Solar installer
Efficient Builders
Based at Los Angeles, CA 90018. Installed solar on 54 homes since 2023 in California. Installing since 2022. Latest install on record: February 2026.
- Homes since 2023
- 54
- Median price
- $6.32/W
- Typical system
- 6.9 kW
- Leased or PPA
- 0%
Price
Homes that bought their system from Efficient Builders paid a median $6.32/W installed, and the middle half paid $3.30/W–$8.48/W (13 systems since 2023, before incentives). That's $2.25 a watt above the California median of $4.07/W.
70% of its recent systems included a battery.
Where it installs
Counties with homes it installed since 2023, busiest first.