Build an ADU, Unlock Your Property's Full Potential
San Diego's ADU boom is here. Add a rental unit, guest house, or multigenerational suite — with BOLD Verified builders who know local permits inside and out.
Why ADU
The Smart Investment in San Diego
Rental Income
San Diego ADU rents average $2,800–$3,500/month. Your ADU can pay for itself in 7–10 years.
Property Value
A well-built ADU adds $150K–$300K to your home's market value in competitive San Diego neighborhoods.
Multigenerational Living
Keep family close without sacrificing privacy. Perfect for aging parents or adult children.
ADU Types
Which Type of ADU Is Right for You?
Every property is different. Your BOLD Verified contractor will help you choose the right fit during a free site assessment.
Detached ADU
Most rental income potential
A separate structure built in your backyard, fully independent from the main home.
$200K–$350K
Learn more →Attached ADU
Seamless integration
An addition connected to your main home, sharing at least one wall for seamless integration.
$150K–$250K
Learn more →Garage Conversion
Most affordable option
Convert your existing garage into a fully livable unit — no new foundation required.
$80K–$150K
Learn more →Junior ADU (JADU)
Fastest to permit
Up to 500 sqft created within the existing walls of your home.
$50K–$100K
Learn more →Permitting
Every ADU Requires a Permit — Here's What to Expect
Design & Planning
Your contractor finalizes floor plans and prepares permit-ready drawings.
Permit Submission
Plans are submitted and reviewed by the city or county.
Construction
Your BOLD Verified builder handles the full build, inspections included.
Move-In Ready
Final inspection, certificate of occupancy, and your ADU is ready.
BOLD Verified contractors are experts in San Diego's ADU permitting process and handle all permit filings on your behalf. You focus on the vision — they handle the paperwork.
Service Area
We Serve All of San Diego County
Coastal San Diego
Inland Communities
North County
South Bay
ADU Income Calculator
How Much Could Your ADU Earn You?
Slide to your ADU size and see realistic San Diego rental income and construction cost estimates.
Estimated Monthly Rent
$2,400 – $3,000
Annual Rental Income
$28,800 – $36,000
10-Year Rental Income
$288,000 – $360,000
Est. Construction Cost
$180,000 – $250,000
Estimates based on typical San Diego ADU rental rates and construction costs. Actual income and cost vary by neighborhood, finishes, and site conditions.
The BOLD Standard
Only the Best Make It Into Our Network
Every BOLD Verified contractor passes a rigorous vetting process — so you never have to worry about who you're letting into your home.
License Verified
CSLB license confirmed active and in good standing
Fully Insured
General liability & workers' comp required
4.5+ Star Rating
Minimum review score across all platforms
Fast Response
Must reply to leads within 4 business hours
FAQ
Questions Answered
Ready to Get Started?
Get matched with a BOLD Verified contractor in 24 hours.
BOLD Home Solutions connects San Diego homeowners with licensed ADU contractors and accessory dwelling unit builders across the county — from La Jolla and Del Mar to Chula Vista and El Cajon. Whether you're planning a detached ADU, garage conversion, or junior ADU, our verified ADU construction San Diego partners handle permitting, design, and build from start to finish.