Solar installer

Cornerstone Construction Amp Roofing

Name: Cornerstone Construction Amp Roofing
Address: Stanton, CA, 90680, US
Telephone: (714) 206-4320

Based at Stanton, CA 90680. Installed solar on 21 homes since 2023 in California. Installing since 2022. Latest install on record: May 2026.

(714) 206-4320

Homes since 2023: 21
Median price: $3.60/W
Typical system: 4.0 kW
Leased or PPA: 0%

Price

Homes that bought their system from Cornerstone Construction Amp Roofing paid a median $3.60/W installed, and the middle half paid $3.42/W–$3.75/W (19 systems since 2023, before incentives). That's $0.47 a watt below the California median of $4.07/W.

Where it installs

Counties with homes it installed since 2023, busiest first.

Orange County, CA · 21

By state

State	Homes	Median
California	21	$3.60/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.