Alexander Company
Legal name: J J J & K Inc · Based in Burlingame
72 permits · median permit value $12k (SF permits)
72 residential permits · licensed 34 yrs
Active · B · #642553 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
C-17 Glazing
General contractor Burlingame, CA Sole Owner
William O'Brien & Sons
Active License #292934 B General Building · Burlingame, CA
- CSLB license age
- 52 yrs 6 mo
- Expires
- Feb 28, 2027
- Bond
- $25,000 bond
- Atlantic Specialty Insurance Company
- Workers' comp
- State Compensation Insurance Fund
Policy ends Nov 28, 2026. Ask for the renewal certificate if work runs past it.
CSLB records dated Oct 16, 2026 checked Oct 18, 2026 Verify live on CSLB
License record
- Status
- Active CSLB status code: CLEAR
- Class
- B · General Building
- Business type
- Sole Owner
- Issued
- Apr 11, 1974 CSLB license age: 52 yrs 6 mo as of the file date
- Contractor bond
- $25,000 bond Atlantic Specialty Insurance Company, since Feb 24, 2026
- Workers' comp
- State Compensation Insurance Fund Nov 28, 1997 to Nov 28, 2026 · WC file dated Oct 17, 2026
- CSLB last updated this record
- Feb 25, 2026
Owner of record
CSLB lists William O'Brien & Sons as the sole owner of license #292934.
What the permit record shows
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).
Complaints and legal actions
CSLB lists complaint and legal-action disclosures on the license's page.
Check complaints on CSLBBefore you sign
- Down payment. On a home improvement contract it can't exceed $1,000 or 10% of the price, whichever is less. B&P 7159.5
- What this class covers. A B contractor's prime contract needs 2 or more unrelated trades (B&P 7057). B covers additions and structural work; a B-2 doesn't (CSLB class B-2).
Other licensed general contractors near Burlingame
Ranked by the published scoring rules on the methodology page.
Jin Qing Construction Corp
Based in Burlingame
5 kitchen, 4 bath, 1 whole house · median permit value $14k · latest: kitchen, Aug 2026 (SF permits)
14 residential permits · licensed 9 yrs
Active · B · #1030182 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
True North Kitchen and Bath
Legal name: Norcal Remodeling Group LLC · Based in Burlingame
11 bath, 4 kitchen · median permit value $20k · latest: kitchen, Aug 2026 (SF permits)
12 residential permits · licensed 7 yrs
Active · B · #1046117 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
D-06D-12 Synthetic Products
Questions about William O'Brien & Sons
Is William O'Brien & Sons licensed?
Yes. CSLB lists license #292934 (B, General Building) as active in its file dated Oct 16, 2026. It was first issued Apr 11, 1974 and expires Feb 28, 2027. Check the live record on CSLB before you sign.
What is the CSLB license number for William O'Brien & Sons?
CSLB lists William O'Brien & Sons under license #292934, class B, in Burlingame, CA.
Is William O'Brien & Sons bonded and insured?
CSLB shows a $25,000 contractor bond with Atlantic Specialty Insurance Company and workers' comp coverage through State Compensation Insurance Fund (policy to Nov 28, 2026). Those are the bond and workers' comp records in CSLB's file dated Oct 16, 2026. Ask for its certificate of general liability insurance.
Where can I see CSLB complaint and legal-action records for #292934?
On license #292934's page on CSLB. It lists any complaint disclosures and legal actions CSLB publishes for the license.
Where can I read reviews of William O'Brien & Sons?
We don't host reviews. The links under the license details search for William O'Brien & Sons in Burlingame on Yelp, Google, Houzz, BBB, Thumbtack and Angi, so you read them at the source.
Confirm or correct this page
For the business owner. Everything above comes from CSLB and city permit files. Send a correction and we check it against the source.