Updated: Feb 05, 2026
Location and Projects
Address
P O BOX 2026, Mariposa, CA, 95338
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WILLIAM SMITH PLUMBING
WILLIAM SMITH PLUMBING, Mariposa, Po Box 2026, Mariposa, CA (Owned by: William James Smith Jr) holds a Plumbing license according to the California license board.
Their BuildZoom score of 98 ranks in the top 16% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring WILLIAM SMITH PLUMBING, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
WILLIAM SMITH PLUMBING Services
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WILLIAM SMITH PLUMBING Contact Information
Phone Number: (209) 742-7198
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Address: P O BOX 2026, Mariposa, CA 95338
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Building Permits by WILLIAM SMITH PLUMBING
This is a sample of this contractor's permits. Click here to access their complete permit history.
Digital-torrey pinesd; building mechanical electrical plumbing permit for an existing building. new professional office. new non-bearing metal stud partitions doors cabinetry and finishes suspended grid and gypsum board soffit ceilings ducting to service suite configuration lighting and power to service suite configuration and plumbing services to service suite break room. co-1-2 n-ap... see more
Valuation:
$346,838
Permit #:
2492962
Status:
complete
Fee:
$5,569
Permit Type:
Add/alt tenant im...
Building Type:
N/A
University: building plumbing electrical mechanical permits for the proposed tenant improvements within the (e)cold shell demised suite. scope to include (n)non-bearing partitions doors cabinetry finishes ceiling assemblies power and lighting ducting and plumbing to service a single use toilet facility and workroom hand sink. co-1-2. cpioz-a transit priority areas geo haz 25/32/52 ear... see more
Valuation:
$275,888
Permit #:
2541177
Status:
complete
Fee:
$4,552
Permit Type:
Add/alt tenant im...
Building Type:
N/A
University building mechanical electrical & plumbing permits for tenant improvement of the (e)office building suite #c130. scope to include:(n)interior nonbearing partitions (n)doors & cabinetry suspended ceiling power and lighting ducting and (n)plumbing services for handwashing sink. co-1-2 cpoz-a transit priority geo haz 25/32/52 earthquake fault category 12
Valuation:
$153,296
Permit #:
2567045
Status:
complete
Fee:
$3,510
Permit Type:
Add/alt tenant im...
Building Type:
N/A
University. building electrical mechanical and plumbing permits for remodel to extg medical office. work to include offices break room waiting room reception area partitions to create cold shell space (ste 215); ductwork lighting power and piping. co-1-2. pcd 89-0652. community plan implementation a. transit priority area. geo haz 12/25/32/52
Valuation:
N/A
Permit #:
2325895
Status:
complete
Fee:
N/A
Permit Type:
Add/alt tenant im...
Building Type:
N/A
University. building electrical mechanical and plumbing permits for remodel to extg medical office. work to include offices break room waiting room reception area partitions to create cold shell space (ste 215); ductwork lighting power and piping. co-1-2. pcd 89-0652. community plan implementation a. transit priority area. geo haz 12/25/32/52
Valuation:
N/A
Permit #:
2325894
Status:
complete
Fee:
N/A
Permit Type:
Add/alt tenant im...
Building Type:
N/A
University. building electrical mechanical and plumbing permits for remodel to extg medical office. work to include offices break room waiting room reception area partitions to create cold shell space (ste 215); ductwork lighting power and piping. co-1-2. pcd 89-0652. community plan implementation a. transit priority area. geo haz 12/25/32/52
Valuation:
$316,136
Permit #:
2325694
Status:
complete
Fee:
N/A
Permit Type:
Add/alt tenant im...
Building Type:
N/A
University. building electrical mechanical and plumbing permits for remodel to extg medical office. work to include offices break room waiting room reception area partitions to create cold shell space (ste 215); ductwork lighting power and piping. co-1-2. pcd 89-0652. community plan implementation a. transit priority area. geo haz 12/25/32/52
Valuation:
N/A
Permit #:
2325893
Status:
complete
Fee:
N/A
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Reroof permit to overlay 1 layer of comparable with new 30 year comparable for an existing dwelling. permit is good for 1 inspection. additional inspections are $125.78 each. final inspection required
Valuation:
$8,000
Permit #:
12000946
Status:
complete
Fee:
$192
Permit Type:
N/A
Building Type:
N/A
Residential-tearoff entire roof and reshingle with 30 year asphalt shingles
Valuation:
$8,625
Permit #:
RERR2014-00771
Status:
complete
Fee:
$597
Permit Type:
N/A
Building Type:
N/A
Const npdes insp-grading for barn
Valuation:
$0
Permit #:
BMP160029
Status:
APPLIED
Fee:
$1,160
Permit Type:
N/A
Building Type:
N/A
Const chg to project 498787 approval 1747366 new chiminey with fire box. delta 1
Valuation:
N/A
Permit #:
2044302
Status:
issued
Fee:
$346
Permit Type:
N/A
Building Type:
N/A
T i to exist'g. medical office total of 4025 sq ft w water demand new interior walls new ceiling new lighting plumbing
Valuation:
$116,725
Permit #:
148251
Status:
complete
Fee:
$1,661
Permit Type:
Add/alt tenant im...
Building Type:
N/A
### scanned to tidemark ### install new 40-gallon gas water heater in same garage location
Valuation:
$1,200
Permit #:
BLD2011-00349
Status:
final
Fee:
$168
Permit Type:
N/A
Building Type:
N/A
Interior remodel to existing office space.new walls lighting, plumbing and ceiling
Valuation:
$32,944
Permit #:
26329
Status:
complete
Fee:
$2,538
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Tenant improvement new walls lighting, ducting, plumbing and ceiling
Valuation:
$52,258
Permit #:
26678
Status:
complete
Fee:
$1,055
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Void per homeowner-replace front entry door patio slider door and kitchen window
Valuation:
$6,085
Permit #:
D021053
Status:
withdrawn
Fee:
$116
Permit Type:
N/A
Building Type:
N/A
Sale of publication - alameda point public review draft eir appendices and cd rom
Valuation:
$80
Permit #:
MR01-0579
Status:
COLLECTED
Fee:
$80
Permit Type:
N/A
Building Type:
N/A
Area 13 residence storage barn
Valuation:
$129,000
Permit #:
CBN2005-02702
Status:
Finaled
Fee:
$1,683
Permit Type:
N/A
Building Type:
N/A
Area 6 remodel of kitchen countertops, window, electrical and some plumbing
Valuation:
$0
Permit #:
CBR2007-00585
Status:
Finaled
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Outdoor gas fireplace
Valuation:
N/A
Permit #:
BLD13-5573
Status:
final
Fee:
$78
Permit Type:
N/A
Building Type:
N/A
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Verified License
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WILLIAM SMITH PLUMBING License info
Verified License
| License # | 919750 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for WILLIAM SMITH PLUMBING at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
98
BuildZoom Score
Bonded
| Bonded Agent | Business Alliance Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Hartford Underwriters Insurance Company |
28
Permits
- Building permit records show that WILLIAM SMITH PLUMBING has worked on 28 permitted projects.
WILLIAM SMITH PLUMBING Employees
WJ
William James Smith Jr
Owner