License is active
Source: Contractors State License Board (CSLB)
Licensed
Current and in good standing
Bonded
$25,000 surety bond
Insured
Workers' comp coverage on file
Clean record
No complaints or disciplinary actions
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DUFFIN CONSTRUCTION
- License Number
- 760636
- State
- California
- Status
- active
- Business Type
- Sole Owner
- Address
- P O BOX 210639 SAN FRANCISCO, CA, 94121 San Francisco County
- Phone
- (415) 340 3044
License Dates
Issued
03/19/1999
Expires
03/31/2027
Expires in 12 months
CSLB Last Updated
02/25/2026
License Classifications
Personnel & Officers
DUFFIN STEPHEN MALACHY
Sole Owner
Contractor Bond
Amount: $25,000
Company: HUDSON INSURANCE COMPANY
Bond #30139933
Effective: 03/29/2024
Workers' Compensation
Carrier: STATE COMPENSATION INSURANCE FUND
Policy #9127048
Effective: 03/12/2023
Expires: 03/12/2027
CSLB designation: Workers' Compensation Insurance
Complaints & Disciplinary History
This reflects CSLB's bulk license data. For detailed complaint history including pending investigations, check the official CSLB record.
Building Permits
Source: LA City Open Data (LADBS)
otc alterations permit
639 34th Av, 94121
revision to pa 2021-0914-8427 (s1) sheet s2.1 and s3.4 to change perimeter foundtion to to retaining wall foundation
$24,500
2023-04-21
additions alterations or repairs
321 Coleridge St, 94110
in response to complaint # 201988371. replace lower rear site retaining wall. install soldier piles with tiebacks and concrete walls.
$80,000
2022-09-08
additions alterations or repairs
639 34th Av, 94121
3rd story addition w/ roof deck. remodel entire (e) 2nd-story home. kitchen, baths, living spaces, stairs, hvac, electrical, plumbing and facade improvements.
$500,000
2022-08-19
otc alterations permit
48 Clarendon Av, 94114
to obtain a final inspection for work approved under previous permit pa 201610217640. all work is complete.
$1
2022-01-25
otc alterations permit
88 Entrada Ct, 94127
demo of interior wall b/w kitchen and family room. add new stairs b/w kitchen and family room. create trash enclosure at extg garage doors. new concrete footings for opening b/w kitchen and family and
$50,000
2021-09-03
otc alterations permit
887 28th Av, 94121
infill existing property line window in sunroom with 1-hour rated construction. (e) window was not used for light/ vent/ escape/ rescue. window at rear. not visible from street.
$1,000
2021-05-20
otc alterations permit
65 Almaden Ct, 94118
revision to pa #201801168631. remove (e) n.g. furnace and water heater and install new combo hydronic system. heating is underfloor application.
$10,000
2021-05-13
otc alterations permit
887 28th Av, 94121
1/f: interior non-compliance stair replacement in kind. 2/f: raise floor partially under the (e) vanity countertop at the bathroom to improve head clearance for (e) non-compliance interior stairway. i
$20,000
2021-05-04
otc alterations permit
88 Entrada Ct, 94127
remove approx 350 sf of stucco at side and rear of house/repair damaged sheeting as needed. install 10 new lowein wood aluminum clad windows in kind same size and locatoin at side & rear of building
$80,000
2020-12-08
otc alterations permit
16 Entrada Ct, 94127
voluntary strengthening of basement. repair cracked stucco and repair damaged wood sheathing at front & 2 sides of building, approx 400 sf total. upgrade electrical service. install new water service.
$45,000
2020-09-14
Showing 10 of 98 permits
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