Updated: May 22, 2026
Location and Projects
Address
1647 Willow Pass Rd, Concord, CA, 94520
Use our bidding system to
request a quote
Tap Master Inc Photos
Tap Master Construction
Proudly Serving California, Nevada, Arizona, Colorado, Utah, Montana, Idaho, Wyoming, New Mexico, New Mexico & Washington.
We specialize in Small to Large Pipeline Specialty Services Including Hot Tapping, Wet Tapping, Line Stopping, Pipe Freezing, Valve Insertion, Welding, Leak Repair and more. We Help You Eliminate Shutdowns and Draining the System!
From BuildZoom: Tap Master Inc, 1647 Willow Pass Rd, Concord, CA (Owned by: Stanely Mccallister) holds a Contractor license and 6 other licenses according to the Nebraska license board.
Their BuildZoom score of 101 ranks in the top 12% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Tap Master Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Tap Master Inc Contact Information
Phone Number: (925) 439-7975
Address: 1647 Willow Pass Rd, Concord, CA 94520
This is a sample of this contractor's permits. Click here to access their complete permit history.
Repair of utility gas line (approx. 10 ft) & gas test required *** revision to change scope of work - to replace water valve only 8/16/12 la***
Valuation:
$4,500
Permit #:
P12-0567
Status:
final
Fee:
$315
Permit Type:
N/A
Building Type:
N/A
Hot tap at tribune building
Valuation:
N/A
Permit #:
P1300471
Status:
final
Fee:
$163
Permit Type:
N/A
Building Type:
N/A
Install 3 earthquake shot-off valves at rolls royce engine warehouse; conduct medium pressure gas test
Valuation:
N/A
Permit #:
P0802279
Status:
final
Fee:
$170
Permit Type:
N/A
Building Type:
N/A
Hot tap at tribune building
Valuation:
N/A
Permit #:
P1300471
Status:
FINAL
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BI-2012-0620
Status:
complete
Fee:
$252
Permit Type:
plumbing permit -...
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BI-2012-0620
Status:
complete
Fee:
$252
Permit Type:
plumbing permit -...
Building Type:
N/A
Tap Master Inc Reviews
BuildZoom hasn't received any reviews for Tap Master Inc. Click here to be alerted when reviews are posted about them.
Hiring a contractor?
Verified License
BuildZoom confirmed this contractor's license
Tap Master Inc License info
Verified License
| License # | 35293-25 |
| Status | Active |
| State | Nebraska |
| Type | Contractor |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Tap Master Inc at the Nebraska Department of Labor.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 396536 |
| Status | Active |
| State | New Mexico |
| Type | Specialties |
| Business Type | Corporation |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Tap Master Inc at the New Mexico Contractor Licensing Division.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 257708 |
| Status | Active |
| State | Arizona |
| Type | General Dual K |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Tap Master Inc at the Arizona Registrar of Contractors.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | TAPMAMI835DT |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Tap Master Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 697696 |
| Status | Active |
| State | California |
| Type | Plumbing, Hot Tapping |
| Business Type | Corporation |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Tap Master Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | RCE-62535 |
| Status | Inactive |
| State | Idaho |
| Type | General Contractor Registration |
| Business Type | Corporation |
- According to the State of Idaho Bureau Of Occupational Licenses, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Tap Master Inc at the State of Idaho Bureau Of Occupational Licenses.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 323679 |
| Status | Inactive |
| State | Arizona |
| Type | Specialty Dual |
| Business Type | Corporation |
- According to the Arizona Registrar of Contractors, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Tap Master Inc at the Arizona Registrar of Contractors.
This is a sample of licensing data; click here to access a complete history.
101
BuildZoom Score
Insured
| Insurer | Scottsdale Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Cypress Insurance Company |
Tap Master Inc Employees
DH
Donald John Hardin
Officer
SM
Stanely Mccallister
Owner
SC
Stanley Mc Callister
President
SC
Stanley Wayne Mc Callister
Rmo / Ceo / Pres
SH
Steven Ray Helm
Qualifying Party