Huntington Beach, Orange County

ADU / Guest House Cost in Huntington Beach, CA

Huntington Beach remodeling costs are 10% abovethe California state average. Here's what a typical adu / guest house costs in Huntington Beach 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 Huntington Beach

Coastal location adds considerations for salt air corrosion and moisture. Material selections need to account for the marine environment - stainless steel, marine-grade finishes.

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 Huntington Beach

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

Belmont
$156,250 – $375,000 | San Mateo County
Thousand Oaks
$131,250 – $315,000 | Ventura County
Burbank
$125,000 – $300,000 | Los Angeles County
Los Angeles
$131,250 – $315,000 | Los Angeles County
Manhattan Beach
$156,250 – $375,000 | Los Angeles County
San Diego
$125,000 – $300,000 | San Diego County
Woodland Hills
$131,250 – $315,000 | Los Angeles County
Long Beach
$125,000 – $300,000 | Los Angeles County

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