General contractor San Jose, CA Corporation
Active License #290418 B General Building, A General Engineering · San Jose, 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.
No permits matched this business in the last 24 months in the San Francisco data (matched by license number) or the San Jose data (matched by business name).
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 San Jose
29 new homes, 1 whole house · median permit value $316k (San Jose permits (name match))
44 residential permits · licensed 3 yrs
Active · B · #1098660 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
License renewal due Nov 30, 2026.
Based in San Jose
7 bath, 5 kitchen, 1 whole house · median permit value $50k · latest: bath, Aug 2026 (San Jose permits (name match))
21 residential permits · licensed 19 yrs
Active · B · #887389 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
License renewal due Nov 30, 2026.
Based in San Jose
10 bath, 8 kitchen · median permit value $4k · latest: kitchen, Oct 2026 (San Jose permits (name match))
14 residential permits · licensed 10 yrs
Active · B · #1009320 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Workers' comp policy ends Oct 28, 2026. Ask for the renewal certificate.
Yes. CSLB lists license #290418 (B, General Building; A, General Engineering) as active in its file dated Oct 16, 2026. It was first issued Jan 24, 1974 and expires Jun 30, 2027. Check the live record on CSLB before you sign.
CSLB lists Blach Construction Company under license #290418, class B, A, in San Jose, CA.
CSLB shows a $25,000 contractor bond with Liberty Mutual Insurance Company and workers' comp coverage through Zurich American Insurance Company (policy to Apr 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 Michael John Blach (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 #290418'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 Blach Construction Company in San Jose 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.