Updated: May 21, 2026
Location and Projects
Address
PO BOX 5272, Napa, CA, 94581
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Thomas Jay Ault Construction
Thomas Jay Ault, Napa, Po Box 5272, Napa, CA holds a General Building license according to the California license board.
Their BuildZoom score of 94 ranks in the top 24% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Thomas Jay Ault, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Thomas Jay Ault Services
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Thomas Jay Ault Contact Information
Phone Number: (707) 363-2151
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Address: PO BOX 5272, Napa, CA 94581
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This is a sample of this contractor's permits. Click here to access their complete permit history.
E-submittal - bathroom interior remodel down to studs within current footprint +/- 60 s.f lower floor framing at shower to allow curbless shower remove (e) gas water heater remove and replace 3 windows: 1 in bathroom 2 in adjacent bedrooms new plumbing electrical sheetrock plaster walls tile floor and fixtures
Valuation:
N/A
Permit #:
BLD19-1389
Status:
plancheck
Fee:
$1,634
Permit Type:
N/A
Building Type:
N/A
Remove tub new shower valve prep and tile new shower pan and walls in same location. modify (e) 5 wall by removing pocket door re-locate (e) electrical in adjacent wall new tile fooor in bathroom change vanity cabinet paint/sheetrock as reqd
Valuation:
$20,000
Permit #:
201402249186
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Condo unit addition/alteration
Valuation:
$75,000
Permit #:
B16-00172
Status:
final
Fee:
$3,278
Permit Type:
N/A
Building Type:
N/A
Replace 125 amp electrical service repair sheetrock and siding (damage from panel replacement)
Valuation:
$2,500
Permit #:
B13-01935
Status:
final
Fee:
$199
Permit Type:
N/A
Building Type:
N/A
Flat work to replace existing asphalt paving striping & labeling & ada signage
Valuation:
$2,000
Permit #:
B19-01730
Status:
final
Fee:
$895
Permit Type:
N/A
Building Type:
N/A
Change out existing 150 amp electrical panel - same amperage in main dwelling
Valuation:
$2,200
Permit #:
B16-00020
Status:
final
Fee:
$114
Permit Type:
N/A
Building Type:
N/A
Replace hot water n main dwelling
Valuation:
$800
Permit #:
B16-00121
Status:
final
Fee:
$114
Permit Type:
N/A
Building Type:
N/A
Addition bathroom & laundry connection in extisting rec room
Valuation:
$20,000
Permit #:
B14-01819
Status:
final
Fee:
$1,233
Permit Type:
N/A
Building Type:
N/A
Remove/replace kitchen cabinets & countertops. upgrade electrical and lighting per code sheetrock tape texture & paint as req. and copper re-pipe
Valuation:
$10,000
Permit #:
B15-00585
Status:
final
Fee:
$608
Permit Type:
N/A
Building Type:
N/A
Guesthouse - convert 2nd floor of existing barn into guesthouse
Valuation:
$39,000
Permit #:
B14-00360
Status:
final
Fee:
$2,086
Permit Type:
N/A
Building Type:
N/A
New accessible bathroom building
Valuation:
$125,000
Permit #:
B19-00629
Status:
final
Fee:
$7,366
Permit Type:
N/A
Building Type:
N/A
Code violation - main dwelling and workshop alt; convert illegal garage conversion back to original garage use create 2 additonal bathrooms in dwelling within exist footprint convert illegal bathroom on second floor back to linen closet relocate air conditioning remove plumbing replace gas line and appliances from workshop per plan & code
Valuation:
$40,000
Permit #:
B13-01598
Status:
final
Fee:
$3,815
Permit Type:
N/A
Building Type:
N/A
Unit#208: 4 switches 2 receptacles 1 microwave 1 circuit; bathroom remodel
Valuation:
$0
Permit #:
E201402247540
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Upgrade electrical panel. 200amp
Valuation:
$2,000
Permit #:
B14-00679
Status:
final
Fee:
$114
Permit Type:
N/A
Building Type:
N/A
Unit #208: new shower valve new toilet new shower pan new vanity
Valuation:
N/A
Permit #:
PP20140224460
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Unit #208: new shower valve new toilet new shower pan new vanity
Valuation:
$0
Permit #:
PP20140224460
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$17,000
Permit #:
B07-00602
Status:
final
Fee:
$898
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$5,000
Permit #:
B04-01106
Status:
final
Fee:
$192
Permit Type:
N/A
Building Type:
N/A
R-3 dwelling-main-alteration
Valuation:
$7,500
Permit #:
B11-00232
Status:
final
Fee:
$517
Permit Type:
N/A
Building Type:
N/A
Upgrade to 125 r&r water heater remodel kitchen
Valuation:
N/A
Permit #:
ST06-0228
Status:
final
Fee:
$258
Permit Type:
N/A
Building Type:
N/A
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Verified License
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Thomas Jay Ault License info
Verified License
| License # | 732279 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Thomas Jay Ault at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Bonded
| Bonded Agent | Hudson Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Norguard Insurance Company |
27
Permits
- Building permit records show that Thomas Jay Ault has worked on 27 permitted projects.
Thomas Jay Ault Employees
TA
Thomas Jay Ault
Owner