Del Mar, San Diego County

ADU / Guest House Cost in Del Mar, CA

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

Tiny, ultra-premium coastal community. Very high home values justify major renovations. Strict design review and coastal regulations. Small-town feel with Beverly Hills pricing.

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 Del Mar

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

El Monte
$112,500 – $270,000 | Los Angeles County
Los Angeles
$131,250 – $315,000 | Los Angeles County
Simi Valley
$118,750 – $285,000 | Ventura County
Stockton
$106,250 – $255,000 | San Joaquin County
Visalia
$93,750 – $225,000 | Tulare County
Beverly Hills
$162,500 – $390,000 | Los Angeles County
Woodland Hills
$131,250 – $315,000 | Los Angeles County
San Marcos
$118,750 – $285,000 | San Diego County

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