Updated: Jul 02, 2026
Location and Projects
Address
1217 W San Marcos Blvd, San Marcos, CA, 92078
Use our bidding system to
request a quote
Alt Plumbing
Alt Plumbing, 1217 W San Marcos Blvd, San Marcos, CA (Employee: John Alt) holds a Plumbing license according to the California license board.
Their BuildZoom score of 104 ranks in the top 9% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Alt Plumbing, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Alt Plumbing Services
Start a project today:
Alt Plumbing Contact Information
Phone Number: (760) 801-2520
Address: 1217 W San Marcos Blvd, San Marcos, CA 92078
This is a sample of this contractor's permits. Click here to access their complete permit history.
4.3kw roof mounted photovoltaic sys. 12 modules & microinverters
Valuation:
$12,000
Permit #:
WEB22-0147
Status:
final
Fee:
$436
Permit Type:
Simple
Building Type:
N/A
Trade permit for residential alteration & repair - mep mechanical | electrical | plumbing
2024-01-30
Emergency gas line repair (sdge lockout)
Valuation:
N/A
Permit #:
MEPR-029764-2024
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Emergency gas repair
Valuation:
$200
Permit #:
B21-02674
Status:
final
Fee:
N/A
Permit Type:
M.e.p
Building Type:
N/A
Commercial alteration or addition - plan check-permit
2025-01-25
Cross street: description of work: replace gas line to pool heater for lake san marcos hoa
Valuation:
N/A
Permit #:
PDS2022-COMALT-000035
Status:
complete
Fee:
$304
Permit Type:
N/A
Building Type:
N/A
Install tankless water heater
Valuation:
N/A
Permit #:
B15-0158
Status:
final
Fee:
$67
Permit Type:
N/A
Building Type:
N/A
Gas test for meter release
Valuation:
$500
Permit #:
BLDG22-0158
Status:
final
Fee:
$212
Permit Type:
Simple
Building Type:
N/A
Trade permit for residential alteration & repair - mep mechanical | electrical | plumbing
2020-12-16
Gas leak repair
Valuation:
N/A
Permit #:
MEPR-013738-2020
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water line repair
Valuation:
$1,500
Permit #:
B15-01216
Status:
FINALED
Fee:
N/A
Permit Type:
M.e.p
Building Type:
N/A
Laundry facilities - (2) wh c/o same location
Valuation:
N/A
Permit #:
BLDG11-0234
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
N/A
Alt Plumbing Reviews
BuildZoom hasn't received any reviews for Alt Plumbing. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Hiring a contractor?
Verified License
BuildZoom confirmed this contractor's license
Alt Plumbing License info
Verified License
| License # | 842880 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Alt Plumbing at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
104
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
9
Permits
- Building permit records show that Alt Plumbing has worked on 9 permitted projects.
Alt Plumbing Employees
JA
John Alt
Sole Owner