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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SINGULAR BUILDERS
- License Number
- 1104356
- State
- California
- Status
- active
- Business Type
- Corporation
- Address
- 101 MONGOMERY ST FL 20 SAN FRANCISCO, CA, 94104 San Francisco County
- Phone
- (650) 799 4636
License Dates
Issued
05/04/2023
Expires
05/31/2027
Expires in 14 months
CSLB Last Updated
12/01/2025
License Classifications
Personnel & Officers
GHERARDINI JEFFREY ALLEN
Responsible Managing Officer/Chief Executive Officer/President
TZORTZIS MICHAEL PETER
Responsible Managing Officer
Contractor Bond
Amount: $25,000
Company: MERCHANTS BONDING COMPANY (MUTUAL)
Bond #100064741
Effective: 04/25/2023
Workers' Compensation
Carrier: TRAVELERS PROPERTY CASUALTY COMPANY OF AMERICA
Policy #UBB25056272526G
Effective: 10/01/2025
Expires: 06/13/2026
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
190 Post St, 94108
installation of a construction barricade at the (e) store front interior scope of work under pa# 2024-0725-7271
additions alterations or repairs
3900 03rd St, 94124
residential- commencement of work not started under previously approved permit application number pa# 2019-0422-8620
$45,000
otc alterations permit
3900 03rd St, 94124
commercial - commencement of work not started under previously approved permit application number pa# 2019-0422-8642
additions alterations or repairs
655 Brotherhood Wy, 94132
construction of 101sf gatehouse. addition to basement story of (e) clssrm bldg.site improvemvent of 2 (e) outdoor playyards.renovation of classrooom space on g/f of (e) gym into full kitchen,renov fac
$5,000,000
otc alterations permit
1045 Sansome St, 94111
interior tenant improvement of level 3 at 1045 sansome st. includes new non-load bearing partitions and floor finishes. no changes to existing exterior facade, elevator, or exit stairs. hvac, electric
$1,115,126
2026-03-19
otc alterations permit
3900 03rd St, 94124
construct a wood deck and trash enclosure for the use of the building and tenants, location at rear of building
$107,000
2025-11-13
additions alterations or repairs
3900 03rd St, 94124
priority: soft story upgrade per city of san francisco mandatory soft story program (mssp)-19 sros
$90,000
2025-07-22
otc alterations permit
120 Maiden Ln, 94108
(n) soffit above main entrance service door and side window replacement of (e) first floor glazing with (n) security glazing. (n) secuirty shutter at all first floor glazing. construction of 1 (n) fac
$120,000
2025-07-18
additions alterations or repairs
3900 03rd St, 94124
renov. of shared bathrooms @ lvls 2&3. convert (e) g.f. retail space to support services for (p) boarding rms abv. legalize 1 sleeping room (307) for a total of 20 sleeping rms. energy upgrades incl:
$1,365,000
2025-07-01
otc alterations permit
350 Masonic Av, 94118
to continue the work authorized by pa # 202405011192 which was erroneously finalized and closed by sfdbi field inspectors. no additional construction for administrative purposes only.
$1
2025-06-30
Showing 10 of 45 permits
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