Updated: Nov 09, 2025
Location and Projects
Address
P O BOX 478, Sonoma, CA, 95476
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Bay Hydronic Plumber
Bay Hydronic Inc at P O BOX 478, Sonoma, CA 95476, held a Plumber license (#278694) with the California contractors license board with an expiration date of 05-31-2023. We last verified the license was expired on 11-08-2025.
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.
Bay Hydronic Inc Services
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Bay Hydronic Inc Contact Information
Phone Number: (707) 938-8231
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Address: P O BOX 478, Sonoma, CA 95476
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Remove and replace radiant heating boiler with new boiler in same location in the mechanical room. like for like replacement. boiler is same capacity. 95% efficient
Valuation:
$19,000
Permit #:
BLD2021-01178
Status:
complete
Fee:
$310
Permit Type:
Repair
Building Type:
N/A
Work category: 8p; this regards an installation that was performed in 2012 under permit pw20110608912. it was never finaled. we wish to dio that now
Valuation:
N/A
Permit #:
PW20190913893
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
C/o water heater and boiler
Valuation:
N/A
Permit #:
P2111-004
Status:
final
Fee:
$125
Permit Type:
Alter-sfd
Building Type:
N/A
Work category: 2pa; radiant heat installation
Valuation:
N/A
Permit #:
PW20110608912
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; boiler replacement
Valuation:
N/A
Permit #:
PW20171127589
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Renewal of permit pw20161101691
Valuation:
N/A
Permit #:
PP20180418675
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; adding on to existing system. boiler and first two floors of radiant previously installed by other contractor. at this time do not know if was inspected after previous work was done
Valuation:
$0
Permit #:
PW20160613175
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; adding on to existing system. boiler and first two floors of radiant previously installed by other contractor. at this time do not know if was inspected after previous work was done
Valuation:
N/A
Permit #:
PW20160613175
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; replace existing boiler and indirect tank addition to existing radiant heating system
Valuation:
$0
Permit #:
PW20150616124
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 2m ; installed new boiler and 80 gallon indirect tank
Valuation:
$0
Permit #:
PMW20150924472
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; boiler with indirect installation and radiant tubing
Valuation:
$0
Permit #:
PW20160122478
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; radiant heat system installations: 2 boilers
Valuation:
$0
Permit #:
PW20160202746
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; boiler install & hydronic system installation
Valuation:
$0
Permit #:
PW20151028487
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace two (2) boilers and two (2) water heaters indirect
Valuation:
N/A
Permit #:
B2017-03731
Status:
final
Fee:
$462
Permit Type:
Alteration
Building Type:
N/A
Work category: 8p; replace existing boiler and indirect tank addition to existing radiant heating system
Valuation:
N/A
Permit #:
PW20150616124
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
(rm) - mechanical - 1 & 2 unit residential (building)
2018-02-06
Replace boiler for existing hydronic system serving single family dwelling
Valuation:
N/A
Permit #:
RM1800271
Status:
final
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; extend existing radiant heat system
Valuation:
$0
Permit #:
PW20151023373
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace water heater with boiler and install recirculation pump in garage
Valuation:
$13,500
Permit #:
BIPL14-006928
Status:
final
Fee:
$142
Permit Type:
N/A
Building Type:
N/A
Replace radiant heating boiler with new boiler in same location. boiler is same capacity
Valuation:
$19,000
Permit #:
BPA2021-01117
Status:
filed
Fee:
N/A
Permit Type:
Repair
Building Type:
N/A
Work category: 8p; new radiant heating installation
Valuation:
$0
Permit #:
PW20160818875
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Bay Hydronic Inc License info
Inactive License
| License # | 278694 |
| 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 Bay Hydronic 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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BuildZoom Score
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- *No active license on file. If you are Bay Hydronic 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 | Pacific Compensation Insurance Company |
153
Permits
- Building permit records show that Bay Hydronic Inc has worked on 153 permitted projects.
Bay Hydronic Inc Employees
WC
William Raymond Clinton
Sole Owner