FOUR SQUARE
License
- Status
- CLEAR
- First issued
- September 21, 2009
- Expires
- September 30, 2027
- Entity
- Sole Owner
- Address of record
- 250 PARNASSUS 304, San Francisco, CA 94117
- Phone of record
- (415) 244 3407
Contractor bond
- Surety
- WESTERN SURETY COMPANY
- Bond number
- 67486498
- Amount
- $25,000
- Effective
- September 29, 2025
Workers’ compensation
This contractor has certified to the state that they have no employees, so they carry no workers’ compensation policy. The exemption covers only the license holder. If anyone else works on your project — a crew, a helper, a day laborer — they are not covered, and an injury on your property can become your liability. Ask who will physically be on site.
Are they licensed for your job?
A California contractor may only contract for work their classification covers. Pick the job and this reads the license on file against it.
Licensed to perform
A contractor may only contract for work within their classifications. See all 2,238 licensed general building contractors in San Francisco.
People on this license
| Name | Title | Since | Through |
|---|---|---|---|
| O'MAHONEY TIMOTHY DURKEE | Sole Owner | September 21, 2009 | Current |
Verified status badge
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Source: California Contractors State License Board public records. Coverage lapse is evaluated against today’s date; all other fields reflect the latest weekly CSLB file. Confirm at the CSLB’s official record before signing a contract.