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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MASON MECHANICAL SERVICES
- License Number
- 692130
- State
- California
- Status
- active
- Business Type
- Sole Owner
- Address
- 2 COMMERCIAL BLVD SUITE 204 NOVATO, CA, 94949 Marin County
- Phone
- (415) 350 1371
License Dates
Issued
07/18/1994
Expires
07/31/2026
Expires in 4 months — verify renewal before long contracts
CSLB Last Updated
01/02/2026
License Classifications
Personnel & Officers
MASON ROBERT PETER
Sole Owner
Contractor Bond
Amount: $25,000
Company: AMERICAN CONTRACTORS INDEMNITY COMPANY
Bond #SC634695
Effective: 01/01/2023
Workers' Compensation
Carrier: AMERICAN CASUALTY COMPANY OF READING PA
Policy #WC835744782
Effective: 01/01/2026
Expires: 01/01/2027
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
550 15th St, 94103
install 10 feet access ladder to side of bldg.
otc alterations permit
1800 Union St, 94123
install central heating & cooling with duct work. heat pump. t.i. pa# 201408012784
$12,000
2014-09-04
otc alterations permit
1843 Jefferson St, 94123
replace 2 extg central heating system and ventilation ducts for baths and kitchen. furnace is 97% afue condensing unit in hall wall closet with proper clearances 2' pvc flue terminate 4' from property
$15,239
2011-07-12
otc alterations permit
800 Van Ness Av, 94109
replace (e) duct to new plans w/ ventilation @ 2nd. flr. ref. appl.#200901270923.
$5,900
2010-01-11
otc alterations permit
3233 Sacramento St, 94115
install new central heat and ventilation throughtout building; cat kennel on ground floor per previous permits.
$40,000
2007-07-02
otc alterations permit
842 Valencia St, 94110
install new h.v.a.c for ground floor restaurant only.
$13,300
2005-04-21
otc alterations permit
2563 San Bruno Av, 94134
central heating and ventulation mechanical for app #200204174140 r-3
$19,000
2002-12-11
additions alterations or repairs
121 Capp St, 94110
install 4 heating & air conditioning units on rooftop
$15,000
1998-09-30
Verify this record on the official state licensing board
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California licensing guide →Data sourced from official state licensing board records. Always confirm critical information directly with the state board.
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