Cornerstone Environmental Contractors Inc
Report verdict
Licensed & active (expires 2028-05-31) · No board discipline flag found in covered sources · 15 permits on file (Los Angeles, San Diego)
88/100 HomeProFax Score — public-record factors only, not a rating of workmanship. How the score works Full report
The state board is the authority. A flag is a prompt to read the board record, not a verdict. Verify license status with the issuing board before you hire. See methodology and disclaimer & corrections.
What this report checks
Score breakdown
| Factor | Points | Why |
|---|---|---|
| License status | 35/35 | Active license on file with a state board |
| Discipline & legal flags | 20/20 | No disciplinary flag on board record |
| Permit history | 20/20 | 15 permits on file |
| Reviews (BBB + HomeProFax) | 13/25 | No BBB rating on file and no approved HomeProFax reviews yet (neutral). External ratings are linked below, not stored |
A simple, transparent sum of public-record factors. How the score works. Not a rating of workmanship.
Source data as of: Report rebuilt from source files on 2026-10-19 · CSLB bond/workers' comp as of 2026-10-14 · most recent permit on file: 2019-12-13.
What we checked
| License | Checked | CA Corporation #722253 · active |
| Bond | Checked | $25,000 with AMERICAN CONTRACTORS INDEMNITY COMPANY · as of 2026-10-14 |
| Workers' comp | Checked | Workers' Compensation Insurance (OAK RIVER INSURANCE COMPANY) · as of 2026-10-14 |
| Years licensed | Checked | Licensed since 1996 |
| Business registration | Not available in CA | State business registry not loaded yet |
| Permits | Checked | 15 permits on record |
| Discipline | Checked | none on record |
| OSHA | Not checked yet | OSHA records not checked yet |
| Reviews & outside links | Not checked yet | No review lookup run yet |
| Contractor-provided | Not checked yet | Nothing provided by the contractor yet |
Public records as of their source dates. Board status is shown as reported by the board. Not a guarantee. Ask the contractor for their verified HomeProFax report.
Licenses
Licensed since 1996 (earliest original issue date on these state license records; not a business start date)
| License # | Type | Status | Issued | Expires | Source |
|---|---|---|---|---|---|
| CA 722253 | Corporation (A| C10| D21| HAZ) Workers' comp: Workers' Compensation Insurance (OAK RIVER INSURANCE COMPANY); Contractor bond: $25000 (AMERICAN CONTRACTORS INDEMNITY COMPANY) | clear | 1996-05-02 | 2028-05-31 | State board |
Bond & workers' comp
| Contractor bond | $25,000 · AMERICAN CONTRACTORS INDEMNITY COMPANY · effective 2023-01-01 |
|---|---|
| Workers' comp | Workers' Compensation Insurance · OAK RIVER INSURANCE COMPANY · effective 2026-03-29 · expires 2027-03-29 |
Source: CSLB Public Data Portal (License Master), as of 2026-10-14. Verify current bond and insurance with CSLB and the insurer before you hire.
Building permits
| Date | Permit | Type | Address | Value |
|---|---|---|---|---|
| 2019-12-13 | 19020-10000-02422 | Nonbldg-New - Commercial | 9730 INDEPENDENCE AVE | $130,000 |
| 2019-11-21 | 19030-30000-05164 | Grading - Commercial | 5650 CENTINELA AVE | $325 |
| 2019-11-18 | 19041-10001-32864 | Electrical - Commercial | 9730 INDEPENDENCE AVE | — |
| 2019-08-21 | 19041-10000-32864 | Electrical - Commercial | 20901 SUPERIOR ST | — |
| 2017-09-13 | 201611223306 | additions alterations or repairs | 2 Richardson Av | $125,000 |
| 2017-05-31 | 17041-10000-18009 | Electrical - Commercial | 2041 BEVERLY BLVD | — |
| 2016-10-12 | 16029-10000-00034 | Nonbldg-Alter/Repair - Commercial | 3505 SEPULVEDA BLVD | $42,154 |
| 2015-07-29 | 15041-10000-24340 | Electrical - Commercial | 105 AVENUE 52 | — |
| 2013-09-23 | 201208288426 | additions alterations or repairs | 2 Richardson Av | $61,185 |
| 2013-01-09 | 201301097578 | otc alterations permit | 444 De Haro St | $21,000 |
| 2012-10-17 | 201207054156 | otc alterations permit | 401 Treat Av | $170,000 |
| 2012-08-14 | 201208107087 | otc alterations permit | 1175 Fell St | $25,000 |
| 2008 | PDS2008-1021-20080142 | — | — | — |
| 2005-10-28 | 200412211891 | additions alterations or repairs | 1200 Geneva Av | $70,800 |
| 2002-06-24 | 200110181142 | additions alterations or repairs | 1200 Geneva Av | $60,000 |
Source: City of Los Angeles Open Data (LADBS Building Permits), DataSF (Building Permits + Building Permits Contacts), County of San Diego Open Data (building permits)
Permit data: City of Los Angeles Open Data (LADBS Building Permits), licensed under CC BY 4.0. HomeProFax matched permits to licensed contractors; data modified from the original. Not endorsed by the City of Los Angeles. Los Angeles permits shown run through May 2023.
Source: DataSF, City and County of San Francisco (Building Permits; Building Permits Contacts).
Discipline, complaints & legal
No board discipline or complaints found in our current sources. Federal court search (CourtListener): no state-consistent possible match in our last sample run, or not yet run for this contractor.
Around the web
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Reviews
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Cornerstone Environmental Contractors Inc · General Engineering Contractor
Concord, CA
License on file: CA ••••2253
Sources for this report
- CA license board
- City of Los Angeles Open Data (LADBS Building Permits)
- County of San Diego Open Data (building permits)
- DataSF (Building Permits + Building Permits Contacts)
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