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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HEALTHY BUILDING SCIENCE INC
- License Number
- 1046058
- State
- California
- Status
- active
- Business Type
- Corporation
- Address
- 369-B 3RD ST #521 SAN RAFAEL, CA, 94901 Marin County
- Phone
- (415) 785 7986
License Dates
Issued
10/23/2018
Expires
10/31/2026
Expires in 7 months
CSLB Last Updated
12/01/2025
License Classifications
Personnel & Officers
STADTNER ALEXANDER NACHUM
Responsible Managing Officer/Chief Executive Officer/President
Contractor Bond
Amount: $25,000
Company: AMERICAN CONTRACTORS INDEMNITY COMPANY
Bond #100410577
Effective: 01/01/2023
Workers' Compensation
Carrier: BENCHMARK INSURANCE COMPANY
Policy #99WC0000366201
Effective: 11/30/2025
Expires: 11/30/2026
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)
additions alterations or repairs
1347 40th Av, 94122
convert existing conditioned space on street level to adu.
$185,000
otc alterations permit
2277 33rd Av, 94116
replacement of install furnace. remove & replace air supply + intake grills, seal all boots to ducting - replace partial crushed duct. install new plenum + air filter bex
$14,205
2025-12-18
otc alterations permit
1539 Sanchez St, 94131
sidind and trim replacement of north and east facade (backyard). prime and paint not visible from street. entire wall at north and east. replace/repair in kind.
$60,000
2022-07-01
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