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California contractor license
L & M Mechanical Inc
L & M Mechanical Inc of Chatsworth holds California license 672198 (C20 Warm-Air Heating, Ventilating and Air-Conditioning, C38 Refrigeration). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Mar 31, 2028.
Licensed 33 years, longer than 82% of 35 active Chatsworth HVAC contractors.
Active
L & M Mechanical Inc, Chatsworth
- License
- 672198
- Class
- C20 Warm-Air Heating, Ventilating and Air-Conditioning; C38 Refrigeration
- Expires
- Mar 31, 2028
- Bond
- $25,000
- Workers' comp
- Insured to Feb 1, 2027
CSLB file dated Oct 30, 2026
From the CSLB file dated Oct 30, 2026. Not a consumer report; check the board before you hire.
Has the board taken action on this license?
None in the CSLB file dated Oct 30, 2026. Confirm with the board: CSLB license check
What bond, insurance and workers' comp are on file?
- Bond
- $25,000Merchants Bonding Company (Mutual), from Apr 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredOmaha National Casualty Company, from Feb 1, 2026, to Feb 1, 2027
Who is on this license?
- Responsible managing officer
- Roger H. MamigonianSince Jun 1, 1993
What work does this license cover?
Issued Jun 1, 1993. Inactive Jul 1, 1995 to Aug 14, 2003. Reissued Mar 17, 2008.
Which other Chatsworth businesses hold C20 Warm-Air Heating, Ventilating and Air-Conditioning?
- A/C CareLicensed since 1987
- All Temperatures Controlled IncLicensed since 1992
- Sigmon E C IncLicensed since 1994
- T X V Heating And Air Conditioning IncLicensed since 2008
- A O L Heating & Air IncLicensed since 2009
What should you check before hiring?
What to ask before you hire
- Get the license number in writing. The name on the license should match the name on your contract and invoice.
- Check the class covers the job. A license for one trade doesn't cover another. California license classes
- Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
- Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. An exemption on file means the contractor told the CSLB it has no employees.
- Put it in a written contract: license number, price, start date and payment schedule. Check the license again on the day you sign.
If the license is lapsed
- Don't sign or pay a deposit until the CSLB shows the license active again.
- Ask the contractor why. For a bond or insurance lapse, ask for proof that the new bond or policy was filed with the CSLB, then check again.
- If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
- Check another contractor. California license lookup
Sources
- CSLB License Master (cslb.ca.gov, Oct 30, 2026)
- Contractors State License Board (CSLB)