Warren Construction
Based in Cupertino
workers’ comp insured · licensed 49 yrs
Active · B · #338439 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
General contractor Cupertino, CA Corporation
Build 33 Inc.
Active License #1051529 B General Building · Cupertino, CA
- CSLB license age
- 7 yrs 6 mo
- Expires
- Mar 31, 2027
- Bond
- $25,000 bond
- American Contractors Indemnity Company
- Workers' comp
- State Compensation Insurance Fund
Policy ends Dec 14, 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
- Corporation
- Issued
- Mar 20, 2019 CSLB license age: 7 yrs 6 mo as of the file date
- Contractor bond
- $25,000 bond American Contractors Indemnity Company, since Aug 7, 2026
- Workers' comp
- State Compensation Insurance Fund Dec 14, 2019 to Dec 14, 2026 · WC file dated Oct 17, 2026
- CSLB last updated this record
- Aug 11, 2026
Personnel of record
- Senquan ZHOU Responsible Managing Officer/Chief Executive Officer/President
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.
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.
San Jose permits (matched by business name)
1permits in 24 months
- Residential
- 0
- Commercial
- 1
- Latest issued
- Oct 2, 2026
- Median permit value
- $1,000
Permits by declared value (1 with a value)
- Under $50k 1
- $50k to $250k 0
- $250k to $1M 0
- Over $1M 0
Latest permits (public permit numbers)
- Condo / Additions / Alterations · $1,000 · Oct 2, 2026 Permit #2026-139973-MF
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
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 in Cupertino
Ranked by the published scoring rules on the methodology page.
Craftsmen's Guild Inc
Based in Cupertino
workers’ comp insured · licensed 39 yrs
Active · B · #507159 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Donald C Benson
Based in Cupertino
workers’ comp insured · licensed 37 yrs
Active · B · #558002 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Questions about Build 33 Inc.
Is Build 33 Inc. licensed?
Yes. CSLB lists license #1051529 (B, General Building) as active in its file dated Oct 16, 2026. It was first issued Mar 20, 2019 and expires Mar 31, 2027. Check the live record on CSLB before you sign.
What is the CSLB license number for Build 33 Inc.?
CSLB lists Build 33 Inc. under license #1051529, class B, in Cupertino, CA.
Is Build 33 Inc. bonded and insured?
CSLB shows a $25,000 contractor bond with American Contractors Indemnity Company and workers' comp coverage through State Compensation Insurance Fund (policy to Dec 14, 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.
Who owns Build 33 Inc.?
CSLB lists Senquan ZHOU (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.
Where can I see CSLB complaint and legal-action records for #1051529?
On license #1051529's page on CSLB. It lists any complaint disclosures and legal actions CSLB publishes for the license.
Where can I read reviews of Build 33 Inc.?
We don't host reviews. The links under the license details search for Build 33 in Cupertino 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.