Solar installer

South West Builders

Name: South West Builders
Address: Chatsworth, CA, 91311, US
Telephone: (855) 808-8887

Based at Chatsworth, CA 91311. Installed solar on 1,264 homes since 2023 in California. Installing since 2016. Latest install on record: August 2026.

(855) 808-8887

Homes since 2023: 1,264
Median price: $7.29/W
Typical system: 5.8 kW
Leased or PPA: 31%

Price

Homes that bought their system from South West Builders paid a median $7.29/W installed, and the middle half paid $4.72/W–$10.39/W (427 systems since 2023, before incentives). That's $3.22 a watt above the California median of $4.07/W.

56% of its recent systems included a battery.

Where it installs

Counties with homes it installed since 2023, busiest first.

Los Angeles County, CA · 838 San Bernardino County, CA · 151 Orange County, CA · 73 Riverside County, CA · 52 Ventura County, CA · 48 Alameda County, CA · 30 Santa Clara County, CA · 25 Kern County, CA · 21 Contra Costa County, CA · 14 Solano County, CA · 4 Napa County, CA · 2 Humboldt County, CA · 1 Imperial County, CA · 1 Marin County, CA · 1 San Mateo County, CA · 1 Santa Barbara County, CA · 1

By state

State	Homes	Median
California	1,264	$7.29/W

Homes installed since 2023.

Installed prices and installers from public installation records: Lawrence Berkeley National Laboratory’s Tracking the Sun (systems installed through 2025) and state program files from California, New York, New Jersey, Connecticut, Illinois and Oregon, which run into 2026. Prices are in dollars per watt of panel capacity (DC), before rebates and tax credits, for homes that bought their system; leased systems and systems with batteries are left out.