Stockton, San Joaquin County

ADU / Guest House Cost in Stockton, CA

Stockton remodeling costs are 15% belowthe California state average. Here's what a typical adu / guest house costs in Stockton in 2026, based on a 500 sqf project.

Budget
$106,250
$213/sqf
Mid-Range
$170,000
$340/sqf
High-End
$255,000
$510/sqf

Cost breakdown

Foundation & Framing
25%$42,500
Mechanical (HVAC, Plumbing, Electrical)
20%$34,000
Interior Finishes
20%$34,000
Exterior & Roofing
15%$25,500
Kitchen & Bath Fixtures
10%$17,000
Permits, Plans & Engineering
10%$17,000

Breakdown based on mid-range estimate of $170,000

Typical Timeline
4-8 months
Permits Required

Building, electrical, plumbing, mechanical. May require plan check.

Remodeling in Stockton

Growing Central Valley city with affordable remodeling costs. Many homes from the 2000s housing boom are now reaching the age where updates are needed.

California allows ADUs on most residential lots since 2020. An ADU adds living space and rental income. Cities must approve or deny within 60 days of a complete application.

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Other projects in Stockton

Kitchen Remodel
$25,500 – $76,500
Bathroom Remodel
$12,750 – $40,800
Room Addition
$51,000 – $140,250
Roof Replacement
$10,625 – $31,875
Exterior Paint
$4,250 – $14,875
Whole House Remodel
$229,500 – $765,000

ADU / Guest House cost in other California cities

Hayward
$131,250 – $315,000 | Alameda County
Walnut Creek
$143,750 – $345,000 | Contra Costa County
San Anselmo
$150,000 – $360,000 | Marin County
Fresno
$100,000 – $240,000 | Fresno County
Newark
$137,500 – $330,000 | Alameda County
Santa Rosa
$137,500 – $330,000 | Sonoma County
Pacifica
$150,000 – $360,000 | San Mateo County
Belmont
$156,250 – $375,000 | San Mateo County

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