Pasadena, Los Angeles County

ADU / Guest House Cost in Pasadena, CA

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

Budget
$137,500
$275/sqf
Mid-Range
$220,000
$440/sqf
High-End
$330,000
$660/sqf

Cost breakdown

Foundation & Framing
25%$55,000
Mechanical (HVAC, Plumbing, Electrical)
20%$44,000
Interior Finishes
20%$44,000
Exterior & Roofing
15%$33,000
Kitchen & Bath Fixtures
10%$22,000
Permits, Plans & Engineering
10%$22,000

Breakdown based on mid-range estimate of $220,000

Typical Timeline
4-8 months
Permits Required

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

Remodeling in Pasadena

Pasadena's historic districts have strict design review requirements that add time and cost. Craftsman home restorations are common and command premium pricing from specialized contractors.

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 Pasadena

Kitchen Remodel
$33,000 – $99,000
Bathroom Remodel
$16,500 – $52,800
Room Addition
$66,000 – $181,500
Roof Replacement
$13,750 – $41,250
Exterior Paint
$5,500 – $19,250
Whole House Remodel
$297,000 – $990,000

ADU / Guest House cost in other California cities

Escondido
$112,500 – $270,000 | San Diego County
San Rafael
$150,000 – $360,000 | Marin County
Los Gatos
$162,500 – $390,000 | Santa Clara County
Danville
$150,000 – $360,000 | Contra Costa County
San Jose
$156,250 – $375,000 | Santa Clara County
San Carlos
$156,250 – $375,000 | San Mateo County
Concord
$125,000 – $300,000 | Contra Costa County
Pleasant Hill
$131,250 – $315,000 | Contra Costa County

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