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Hathaway Dinwiddie Construction Company
Hathaway Dinwiddie Construction Company of San Francisco holds California license 729664 (A General Engineering, B General Building). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Nov 30, 2026.
Licensed 29 years, longer than 86% of 1,412 active San Francisco general contractors.
Active
- License ends Nov 30, 2026 (29 days)
Hathaway Dinwiddie Construction Company, San Francisco
- License
- 729664
- Class
- A General Engineering; B General Building
- Expires
- Nov 30, 2026
- Bond
- $25,000
- Workers' comp
- Insured to Oct 1, 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
- $25,000Travelers Casualty And Surety Company Of America, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredAmerican Guarantee And Liability Insurance Company, from Oct 1, 2026, to Oct 1, 2027
Who is on this license?
- Officer
- Paul G. CoskoSince Nov 15, 1996
- Officer
- Edward D. ConlonSince Mar 30, 2007
- Officer
- Corrina W. ChinSince Jul 14, 2026
- Responsible managing officer, CEO and president
- Kevin J. O'RiordanSince Dec 12, 2023
- Responsible managing officer
- John V. CowlesSince Dec 28, 2023
What work does this license cover?
Issued Nov 15, 1996.
Which other San Francisco businesses hold A General Engineering?
- Pca Consulting Group IncLicensed since 1992
- Add A Garage IncLicensed since 1992
- LC General Engineering & Construction IncLicensed since 1997
- S2 / H Construction GroupLicensed since 1999
- Roebuck Construction IncLicensed since 2001
General Contractors in San FranciscoCalifornia general contractors
What should you check before hiring?
What to ask before you hire
- Ask whether it has been renewed. Something on this license ends within 60 days. Check again before you pay a deposit.
- 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)