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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J GERSTENKORN BUILDERS
- License Number
- 1064688
- State
- California
- Status
- active
- Business Type
- Corporation
- Address
- 668 RAILROD AVE UNIT C SOUTH SAN FRANCISCO, CA, 94080 San Mateo County
- Phone
- (415) 405 6716
License Dates
Issued
03/25/2020
Expires
03/31/2028
Expires in 24 months
CSLB Last Updated
03/06/2026
License Classifications
Personnel & Officers
GERSTENKORN JOHN
Responsible Managing Officer/Chief Executive Officer/President
Contractor Bond
Amount: $25,000
Company: WESTERN SURETY COMPANY
Bond #6767363
Effective: 02/18/2026
Workers' Compensation
Carrier: AMERICAN CASUALTY COMPANY OF READING PA
Policy #WC8035664513
Effective: 09/15/2025
Expires: 09/15/2026
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
665 Connecticut St, 94107
reduction of work scope under pa 202308164545: reroof willnot be done.
$1
2025-07-21
otc alterations permit
665 Connecticut St, 94107
replace belly band trim in front of building in kind.
$1,000
2025-07-15
otc alterations permit
665 Connecticut St, 94107
reroofing and non-structural deck repair
$10,000
2023-08-16
otc alterations permit
457 Nevada St, 94110
basic kitchen remodel in-kind, add 1 gfci to counter area, add recessed lighting in kitchen & living area , replace angle stops p-trap, add floor tile, all work in-kind.
$50,000
2023-04-05
otc alterations permit
767 Silver Av, 94134
replace front facing stucco- repair dryrot in kind. replace front entry stairs in kind. replace (2) front windows in kind. 7 risers being removed and replaced. reference p/a # 202210023615.
$2,000
2022-10-28
otc alterations permit
767 Silver Av, 94134
bathroom remodel/swap toiler vanity/add one recessed light/ replace tub. replace plumbing fixtures. repair dry rot exterior stairs under 50%. replace in kind
$20,000
2022-10-03
otc alterations permit
272 Flood Av, 94112
garage level - legalize storage w/ bathroom. comply w/ complaint# 200292535.
$27,985
2022-09-08
otc alterations permit
379 Day St, 94131
remove wall between dining and livning. add beam and footings. replace extg rear bedroom windows to new vinyle 3x4 single hung. to comply with complaint 202294470
$20,000
2022-09-02
otc alterations permit
379 Day St, 94131
in kind replacement of (3) windows (windows in rear of building/not visible from street). replacement of the tile and shower pan in kind. replace old shower drain in kind.
$20,000
2022-09-01
otc alterations permit
673 Shotwell St, 94110
demo existing stairs / frame in walls / construct circular stairs metal / install concrete pad / build two decks. remove (e) wooden stairs, deck and construct new circular metal stairs with two light
$30,000
2021-09-21
Showing 10 of 11 permits
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