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California contractor license
Duisenberg Construction Inc
Duisenberg Construction Inc of San Anselmo holds California license 860588 (B General Building). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Jul 31, 2028.
Licensed 21 years, longer than 63% of 47 active San Anselmo general contractors.
Active
Duisenberg Construction Inc, San Anselmo
- License
- 860588
- Class
- B General Building
- Expires
- Jul 31, 2028
- Bond
- $25,000
- Workers' comp
- Insured to Apr 13, 2027
CSLB file dated Nov 1, 2026
From the CSLB file dated Nov 1, 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 Nov 1, 2026. Confirm with the board: CSLB license check
What bond, insurance and workers' comp are on file?
- Bond
- $25,000American Contractors Indemnity Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredEverest Premier Insurance Company, from Apr 13, 2026, to Apr 13, 2027
Who is on this license?
- Officer
- Erik D. DuisenbergSince Jul 21, 2020
- Responsible managing officer, CEO and president
- Brandon M. DuisenbergSince Jun 18, 2005
What work does this license cover?
Issued Jun 18, 2005. Reissued Jul 21, 2020.
Which other San Anselmo businesses hold B General Building?
- Powerhouse Building IncLicensed since 2001
- Bergquist BuildersLicensed since 2004
- Selvig Development IncLicensed since 2006
- Structural Concepts Design Build CorpLicensed since 2006
- Sidney Builders IncLicensed since 2006
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, Nov 1, 2026)
- Contractors State License Board (CSLB)