Poway, San Diego County

ADU / Guest House Cost in Poway, CA

Poway remodeling costs are nearthe California state average. Here's what a typical adu / guest house costs in Poway 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 Poway

Suburban North County community known as 'The City in the Country.' Large lots and family homes. Fire risk in eastern areas adds defensible space requirements.

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 Poway

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

Burbank
$125,000 – $300,000 | Los Angeles County
Martinez
$125,000 – $300,000 | Contra Costa County
Petaluma
$137,500 – $330,000 | Sonoma County
Livermore
$131,250 – $315,000 | Alameda County
Sonoma
$143,750 – $345,000 | Sonoma County
Hayward
$131,250 – $315,000 | Alameda County
Danville
$150,000 – $360,000 | Contra Costa County
Pleasant Hill
$131,250 – $315,000 | Contra Costa County

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