Vacaville, Solano County

ADU / Guest House Cost in Vacaville, CA

Vacaville remodeling costs are 10% belowthe California state average. Here's what a typical adu / guest house costs in Vacaville in 2026, based on a 500 sqf project.

Budget
$112,500
$225/sqf
Mid-Range
$180,000
$360/sqf
High-End
$270,000
$540/sqf

Cost breakdown

Foundation & Framing
25%$45,000
Mechanical (HVAC, Plumbing, Electrical)
20%$36,000
Interior Finishes
20%$36,000
Exterior & Roofing
15%$27,000
Kitchen & Bath Fixtures
10%$18,000
Permits, Plans & Engineering
10%$18,000

Breakdown based on mid-range estimate of $180,000

Typical Timeline
4-8 months
Permits Required

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

Remodeling in Vacaville

Gateway between the Bay Area and Sacramento. Affordable housing with strong remodeling value. Hot summers make energy efficiency, insulation, and HVAC critical components.

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 Vacaville

Kitchen Remodel
$27,000 – $81,000
Bathroom Remodel
$13,500 – $43,200
Room Addition
$54,000 – $148,500
Roof Replacement
$11,250 – $33,750
Exterior Paint
$4,500 – $15,750
Whole House Remodel
$243,000 – $810,000

ADU / Guest House cost in other California cities

Carlsbad
$137,500 – $330,000 | San Diego County
Irvine
$137,500 – $330,000 | Orange County
Chula Vista
$118,750 – $285,000 | San Diego County
Mission Viejo
$131,250 – $315,000 | Orange County
San Clemente
$137,500 – $330,000 | Orange County
Glendale
$131,250 – $315,000 | Los Angeles County
Burbank
$125,000 – $300,000 | Los Angeles County
Beverly Hills
$162,500 – $390,000 | Los Angeles County

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