Updated: Dec 03, 2025
Location and Projects
Address
P O BOX 603, San Anselmo, CA, 94979
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Marin Mechanical
Marin Mechanical at P O BOX 603, San Anselmo, CA 94979, held a HVAC/Mechanical Contractor license (#603975) with the California contractors license board with an expiration date of 10-31-2000. We last verified the license was expired on 12-02-2025.
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 project planner to be easily matched to qualified, licensed professionals in your area.
Marin Mechanical Contact Information
Phone Number: (415) 485-4472
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Address: P O BOX 603, San Anselmo, CA 94979
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Marin Mechanical San Anselmo
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Marin Mechanical, click “This is My Business” to update your information.
Activity
|
2 projects
|
2025 |
Our building permit records indicate that Marin Mechanical has worked on at least
2.0 projects over the past year.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
< $5k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Marin mechanical to install navien tank-less water heater
Valuation:
$3,000
Permit #:
P2508-033
Status:
final
Fee:
$145
Permit Type:
New tank-less wat...
Building Type:
N/A
Replace broken small water heater
Valuation:
N/A
Permit #:
P2025-0081
Status:
issued
Fee:
$170
Permit Type:
Residential
Building Type:
N/A
Machine drain addition floor drain and service sink addition one new bathroom remodel two existing bathrooms addition washing
Valuation:
N/A
Permit #:
340756
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Rough in and finish of 4 new bathrooms
Valuation:
N/A
Permit #:
313490
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition 1 toilet and 1 lavy. relocate 2 toiles 2 sinks and 2 washing machine hook up
Valuation:
N/A
Permit #:
330651
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replumbing the building two inspectio nto amendment to permit #352628
Valuation:
N/A
Permit #:
360906
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Amendment to permit no. 340451 additional water and sewer permit fee
Valuation:
N/A
Permit #:
341315
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
All new plumbing and fixtures. amendment to permit no.340450
Valuation:
N/A
Permit #:
347957
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
7 floor drains 8 floor sinks - amendment to permit #313490
Valuation:
N/A
Permit #:
317267
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Gas inspection. amendmen to permit no. 313490 & 317267
Valuation:
N/A
Permit #:
317645
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Relocating toilets and sinks. adding new sinks
Valuation:
N/A
Permit #:
340451
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel 2 toilets lav 1 urinal 2 bathrooms
Valuation:
N/A
Permit #:
315753
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel 3 baths 2 kitchens washing machine
Valuation:
N/A
Permit #:
343629
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
All new plumbing and fixtures
Valuation:
N/A
Permit #:
340450
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Relocate water closet
Valuation:
N/A
Permit #:
342979
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replumbing the building
Valuation:
N/A
Permit #:
352627
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
For final inspection
Valuation:
N/A
Permit #:
350204
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Marin Mechanical Reviews
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Recent Buildzoom Projects
Marin Mechanical License info
Inactive License
| License # | 603975 |
| Status | Inactive |
| State | California |
| Type | Plumbing |
| Business Type | Sole Ownership |
- 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 Marin Mechanical 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 Marin Mechanical, click “This is My Business” to update your information.
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $10,000 |
12
Permits
- Building permit records show that Marin Mechanical has worked on 12 permitted projects.
Marin Mechanical Employees
MS
Mark Stephen Silvia
Sole Owner