ADU CONTRACTOR SAN DIEGO
Full-service ADU design, permits, and construction in San Diego. One licensed team from blueprint to keys — no subcontractor shuffle.
Architecture · Engineering · Permits · Construction — All Under One Roof · CSLB #1160701
Why San Diego Homeowners Choose Payless4ADU
We're a licensed Southern California ADU contractor (CSLB #1160701) that handles architecture, engineering, permits, and construction under one roof. No subcontractor shuffle. No surprise invoices. Just a straight answer on what your project will cost and how long it will take.
About our team- Familiar with San Diego's Development Services Department and pre-approved ADU plan program.
- Experience with coastal overlay zone properties and Coastal Commission requirements.
- Fixed-price contracts — no time-and-materials surprises.
- In-house architecture and structural engineering — no fragmented teams.
- Strong track record in North Park, City Heights, Kensington, and Clairemont.
- Se Habla Español — bilingual staff available.
San Diego ADU Permit Rules at a Glance
Every city in Southern California layers its own standards on top of California state ADU law. Here's what matters most for San Diego homeowners.
Rear & Side Setback
4 ft minimum (detached ADU)
Max Height
16 ft (18 ft near major transit)
Max Size
Up to 1,200 sq ft
JADU Max Size
500 sq ft (within existing structure)
Permit Timeline
4–8 weeks (pre-approved plan); 8–14 weeks (standard)
Replacement Parking
Not required for garage conversions (state law)
Coastal Overlay Zone
Additional Coastal Development Permit required
Owner-Occupancy
Not required (state law preempts)
Permit Fees
Approx. $5,000–$12,000 depending on scope
ADU Cost Estimates in San Diego
Ranges include architecture, engineering, permits, and construction. They exclude landscaping, utility connection fees, and furnishings.
| ADU Type | Estimated Cost |
|---|---|
| Junior ADU (interior conversion) | $45,000 – $85,000 |
| Garage conversion | $85,000 – $135,000 |
| Detached ADU (400–600 sq ft) | $150,000 – $220,000 |
| Detached ADU (800–1,200 sq ft) | $220,000 – $360,000 |
San Diego 1BR ADUs typically rent for $2,100–$2,800/month. With vacancy rates below 3%, ADU returns in San Diego are among the strongest in Southern California.
Ready to Build in San Diego?
Get a free ADU site analysis for your San Diego property. We'll assess your lot, flag any coastal or permit complications, and give you a realistic cost range — no pressure, no BS.
Licensed · CSLB #1160701 · Se Habla Español