Home / License lookup / California / Hamilton Bill Roofing Inc
California contractor license
Hamilton Bill Roofing Inc
Hamilton Bill Roofing Inc of Campbell holds California license 644400 (C39 Roofing). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Apr 30, 2028.
Licensed 34 years, longer than 87% of 3,891 active California roofing contractors.
Active
Hamilton Bill Roofing Inc, Campbell
- License
- 644400
- Class
- C39 Roofing
- Expires
- Apr 30, 2028
- Bond
- $25,000
- Workers' comp
- Insured to May 1, 2027
CSLB file dated Oct 31, 2026
From the CSLB file dated Oct 31, 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 31, 2026. Confirm with the board: CSLB license check
What bond, insurance and workers' comp are on file?
- Bond
- $25,000Nationwide Mutual Insurance Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredCypress Insurance Company, from May 1, 2026, to May 1, 2027
Who is on this license?
- Officer
- Mary V. HamiltonSince Apr 3, 2006
- Responsible managing officer, CEO and president
- William J. HamiltonSince May 8, 1992
What work does this license cover?
Issued May 8, 1992. Reissued Apr 3, 2006.
Which other Campbell businesses hold C39 Roofing?
- Davco Waterproofing Services IncLicensed since 1989
- Western Roofing SystemsLicensed since 1993
- Above All Roofing Solutions IncLicensed since 2001
- Environmental Roofing & Waterproofing IncLicensed since 2001
- California Roof Runners IncLicensed since 2026
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 31, 2026)
- Contractors State License Board (CSLB)