Hamm L M INC, B General Building Contractor in San Gabriel, CA
Hamm L M INC operating as a corporation holds an active California contractor license (CSLB #171598), valid through Oct 31, 2027. First issued in 1957, the license has been on the CSLB roster for 69 years. It carries 3 CSLB classifications: B General Building Contractor, C-20 HVAC Contractor, and C-36 Plumbing Contractor. Records show an active surety bond on file with Hudson Insurance Company and active workers' compensation coverage from State Compensation Insurance Fund. The business is based in San Gabriel, in Los Angeles County, California.
San Gabriel, CA 91776
- License Number
- 171598
- Issued
- Nov 13, 1957
- Status
- CLEAR
- Expires
- Oct 31, 2027
- Entity
- Corporation
- Surety
- Hudson Insurance Company
- Bond Number
- 30031103
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- State Compensation Insurance Fund
- Policy Number
- 9385109
- Effective
- Aug 5, 2025
- Expires
- Aug 5, 2026
This contractor is verified, with no adverse conditions in the current CSLB record.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Hamm L M INC licensed in California?
Yes. Hamm L M INC holds California Contractors State License Board license number 171598, which is active and in good standing. The license was first issued on November 13, 1957. It is valid through October 31, 2027.
What does Hamm L M INC specialize in?
Hamm L M INC is licensed for 3 CSLB classifications: B General Building Contractor, C-20 HVAC Contractor, and C-36 Plumbing Contractor.
Where is Hamm L M INC headquartered?
Hamm L M INC is headquartered at 425 So California Street Ste C, San Gabriel, CA 91776, in Los Angeles County, California.
Does Hamm L M INC have an active surety bond on file with CSLB?
Yes. Hamm L M INC has an active California contractor surety bond filed with Hudson Insurance Company.
Does Hamm L M INC carry workers' compensation coverage?
Yes. Hamm L M INC carries active workers' compensation coverage through State Compensation Insurance Fund.
How do I verify Hamm L M INC's contractor license?
You can verify Hamm L M INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=171598.
- License issuedNov 13, 1957
- Bond activeJan 1, 2023
- WC coverage startsAug 5, 2025
- WC expiresAug 5, 2026
- License expiresOct 31, 2027
- General Installation Company#151839Gardena·B General Building Contractor
- Kahn Air Conditioning INC#206552Van Nuys·B General Building Contractor
- Darrow Heating and Air Conditioning CORP#114301North Hollywood·B General Building Contractor
- Acco Engineered Systems#120696Pasadena·A General Engineering Contractor
- Smith Roy E Plumbing CO INC#179873Los Angeles·C-16 Fire Protection Contractor
- Brandel Don Plumbing INC#176778Paramount·A General Engineering Contractor
- Stewart R O Plumbing & Heating CO#186403Los Angeles·C-20 HVAC Contractor
- Heflin & E Paul Plumbing INC#202227Los Angeles·C-20 HVAC Contractor
Working a California job with Hamm L M INC, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.
- California preliminary notice deadline calculatorFind your 20-day deadline and the lien rights at risk.
- Do I need a preliminary notice in California?Answer a few questions to see if the 20-day notice applies.
- Did I lose my California lien rights?Check whether your mechanics lien window has passed.
- Unpaid construction invoice in CaliforniaYour options and deadlines for collecting on a California job.
Own Hamm L M INC? Claim or correct this profile