ADU Builder · San Diego County
ADU Construction in San Diego
From permits to final inspection, we design-coordinate and build accessory dwelling units that live like a true extension of your home — for family, guests, or rental income.
ADU Types
The right ADU for your property.
Detached ADUs
A standalone backyard home with its own entry, kitchen, and bath — ideal for rental income or multigenerational living.
Attached ADUs
An addition connected to your main house that shares a wall but lives independently.
Garage Conversions
Turn an underused garage into a finished, permitted living space — often the most cost-efficient path.
Junior ADUs (JADUs)
A compact unit of up to 500 sq ft created within the footprint of your existing home.
Our Process
How we build your ADU.
01
Site Visit & Feasibility
We walk your property, review lot size, setbacks, utilities, and access, and talk through your goals and budget.
02
Design & Permits
We coordinate plans with your designer or ours and manage submittals, corrections, and approvals with the city or county.
03
Construction
Foundation through finishes, managed by our team with clear schedules and regular updates.
04
Final Inspection & Move-In
We close out inspections, walk the finished unit with you, and hand over the keys.
Permit Expertise
We handle the paperwork.
Permitting is where most ADU projects stall. As a licensed California general contractor (CSLB #907687), we manage the approval process so you aren't left chasing plan-check comments.
- Zoning, setback, and height review for your specific lot
- Plan submittals and plan-check corrections
- Utility planning — water, sewer, electrical service upgrades
- Fire, Title 24 energy, and building code compliance
- Scheduling and passing all required inspections
- Experience across San Diego city and North County jurisdictions
Cost
How much does it cost to build an ADU in San Diego?
Every lot is different, so we price each ADU after a site visit. These are the factors that shape your budget — we'll walk through each one with you and provide a detailed written estimate.
Type & size
Garage conversions and JADUs typically cost less than a new detached unit; square footage drives most of the budget.
Site conditions
Slopes, soil, access for equipment, and distance to utility connections all affect foundation and site work.
Utilities
Separate meters, sewer laterals, or an electrical panel upgrade can add meaningful cost.
Permit & agency fees
Plan-check, permit, and utility connection fees vary by jurisdiction. California law limits impact fees on smaller ADUs.
Finishes
Cabinetry, flooring, fixtures, and appliances range from practical rental-grade to custom.
Soft & Hard Costs
Architectural and drafting fees depend on the size and complexity of the ADU but typically cost between $5 - $10 per square foot. Vertical construction costs range from $250 - $400 per square foot, depending on the level of finishes.
Ready to add an ADU?
Tell us about your property and goals. We'll respond within one business day to schedule a site visit.