underway! To make the most of the footprint, we’re going with tall ceilings to add volume and natural light—small space, big impact! #PortCityADU #SmartDesign #ADULiving
New ADU project underway! To make the most of the footprint, we’re going with tall ceilings to add volume and natural light—small space, big impact! #PortCityADU #SmartDesign #ADULiving
Under construction: a custom 500 sq ft ADU designed for this investment property in Wilmington. 1 bed. 1 bath. Smart design for long-term value. Contact us to schedule a free tour. #ADU #CustomBuild #WilmingtonNC #InvestmentProperty #UnderConstruction #SmartDesign #InfillHousing #RealEstateInvestment #ADUDesign #TinyHomeLiving #PropertyDevelopment #PortCityADU #ThompsonDesignBuild
Cozy, cute, and cash-flow ready. This 470 sq ft cottage-style ADU is ideal for single-story homes with backyard space. Whether it’s a guest house, rental, or cozy spot for family—this one checks all the boxes. Swipe to see how this tiny
Cozy, cute, and cash-flow ready. This 470 sq ft cottage-style ADU is ideal for single-story homes with backyard space. Whether it’s a guest house, rental, or cozy spot for family—this one checks all the boxes. Swipe to see how this tiny home makes a big impact. #BackyardCottage #RentalIncomeReady #PortCityADU #TinyHomeBigPotential #ADUliving #smartinvesting
Big potential, small footprint. Our new 2-story, 500 sq ft ADU is designed for tight lots and 2-story homes—compact, modern, and fully functional. Swipe to see the floor plans and how every inch is maximized for smart living. #ADUdesign #Sma
Big potential, small footprint. Our new 2-story, 500 sq ft ADU is designed for tight lots and 2-story homes—compact, modern, and fully functional. Swipe to see the floor plans and how every inch is maximized for smart living. #ADUdesign #SmallLotSolution #ModernLiving #PortCityADU #AccessoryDwellingUnit #TinyHomeBigStyle
From dirt to done — swipe through the construction stages of a custom detached ADU. Built to last, custom designed to fit your life. #ADU #PortCityADU #AccessoryDwellingUnit #BackyardHome #CustomBuild #WilmingtonNC #ConstructionLife #DesignBui
From dirt to done — swipe through the construction stages of a custom detached ADU. Built to last, custom designed to fit your life. #ADU #PortCityADU #AccessoryDwellingUnit #BackyardHome #CustomBuild #WilmingtonNC #ConstructionLife #DesignBuild #HomeAddition #SmallSpaceBigImpact #BuildBetter #DetachedADU
We’re live! Welcome to Port City ADU – Wilmington’s one-stop shop for high-quality detached accessory dwelling units. ⁠ Whether you're looking to add rental income, build a home office, or create a space for family — we handle
We’re live! Welcome to Port City ADU – Wilmington’s one-stop shop for high-quality detached accessory dwelling units. ⁠ Whether you're looking to add rental income, build a home office, or create a space for family — we handle the entire process from design to permitting to construction. Follow us for build updates, design inspiration, and tips on making the most of your backyard. 📍Based in Wilmington, NC 🎯 Focused on quality, style & simplicity 🎨 Custom & standard designs available #PortCityADU #ADUlife #WilmingtonNC #BackyardHome #DetachedADU #TinyHouseLiving #HomeAddition #CustomADU
Walkthrough a 350 sq ft ADU with two expandable wings for future build out!
Going vertical with a custom ADU design downtown Wilmington!
Did you know that a home valued at $450,000 in Wilmington that adds a 500 sq ft 1-bed detached ADU. Could resell for $550K–$600K depending on finishes and rental setup. And generate $18K–$24K/year in rental income (6–9% ROI annual New ADU project underway! To make the most of the footprint, we’re going with tall ceilings to add volume and natural light—small space, big impact! #PortCityADU #SmartDesign #ADULiving
Under construction: a custom 500 sq ft ADU designed for this investment property in Wilmington. 1 bed. 1 bath. Smart design for long-term value. Contact us to schedule a free tour. #ADU #CustomBuild #WilmingtonNC #InvestmentProperty #UnderConstructi
Cozy, cute, and cash-flow ready. This 470 sq ft cottage-style ADU is ideal for single-story homes with backyard space. Whether it’s a guest house, rental, or cozy spot for family—this one checks all the boxes. Swipe to see how this tiny Big potential, small footprint. Our new 2-story, 500 sq ft ADU is designed for tight lots and 2-story homes—compact, modern, and fully functional. Swipe to see the floor plans and how every inch is maximized for smart living. #ADUdesign #Sma From dirt to done — swipe through the construction stages of a custom detached ADU. Built to last, custom designed to fit your life. #ADU #PortCityADU #AccessoryDwellingUnit #BackyardHome #CustomBuild #WilmingtonNC #ConstructionLife #DesignBui We’re live! Welcome to Port City ADU – Wilmington’s one-stop shop for high-quality detached accessory dwelling units. ⁠ Whether you're looking to add rental income, build a home office, or create a space for family — we handle

FAQ

  • An ADU is a secondary housing unit located on the same property as a primary residence. It can be a detached structure, a garage conversion, or a unit attached to the main house. ADUs provide flexible living space for family members, rental income, or personal use.

  • Zoning laws and permitting requirements vary by location. In Wilmington, ADUs must comply with local zoning regulations, size restrictions, and setback requirements. Our team at Port City ADU can handle the permitting process to ensure your project meets all local codes.

  • The cost of an ADU depends on size, design, materials, and site conditions. On average, a detached ADU can range from $80,000 to $250,000 or more. We offer standard and custom designs to fit different budgets and needs.

  • Yes, there are multiple financing options available for ADU construction, including:

    • Home equity loans or HELOCs

    • Construction loans

    • Cash-out refinancing

    • Personal savings or private financing

      We can help you explore financing options that best fit your situation.

  • The timeline varies based on design, permitting, and construction complexity. On average, the process takes 5 to 8 months, including planning, permitting, and building. At Port City ADU, we manage the entire process to keep your project on schedule.

Our Process…

  • We work closely with you to create a custom ADU design that fits your needs, property, and budget. Every project is tailored to maximize space, functionality, and aesthetic appeal.

  • We handle all the paperwork, approvals, and coordination with local authorities to ensure a smooth permitting process.

  • Our team manages the entire build, from site preparation to final finishes, delivering a high-quality ADU with expert project management.

  • Enjoy peace of mind with our comprehensive warranty, ensuring your ADU meets quality standards and performs as expected.

Contact us

Interested in working together? Fill out some info and we will be in touch shortly. We can’t wait to hear from you!

Call us at 910-833-1164 to learn more.