Cornerstone Construction Solutions Inc
Solar installer working in Los Angeles. Licensed since 2014.
- License active
- Workers' comp on file
11 jobs on Los Angeles permits, 2024 to 2026: 10 solar installations, 1 remodel. 283rd most solar system permits of 561 contractors in Los Angeles.
What the public records show
From the state's license records and the city's permits, one question at a time.
| Question | Records show | Mark |
|---|---|---|
| Licensed? | License 994232, active in the state's records on Sep 23, 2026General building, electrical, heating and air, plumbingNo complaints or citations on the board's public record. | Checks out |
| Workers' comp? | Workers' comp policy on file with the stateThis covers their crew if someone is hurt. It is not insurance for your home. | On file |
| In business? | Licensed since 2014 | |
| Jobs on record | 11 jobs on Los Angeles permits, 2024 to 2026: 10 solar installations, 1 remodel283rd most solar system permits of 561 licensed contractors in Los Angeles. That counts jobs, not quality.Our Los Angeles permit records cover June 2023 to September 2026. |
Records: the state license board and City of Los Angeles permits.
State license board record
Last checked Oct 4, 2026. This may have changed. Check it on CSLB.
No complaints or citations on the board's public record.
Source: California Contractors State License Board, checked Oct 4, 2026. Look up license 994232 on CSLB
Cost and timing
Solar in Los Angeles: $18,000 to $40,000
Half of 3,193 installs from January 2021 to December 2023 cost an amount in this range.
How to read this range
These are prices homeowners paid, as installers reported them to state programs. Lawrence Berkeley National Laboratory collects them in its Tracking the Sun data. A quarter paid less than this range, and a quarter paid more. The prices are before the federal tax credit.
Permit timeline
Across Los Angeles, a solar system permit stays open about about 8 months, from permit to final inspection
This is not how long the crew works at your home: most of it is waiting for the inspection. Ask them how many days the work takes. Waiting for the permit adds about 62 days. How long solar system jobs take.
Track record
8 jobs in the last 12 months, up from 2 the year before
Where they work most
- 913446 jobs
- 913522 jobs
- 915052 jobs
- 900251 job
Jobs by kind of work
Latest jobs
Permit values are what the contractor wrote on the permit form, not what the owner paid.
A row marked ×2 or more stands for that many similar jobs on one day in one ZIP code.
| Date | Work | ZIP | On the permit form |
|---|---|---|---|
| Apr 14, 2026 | Solar | 91344 | not stated |
| Apr 10, 2026 | Solar (×2, same day) | 91352 | not stated |
| Apr 7, 2026 | Solar, 2.4 kW[ePlan] Roof mounted solar PV1 system | 91344 | not stated |
| Jan 15, 2026 | Solar (×2, same day) | 91505 | not stated |
| Nov 20, 2025 | Solar (×2, same day), 2.61 kW[ePlan] New roof mounted solar PV1 system rated 2.61 kW DC /1.92 kW AC with (6) modules… | 91344 | not stated |
| Aug 1, 2025 | Solar[ePlan] new PV System roof mount for an ADU:(6) Modules of 400 W, Total: 2.4 kWdc(6) Inverter of… | 91344 | not stated |
| Jul 1, 2025 | Solar[ePlan] new PV System roof mount:(6) Modules of 400 W, Total: 2.4 kWdc(6) Inverter of 330 W, Total:… | 91344 | not stated |
| Feb 2, 2024 | RemodelInterior remodel to ex | 90025 | $2,000 |
What to ask before you hire
About Cornerstone Construction Solutions Inc
- Ask what the warranty covers and for how long, in writing.
Worth asking any solar installer
- Can you show me proof of liability insurance and your bond?
- What size system, which panels and inverter, and what will it make in a year?
- Is my roof good for 25 more years, and what if it needs work first?
- Who handles the permit and the utility's approval to turn it on?
Get a quote from Cornerstone Construction Solutions Inc
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Your job room keeps the request, your photos and every reply in one place, with an assistant that checks prices against city permits. Keep its link: it is the key to your job.
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