Santa Barbara, Santa Barbara County

ADU / Guest House Cost in Santa Barbara, CA

Santa Barbara remodeling costs are 20% abovethe California state average. Here's what a typical adu / guest house costs in Santa Barbara in 2026, based on a 500 sqf project.

Budget
$150,000
$300/sqf
Mid-Range
$240,000
$480/sqf
High-End
$360,000
$720/sqf

Cost breakdown

Foundation & Framing
25%$60,000
Mechanical (HVAC, Plumbing, Electrical)
20%$48,000
Interior Finishes
20%$48,000
Exterior & Roofing
15%$36,000
Kitchen & Bath Fixtures
10%$24,000
Permits, Plans & Engineering
10%$24,000

Breakdown based on mid-range estimate of $240,000

Typical Timeline
4-8 months
Permits Required

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

Remodeling in Santa Barbara

Santa Barbara's architectural review board enforces strict Spanish Colonial Revival aesthetics. This limits material choices and adds design costs. Red tile roofs and white stucco are essentially required in many areas.

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 Santa Barbara

Kitchen Remodel
$36,000 – $108,000
Bathroom Remodel
$18,000 – $57,600
Room Addition
$72,000 – $198,000
Roof Replacement
$15,000 – $45,000
Exterior Paint
$6,000 – $21,000
Whole House Remodel
$324,000 – $1,080,000

ADU / Guest House cost in other California cities

Palm Springs
$118,750 – $285,000 | Riverside County
El Monte
$112,500 – $270,000 | Los Angeles County
Burlingame
$162,500 – $390,000 | San Mateo County
Mountain View
$162,500 – $390,000 | Santa Clara County
South San Francisco
$150,000 – $360,000 | San Mateo County
San Anselmo
$150,000 – $360,000 | Marin County
San Clemente
$137,500 – $330,000 | Orange County
Culver City
$137,500 – $330,000 | Los Angeles County

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