Torrance, Los Angeles County

Room Addition Cost in Torrance, CA

Torrance remodeling costs are nearthe California state average. Here's what a typical room addition costs in Torrance in 2026, based on a 300 sqf project.

Budget
$60,000
$200/sqf
Mid-Range
$105,000
$350/sqf
High-End
$165,000
$550/sqf

Cost breakdown

Foundation & Framing
30%$31,500
Roofing & Exterior
15%$15,750
Mechanical (HVAC, Electrical)
15%$15,750
Interior Finishes
20%$21,000
Windows & Doors
10%$10,500
Permits & Engineering
10%$10,500

Breakdown based on mid-range estimate of $105,000

Typical Timeline
3-6 months
Permits Required

Building permit, structural engineering, possibly zoning approval.

Remodeling in Torrance

South Bay location with a strong mix of contractors serving the area. Post-war homes dominate, and kitchen/bathroom remodels are the most common projects.

A room addition adds square footage and value to your home. Costs depend on whether it's a simple bump-out, a second story, or a full wing addition with plumbing.

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Other projects in Torrance

Kitchen Remodel
$30,000 – $90,000
Bathroom Remodel
$15,000 – $48,000
ADU / Guest House
$125,000 – $300,000
Roof Replacement
$12,500 – $37,500
Exterior Paint
$5,000 – $17,500
Whole House Remodel
$270,000 – $900,000

Room Addition cost in other California cities

Palm Springs
$57,000 – $156,750 | Riverside County
Milpitas
$69,000 – $189,750 | Santa Clara County
Corte Madera
$72,000 – $198,000 | Marin County
Morgan Hill
$66,000 – $181,500 | Santa Clara County
Sunnyvale
$75,000 – $206,250 | Santa Clara County
Fremont
$69,000 – $189,750 | Alameda County
San Jose
$75,000 – $206,250 | Santa Clara County
Sacramento
$54,000 – $148,500 | Sacramento County

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