General contractor Cotati, CA Corporation
Active License #337713 B General Building · Cotati, CA
CSLB records dated Oct 16, 2026 checked Oct 18, 2026 Verify live on CSLB
As listed in CSLB's personnel file dated Oct 17, 2026. Personnel of record qualify the license. The file does not show who owns the business.
We have permit records for San Francisco and San Jose only. Other Bay Area cities don't publish contractor names in a form we can read, so an empty list here says nothing about work elsewhere.
1permits in 24 months
Permits by declared value (1 with a value)
Latest permits (public permit numbers)
Source: DataSF building permits, checked Oct 18, 2026
CSLB lists complaint and legal-action disclosures on the license's page.
Check complaints on CSLBRanked by the published scoring rules on the methodology page.
Based in Cotati
1 kitchen, 1 bath · median permit value $5k · latest: kitchen, Apr 2026 (SF permits)
6 residential permits · licensed 14 yrs
Active · B · #971717 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
C-6 Cabinet, Millwork, Finish Carpentry
Based in Cotati
3 bath, 1 kitchen · median permit value $175k · latest: bath, May 2026 (SF permits)
3 residential permits · licensed 21 yrs
Active · B · #855399 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Based in Cotati
0 residential permits · licensed 45 yrs
Active · B · #407956 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Yes. CSLB lists license #337713 (B, General Building) as active in its file dated Oct 16, 2026. It was first issued Jul 1, 1977 and expires Sep 30, 2028. Check the live record on CSLB before you sign.
CSLB lists North Bay Sunspace Inc under license #337713, class B, in Cotati, CA.
CSLB shows a $25,000 contractor bond with American Contractors Indemnity Company and workers' comp coverage through Omaha National Casualty Company (policy to Jul 31, 2027). Those are the bond and workers' comp records in CSLB's file dated Oct 16, 2026. Ask for its certificate of general liability insurance.
CSLB lists Michael Earl Bertnick (Responsible Managing Officer/Chief Executive Officer/President) as personnel of record. That file names the people who qualify the license. It does not show who owns the business. CSLB lists the business type as corporation.
On license #337713's page on CSLB. It lists any complaint disclosures and legal actions CSLB publishes for the license.
We don't host reviews. The links under the license details search for North Bay Sunspace in Cotati on Yelp, Google, Houzz, BBB, Thumbtack and Angi, so you read them at the source.
For the business owner. Everything above comes from CSLB and city permit files. Send a correction and we check it against the source.