Updated: Oct 25, 2025
Location and Projects
Address
828 RUTH AVENUE, Belmont, CA, 94002
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Kohn Plumbing Inc
Kohn Plumbing Inc at 828 RUTH AVENUE, Belmont, CA 94002, held a Plumber license (#885720) with the California contractors license board with an expiration date of 10-31-2008. We last verified the license was expired on 10-24-2025.
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 bidding system to be easily matched to qualified, licensed professionals in your area.
Kohn Plumbing Inc Services
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Kohn Plumbing Inc Contact Information
Phone Number: (650) 787-0407
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Address: 828 RUTH AVENUE, Belmont, CA 94002
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Modify existing kitchen area: addition 3 floor sinks 4 hand sinks 1 double compartment
Valuation:
$0
Permit #:
PP20150729677
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Modify (e) plumbing system. convert (e) bathroom to unisex
Valuation:
N/A
Permit #:
PP20150630901
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Modify existing kitchen area: addition 3 floor sinks 4 hand sinks 1 double compartment
Valuation:
N/A
Permit #:
PP20150729677
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building 80/90 first floor : bathroom sink replacement drinking fountain
Valuation:
$0
Permit #:
PP20120217563
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Plumbing demolish roughin finish of bathroom and condensate lines
Valuation:
$0
Permit #:
PP20120119816
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building 80/90 exam room 130: replacement sink replacement
Valuation:
$0
Permit #:
PP20120217564
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install new shower valves and new drains for showers
Valuation:
$0
Permit #:
PP20120419988
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building 80/90 exam room 130: replacement sink replacement
Valuation:
N/A
Permit #:
PP20120217564
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Additional inspection. amendment to permit no. 325951
Valuation:
N/A
Permit #:
334700
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove and replace plumbing fixtures
Valuation:
N/A
Permit #:
443189
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water gas sewer
Valuation:
N/A
Permit #:
325951
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition plumbing for bld1992-092522
Valuation:
N/A
Permit #:
BLD1992-093493
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building 80/90 first floor : bathroom sink replacement drinking fountain
Valuation:
N/A
Permit #:
PP20120217563
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install new shower valves and new drains for showers
Valuation:
N/A
Permit #:
PP20120419988
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Plumbing demolish roughin finish of bathroom and condensate lines
Valuation:
N/A
Permit #:
PP20120119816
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Kohn Plumbing Inc License info
Inactive License
| License # | 885720 |
| Status | Inactive |
| State | California |
| Type | Boiler, Hot Water Heating And Steam Fitting, 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 Kohn Plumbing Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 221255 |
| Status | Inactive |
| State | California |
| Type | Plumbing, Boiler, Hot Water Heating And Steam Fitting |
| 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 Kohn Plumbing Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Kohn Plumbing Inc, click “This is My Business” to update your information.
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
6
Permits
- Building permit records show that Kohn Plumbing Inc has worked on 6 permitted projects.
Kohn Plumbing Inc Employees
BK
Barry John Kohn
Sole Owner
JK
Joyce Lynn Kohn
Ceo / President