El Monte, Los Angeles County

Room Addition Cost in El Monte, CA

El Monte remodeling costs are 10% belowthe California state average. Here's what a typical room addition costs in El Monte in 2026, based on a 300 sqf project.

Budget
$54,000
$180/sqf
Mid-Range
$94,500
$315/sqf
High-End
$148,500
$495/sqf

Cost breakdown

Foundation & Framing
30%$28,350
Roofing & Exterior
15%$14,175
Mechanical (HVAC, Electrical)
15%$14,175
Interior Finishes
20%$18,900
Windows & Doors
10%$9,450
Permits & Engineering
10%$9,450

Breakdown based on mid-range estimate of $94,500

Typical Timeline
3-6 months
Permits Required

Building permit, structural engineering, possibly zoning approval.

Remodeling in El Monte

San Gabriel Valley city with some of the most affordable remodeling costs in LA County. Growing investment in home improvement as property values rise.

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 El Monte

Kitchen Remodel
$27,000 – $81,000
Bathroom Remodel
$13,500 – $43,200
ADU / Guest House
$112,500 – $270,000
Roof Replacement
$11,250 – $33,750
Exterior Paint
$4,500 – $15,750
Whole House Remodel
$243,000 – $810,000

Room Addition cost in other California cities

Redondo Beach
$66,000 – $181,500 | Los Angeles County
Del Mar
$72,000 – $198,000 | San Diego County
Modesto
$48,000 – $132,000 | Stanislaus County
Riverside
$51,000 – $140,250 | Riverside County
Thousand Oaks
$63,000 – $173,250 | Ventura County
La Jolla
$72,000 – $198,000 | San Diego County
Visalia
$45,000 – $123,750 | Tulare County
Escondido
$54,000 – $148,500 | San Diego County

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