Livermore, Alameda County

ADU / Guest House Cost in Livermore, CA

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

Budget
$131,250
$263/sqf
Mid-Range
$210,000
$420/sqf
High-End
$315,000
$630/sqf

Cost breakdown

Foundation & Framing
25%$52,500
Mechanical (HVAC, Plumbing, Electrical)
20%$42,000
Interior Finishes
20%$42,000
Exterior & Roofing
15%$31,500
Kitchen & Bath Fixtures
10%$21,000
Permits, Plans & Engineering
10%$21,000

Breakdown based on mid-range estimate of $210,000

Typical Timeline
4-8 months
Permits Required

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

Remodeling in Livermore

Eastern Tri-Valley with wine country character. Slightly lower costs than central Bay Area. Growing downtown has sparked residential renovation in surrounding neighborhoods. Hot summers make HVAC important.

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 Livermore

Kitchen Remodel
$31,500 – $94,500
Bathroom Remodel
$15,750 – $50,400
Room Addition
$63,000 – $173,250
Roof Replacement
$13,125 – $39,375
Exterior Paint
$5,250 – $18,375
Whole House Remodel
$283,500 – $945,000

ADU / Guest House cost in other California cities

Ross
$175,000 – $420,000 | Marin County
Hayward
$131,250 – $315,000 | Alameda County
Danville
$150,000 – $360,000 | Contra Costa County
Murrieta
$112,500 – $270,000 | Riverside County
Daly City
$150,000 – $360,000 | San Mateo County
San Ramon
$143,750 – $345,000 | Contra Costa County
Benicia
$125,000 – $300,000 | Solano County
Richmond
$131,250 – $315,000 | Contra Costa County

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