Ventura, Ventura County

ADU / Guest House Cost in Ventura, CA

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

Budget
$125,000
$250/sqf
Mid-Range
$200,000
$400/sqf
High-End
$300,000
$600/sqf

Cost breakdown

Foundation & Framing
25%$50,000
Mechanical (HVAC, Plumbing, Electrical)
20%$40,000
Interior Finishes
20%$40,000
Exterior & Roofing
15%$30,000
Kitchen & Bath Fixtures
10%$20,000
Permits, Plans & Engineering
10%$20,000

Breakdown based on mid-range estimate of $200,000

Typical Timeline
4-8 months
Permits Required

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

Remodeling in Ventura

Ventura offers coastal living with more moderate costs than Santa Barbara or LA. Beach-adjacent properties require marine-grade materials.

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.

Have estimates for your Ventura project?

Upload them and get an AI-powered comparison with CSLB license verification. Free.

Compare Estimates →

Other projects in Ventura

Kitchen Remodel
$30,000 – $90,000
Bathroom Remodel
$15,000 – $48,000
Room Addition
$60,000 – $165,000
Roof Replacement
$12,500 – $37,500
Exterior Paint
$5,000 – $17,500
Whole House Remodel
$270,000 – $900,000

ADU / Guest House cost in other California cities

Woodside
$168,750 – $405,000 | San Mateo County
Moraga
$150,000 – $360,000 | Contra Costa County
Vacaville
$112,500 – $270,000 | Solano County
Fresno
$100,000 – $240,000 | Fresno County
Oceanside
$125,000 – $300,000 | San Diego County
Bakersfield
$100,000 – $240,000 | Kern County
Huntington Beach
$137,500 – $330,000 | Orange County
Carlsbad
$137,500 – $330,000 | San Diego County

Get a personalized estimate

Use our interactive cost estimator to adjust square footage and see detailed pricing for your specific project.

Open Cost Estimator →