Where South West Builders Ranks
Position among installers of home solar in each city, by installations in the most recent three years of records, and how South West Builders compares with the local market there.
Its strongest market is Los Angeles, where it accounts for 11% of the home systems with a known installer.
| City | Rank | Installations | Local share | Price vs. local median | Leased (city average) |
|---|---|---|---|---|---|
| Los Angeles, California | #2 | 99 | 11% | 54% higher | 31% (37%) |
| Inglewood, California | #3 | 24 | 6% | — | 8% (38%) |
| El Monte, California | #4 | 20 | 4% | — | 40% (42%) |
| Norwalk, California | #9 | 23 | 2% | — | 44% (42%) |
| Downey, California | #10 | 21 | 3% | — | 48% (33%) |
What South West Builders Installs
- Typical system size
- 5.8 kW
- Leased or on a PPA
- 31%
- Installed with a battery
- 56%
Sells both owned systems and leases or PPAs.
Panel brands
- Trina Solar (23%)
- Znshine Pv-tech (22%)
- Mission Solar Energy (10%)
Inverter brands
- Enphase Energy (69%)
- SolarEdge (21%)
- Altenergy Power System (8%)
South West Builders Prices Compared With the State
Median price per watt of systems the homeowner bought outright, before incentives.
| State | South West Builders | State median | Difference |
|---|---|---|---|
| California (2023–2025) | $7.07/W | $4.25/W | 66% higher |
Home Installations per Year
Records for the most recent year can be incomplete while utilities finish reporting.
Where South West Builders Installs Most
| City | Installations (2023–2025) |
|---|---|
| Los Angeles, CA | 99 |
| Long Beach, CA | 48 |
| Lancaster, CA | 39 |
| Palmdale, CA | 35 |
| Fontana, CA | 31 |
| Compton, CA | 26 |
| Whittier, CA | 26 |
| San Jose, CA | 25 |
| Inglewood, CA | 24 |
| Norwalk, CA | 23 |
| Carson, CA | 22 |
| Downey, CA | 21 |
| Ontario, CA | 21 |
| Pomona, CA | 21 |
| El Monte, CA | 20 |
Specialist Rankings
Where South West Builders ranks among the companies that install the most systems with a battery or with a given inverter brand.
- Solar Battery Installers in Los Angeles, CA: #2 (70 systems)
- Solar Battery Installers in Downey, CA: #5 (16 systems)
- Solar Battery Installers in Pomona, CA: #6 (13 systems)
- Solar Battery Installers in Norwalk, CA: #8 (19 systems)
- Solar Battery Installers in Ontario, CA: #9 (16 systems)
Other Top Installers in Los Angeles
The companies ranked next to South West Builders in Los Angeles, by home installations in 2023–2025.
| Company | Installations | Median price | Leased / PPA |
|---|---|---|---|
| Sunrun | 187 | $4.83/W | 86% |
| Lajoma Construction | 30 | $2.81/W | 0% |
| Bright Planet Solar | 27 | — | 100% |
| Better Earth | 26 | $5.57/W | 35% |
| Tesla | 26 | $4.38/W | 0% |
| Skyline Smart Energy | 24 | $5.64/W | 13% |
South West Builders: Common Questions
Is South West Builders still in business?
South West Builders was still installing home solar in 2025, the latest year in the public records we use, and it is not on our list of installers that closed or went bankrupt. Records lag a year or two, so confirm before you sign: its California license (CSLB #1012298) shows whether it is active, and recent Google reviews show whether it is still answering customers.
Does South West Builders lease solar panels or sell them?
31% of its home systems in 2023–2025 were leased or on a power purchase agreement, and 69% were bought by the homeowner. Sells both owned systems and leases or PPAs.
What solar panels and inverters does South West Builders install?
Panels: Trina Solar (23%), Znshine Pv-tech (22%) and Mission Solar Energy (10%). Inverters: Enphase Energy (69%), SolarEdge (21%) and Altenergy Power System (8%). Shares of its home systems in 2023–2025 with a known brand.
How much does South West Builders charge for solar?
In California (2023–2025), homeowners who bought a system from South West Builders paid a median of $7.07/W before incentives — 66% higher than the state median of $4.25/W. For its typical 5.8 kW system, that is about $41,500. By city: 54% higher than the Los Angeles median.
Does South West Builders install solar batteries?
56% of its home systems in 2023–2025 included a battery. It ranks among the top battery installers in Los Angeles, CA, Downey, CA, Pomona, CA.
Where does South West Builders install solar?
Most of its recent work is in Los Angeles (99), Long Beach (48), Lancaster (39), Palmdale (35) and Fontana (31). It is ranked in 5 cities in California.
Before You Sign With South West Builders
- California license: CSLB #1012298 (B, C-7, C-10), issued 03/22/2016, registered to SOUTH WEST BUILDERS in Simi Valley. It appears in the state's list of active licenses. Check its current status on the CSLB site.
- Reviews and contact details: call (855) 808-8887 (the number on its license) or see South West Builders on Google Maps, where recent reviews tell you more than any ranking.
- Quotes: get at least three, and compare price per watt, equipment brands and the workmanship warranty — not just the monthly payment.
Compare South West Builders with other installers
The Los Angeles ranking puts South West Builders next to the other companies that install the most there, with each one's price and leasing share.
Top solar installers in Los Angeles →Where These Numbers Come From
Source: Tracking the Sun, Lawrence Berkeley National Laboratory (2026 edition), licensed CC BY 4.0. In New York and New Jersey, recent years come from the state programs' own records (NYSERDA and New Jersey's Clean Energy Program). Company names were standardized and closures checked against news reports by Solar Power Fix. More about our methodology.