General contractor Petaluma, CA Corporation
Active License #453991 B General Building, C-9 Drywall · Petaluma, 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.
7permits in 24 months
Permit descriptions that mention: Tenant improvement (1), Retail build-out (1)
Permits by declared value (7 with a value)
Latest permits (public permit numbers)
Source: DataSF building permits, checked Oct 18, 2026
3permits in 24 months
Permit descriptions that mention: Tenant improvement (3), Retail build-out (1)
Permits by declared value (3 with a value)
Latest permits (public permit numbers)
San Jose lists the contractor by business name, not license number. A name match can miss permits filed under another spelling and can pick up a company with a similar name.
Source: City of San Jose active 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.
Legal name: Maap Corp · Based in Petaluma
16 permits · median permit value $18k (SF permits)
16 residential permits · licensed 43 yrs
Active · B · #440356 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
C-2 Insulation and AcousticalC-17 Glazing
Based in Petaluma
4 bath, 2 kitchen, 1 addition · median permit value $20k · latest: kitchen, Oct 2026 (SF permits)
9 residential permits · licensed 16 yrs
Active · B · #948190 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
License renewal due Nov 30, 2026. Workers' comp policy ends Nov 2, 2026. Ask for the renewal certificate.
Based in Petaluma
4 permits · median permit value $25k (SF permits)
4 residential permits · licensed 28 yrs
Active · B · #750768 · Bond ✓ · Workers' comp: policy ended · Verify on CSLB
Yes. CSLB lists license #453991 (B, General Building; C-9, Drywall) as active in its file dated Oct 16, 2026. It was first issued Mar 22, 1984 and expires Jan 31, 2028. Check the live record on CSLB before you sign.
CSLB lists Trainor Commercial Construction Inc under license #453991, class B, C-9, in Petaluma, CA.
CSLB shows a $25,000 contractor bond with Allegheny Casualty Company and workers' comp coverage through Sentinel Insurance Company Ltd (policy to Oct 1, 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 William James Shockey (Responsible Managing Officer/Chief Executive Officer/President) and John Grady Holmberg (Responsible Managing Officer) 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 #453991'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 Trainor Commercial Construction in Petaluma 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.