Pacifica, San Mateo County

ADU / Guest House Cost in Pacifica, CA

Pacifica remodeling costs are 20% abovethe California state average. Here's what a typical adu / guest house costs in Pacifica 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 Pacifica

Coastal location means salt air exposure and stricter building requirements. Many homes perched on hillsides require foundation work. Limited contractor access drives costs slightly higher.

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 Pacifica project?

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

Compare Estimates →

Other projects in Pacifica

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

San Francisco
$168,750 – $405,000 | San Francisco County
Mill Valley
$162,500 – $390,000 | Marin County
Los Altos
$168,750 – $405,000 | Santa Clara County
Burlingame
$162,500 – $390,000 | San Mateo County
Sausalito
$162,500 – $390,000 | Marin County
Los Gatos
$162,500 – $390,000 | Santa Clara County
Moraga
$150,000 – $360,000 | Contra Costa County
Tiburon
$168,750 – $405,000 | Marin 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 →