Castro Valley, Alameda County

Whole House Remodel Cost in Castro Valley, CA

Castro Valley remodeling costs are 10% abovethe California state average. Here's what a typical whole house remodel costs in Castro Valley in 2026, based on a 1800 sqf project.

Budget
$297,000
$165/sqf
Mid-Range
$594,000
$330/sqf
High-End
$990,000
$550/sqf

Cost breakdown

Kitchen & Baths
30%$178,200
Framing & Structural
15%$89,100
Mechanical Systems
15%$89,100
Flooring & Finishes
15%$89,100
Exterior & Roofing
10%$59,400
Permits, Design & Management
15%$89,100

Breakdown based on mid-range estimate of $594,000

Typical Timeline
4-12 months
Permits Required

Multiple permits: building, electrical, plumbing, mechanical, possibly planning.

Remodeling in Castro Valley

Unincorporated East Bay community with a suburban feel. Many 1950s-60s ranch homes being renovated. Alameda County handles permitting, which is straightforward.

A whole house remodel transforms every room. It's the largest residential project short of new construction. Requires careful phasing, multiple trades, and project management.

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Other projects in Castro Valley

Kitchen Remodel
$33,000 – $99,000
Bathroom Remodel
$16,500 – $52,800
ADU / Guest House
$137,500 – $330,000
Room Addition
$66,000 – $181,500
Roof Replacement
$13,750 – $41,250
Exterior Paint
$5,500 – $19,250

Whole House Remodel cost in other California cities

Foster City
$337,500 – $1,125,000 | San Mateo County
Union City
$297,000 – $990,000 | Alameda County
Orinda
$337,500 – $1,125,000 | Contra Costa County
Santa Monica
$324,000 – $1,080,000 | Los Angeles County
West Hollywood
$324,000 – $1,080,000 | Los Angeles County
San Diego
$270,000 – $900,000 | San Diego County
San Rafael
$324,000 – $1,080,000 | Marin County
Poway
$270,000 – $900,000 | San Diego County

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