Updated: Jun 06, 2026
Location and Projects
Address
969 FOLSOM ST, San Francisco, CA, 94107
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Columbia Mechanical Contractors Inc
Columbia Mechanical Contractors Inc at 969 FOLSOM ST, San Francisco, CA 94107, held a HVAC/Mechanical Contractor license (#273358) with the California contractors license board with an expiration date of 11-01-2014. We last verified the license was inactive on 06-05-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 336,931 California contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Columbia Mechanical Contractors Inc Services
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Columbia Mechanical Contractors Inc Contact Information
Phone Number: (415) 398-5202
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Address: 969 FOLSOM ST, San Francisco, CA 94107
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Building Permits by Columbia Mechanical Contractors Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Work category: 5p; cmc no. 7311. install two new sinks and faucets in women's restrooms of the 7th floor (trim only). install two new sinks and faucets in men's restrooms of the 7th floor (trim only)
Valuation:
$0
Permit #:
PW20131009048
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; install two kitchen sinks on 28th floor. install new toilet room on 28th floor. new fixtures in core tr on 28th. minor plumbing and new fixtures in core toilet room on 29th floor
Valuation:
$0
Permit #:
PW20120906369
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
4 floors: basement 1st 3rd and 6th floor: renovations. mens & womens toilet rooms (2 per floor). basement: replace water closet first: full renovation: 3&6: relocate fixtures for ada
Valuation:
$0
Permit #:
PP20120724258
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
4th floor - addition ceiling supply diffusers for the new layout. addition one vav box to the (e) air conditioning system. addition osa & return air dampers to an existing supply air fan. tenant improvement. appl #201008249427.note: existing fans exceed 2000cfm and must shut down per one of the required methods. field verify
Valuation:
$17,500
Permit #:
201011154984
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Work category: 5p; install two kitchen sinks on 28th floor. install new toilet room on 28th floor. new fixtures in core tr on 28th. minor plumbing and new fixtures in core toilet room on 29th floor
Valuation:
N/A
Permit #:
PW20120906369
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work type: not listed; change out existing lavs & install new high low drinking fountain (talbot's ) cmc 6447 also change toilet tank from left hand to right hand old permit #473169 out standing from 11-7-05 general left town new building permit on jobsite
Valuation:
$0
Permit #:
PW20080521804
Status:
COMPLETED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
9th floor: one new heat pump for the communicaiton room seven new vav boxes three of them had heating coils one new exhaust fan for the transformer room addition & relocate supply & return grilles
Valuation:
$125,000
Permit #:
200712079934
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Work category: 5p; install 8 lavatories 4 showers 1 mop sink 1 urinal 3 water closets and 1 water heater for fitness center. cmc# 7345
Valuation:
$0
Permit #:
PW20130726180
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; the following work done on the 16th floor ----> a) install 4 new lav faucets. b) replace 5(e) wc. c) move 2 in wall carriers.cmc# 7319
Valuation:
$0
Permit #:
PW20130213642
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; cmc#7329. new toilet in men's room on 3rd and 4th floors. relocate (e) urinal in men's room 3rd and 4th floors
Valuation:
$0
Permit #:
PW20130813585
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; install new plumbing for a bakery deli. install six floor drains three hand sinks one dishwasher one grease trap one mop sink and two toilet rooms; cmc #7194
Valuation:
$0
Permit #:
PW20111111697
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; cmc#7373. install new dcv on fire service. remove 1-6 febco 806yd sn# b3265 and 1-3/4 febco 805y sn# s9817
Valuation:
$0
Permit #:
PW20130919468
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
3rd floor - replace one broken supply fan with a new one & one vav box & outside air ductwork to the (e) air conditioning unit. addition supply air diffusers for the enw layout. tenant improvement. appl #201008249427
Valuation:
$17,500
Permit #:
201011154980
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Work category: 5p; install waste vent and cold water riser with features on 17 floors. connect (e) piping to new risers on 15 floors. cmc# 7324
Valuation:
$0
Permit #:
PW20130318389
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; cmc# 7374 new break room trim at existing rough plumbing. install one in wall box for water cooler
Valuation:
$0
Permit #:
PW20130923577
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; install 3 new kitchen sinks in the 2nd floor. install 2 kitchen sinks in the 7th floor. cmc# 7369
Valuation:
$0
Permit #:
PW20131021329
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; cmc #7377 install one kitchen sink one mop sink two lavatories two toilets and two floor drains
Valuation:
$0
Permit #:
PW20131122283
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
4 floors: basement 1st 3rd and 6th floor: renovations. mens & womens toilet rooms (2 per floor). basement: replace water closet first: full renovation: 3&6: relocate fixtures for ada
Valuation:
N/A
Permit #:
PP20120724258
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; new break room trim on (e) rough--->2816 2807 & 2931. new df on 28th & 29th. cmc# 7364
Valuation:
$0
Permit #:
PW20130910248
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; cmc# 45128. install two earth quake valves on gas main for 875 howard and 899 howard
Valuation:
$0
Permit #:
PW20130919491
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Columbia Mechanical Contractors Inc License info
Inactive License
| License # | 273358 |
| Status | Inactive |
| State | California |
| Type | Fire Protection, Warm Air Heating, Ventilating And Air Conditioning, Plumbing |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Columbia Mechanical Contractors Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
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- *No active license on file. If you are Columbia Mechanical Contractors Inc, click “This is My Business” to update your information.
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $12,500 |
Insured
| Workers Comp Provider | Cypress Insurance Company |
484
Permits
- Building permit records show that Columbia Mechanical Contractors Inc has worked on 484 permitted projects.
Columbia Mechanical Contractors Inc Employees
DH
Dorothy May Howerton
Rmo/Ceo/Pres
RD
Richard W Dimuzio
Rmo
VM
Valerie Rose Miller
Rmo/Ceo/Pres
VH
Vincil Henry Howerton
Officer