ADU Contractor Wilmington NC
Detached units, garage conversions, and attached ADUs with full permitting. 30+ ADUs built with 20+ years of coastal construction expertise.
An ADU (accessory dwelling unit) adds a self-contained living space to your property — perfect for rental income, aging parents, or a home office. Swanson Construction handles everything from zoning research and design to permitting and construction. In Wilmington, a properly permitted ADU can rent for $1,200-$2,500/month.
What We Do
Detached ADUs
Standalone cottages up to 1,200 sq ft with full kitchen, bath, and separate entrance.
Garage Conversions
Transform your existing garage into a functional living space — the most affordable option.
Attached ADUs
Connected suites up to 800 sq ft seamlessly integrated with your main home.
Full Permitting
We handle all zoning research, permit applications, and city coordination.
Foundation & Utilities
Grading, utility connections, and foundation work for coastal soil conditions.
Inspections & Occupancy
All required inspections managed, certificate of occupancy obtained.
Our Process
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Options for Every Budget
Compare our tiers to find the right scope for your project.
| Tier Name | Price Range | Timeline | What's Included | Best For |
|---|---|---|---|---|
Garage Conversion | $60,000 - $120,000 | 3-4 months |
| Budget-conscious option using existing structure |
Attached ADU Most Popular | $120,000 - $200,000 | 5-7 months |
| Multi-generational living or home office |
Detached ADU | $150,000 - $300,000 | 8-12 months |
| Rental income or complete privacy |
Garage Conversion
$60,000 - $120,000
Timeline: 3-4 months
What's Included
- Interior buildout
- Kitchen & bathroom
- Electrical & plumbing
- HVAC system
- Permits & inspections
Best For
Budget-conscious option using existing structure
Attached ADU
$120,000 - $200,000
Timeline: 5-7 months
What's Included
- Up to 800 sq ft
- Separate entrance
- Full kitchen & bath
- Dedicated HVAC
- Seamless integration
- All permits
Best For
Multi-generational living or home office
Detached ADU
$150,000 - $300,000
Timeline: 8-12 months
What's Included
- Up to 1,200 sq ft
- Standalone structure
- Full kitchen & bath
- Separate utilities
- Custom design
- All permits & inspections
Best For
Rental income or complete privacy
Frequently Asked Questions
Free Consultation
No obligation. Transparent pricing.
(910) 443-4113Get Free EstimateProudly serving Wilmington, Wrightsville Beach, Carolina Beach, Kure Beach, Hampstead, and Leland. View all service areas
ADU Contractor in: Wilmington | Hampstead | Kure Beach | Wrightsville Beach
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Free estimates with transparent pricing. No pressure, no obligation.