Updated: May 30, 2026
Location and Projects
Address
3600 CLAYTON RD C1, Concord, CA, 94521
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American Roof Service Incorporated
American Roof Service Incorporated at 3600 CLAYTON RD C1, Concord, CA 94521, held a Roofer license (#374164) with the California contractors license board with an expiration date of 07-24-2008. We last verified the license was revoked on 05-29-2026.
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.
American Roof Service Incorporated Contact Information
Phone Number: (925) 602-4789
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Address: 3600 CLAYTON RD C1, Concord, CA 94521
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Building Permits by American Roof Service Incorporated
This is a sample of this contractor's permits. Click here to access their complete permit history.
Reroof - remove 1 layer of composition shingles & install 30 yr fiberglass shingles (25 squares)
Valuation:
$7,900
Permit #:
BP00002624
Status:
canceled
Fee:
$166
Permit Type:
N/A
Building Type:
N/A
Remove 22 squares of wood shakes & install class a 40 yr composition shingles
Valuation:
$6,400
Permit #:
BP02003214
Status:
final
Fee:
$160
Permit Type:
N/A
Building Type:
N/A
Remove 28 squares of shakes & install 30 yr class a composition shingles
Valuation:
$8,400
Permit #:
BP02003563
Status:
final
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Reroof - remove 1 layer of wood shake & install 40 yr fiberglass shingles
Valuation:
$7,500
Permit #:
BP00002626
Status:
final
Fee:
$166
Permit Type:
N/A
Building Type:
N/A
Remove 22 squares of fiberglass shingles & install 30 yr fiberglass shingles
Valuation:
$4,706
Permit #:
BP00004252
Status:
final
Fee:
$123
Permit Type:
N/A
Building Type:
N/A
Reroof - remove 1 layer of shingles install fiberglass shingles 19 sq
Valuation:
$3,400
Permit #:
BP00003000
Status:
final
Fee:
$108
Permit Type:
N/A
Building Type:
N/A
Remove 21 squares of wood shake & replace with 25 year composition
Valuation:
$5,900
Permit #:
BP00001114
Status:
final
Fee:
$138
Permit Type:
N/A
Building Type:
N/A
Remove 25sq ft of shingles & install 50yr comparable shingle a
Valuation:
$6,641
Permit #:
B02-00518
Status:
final
Fee:
$173
Permit Type:
Re-roof
Building Type:
N/A
Remove 24 squares of shingles & install 30 yr fiberglass shingles
Valuation:
$5,000
Permit #:
BP01003498
Status:
final
Fee:
$125
Permit Type:
N/A
Building Type:
N/A
Remove 30 squares of shingles and replace with 30 yr. shingle
Valuation:
$6,000
Permit #:
BP01001523
Status:
final
Fee:
$138
Permit Type:
N/A
Building Type:
N/A
Remove 21 squares of shingles & install 30 yr composition shingles
Valuation:
$4,600
Permit #:
BP01001346
Status:
final
Fee:
$124
Permit Type:
N/A
Building Type:
N/A
Remove 26 squares of shakes & install 40 yr composition shingles
Valuation:
$7,000
Permit #:
BP02002662
Status:
final
Fee:
$154
Permit Type:
N/A
Building Type:
N/A
Remove 14 squares of built up roofing & replace with same
Valuation:
$5,000
Permit #:
BP00002711
Status:
final
Fee:
$123
Permit Type:
N/A
Building Type:
N/A
Remove wood shakes & install 30 yr composition shingles
Valuation:
$6,500
Permit #:
BP01003235
Status:
final
Fee:
$154
Permit Type:
N/A
Building Type:
N/A
Tear off comparable no plywood/apply new comparable
Valuation:
$5,136
Permit #:
B02-00621
Status:
final
Fee:
$159
Permit Type:
Re-roof
Building Type:
N/A
Remove tile roof & install 40 yr fiberglass shingles
Valuation:
$8,000
Permit #:
BP00002625
Status:
final
Fee:
$166
Permit Type:
N/A
Building Type:
N/A
Overlay 1 layer of comparable. on comparable. (total 2 layers)
Valuation:
$5,600
Permit #:
BP01004321
Status:
final
Fee:
$139
Permit Type:
N/A
Building Type:
N/A
Tear off shake resheath & install 30yr comparable. shingle
Valuation:
$6,800
Permit #:
BP02004153
Status:
final
Fee:
$160
Permit Type:
N/A
Building Type:
N/A
Tear off shake & resheath & install comparable shingles 40 yr
Valuation:
$8,200
Permit #:
BP03000114
Status:
final
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Tear off comparable & reroof w composition shingles (30 sqs)
Valuation:
$7,500
Permit #:
BP05002107
Status:
final
Fee:
$178
Permit Type:
N/A
Building Type:
N/A
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American Roof Service Incorporated Reviews
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American Roof Service Incorporated License info
Inactive License
| License # | 374164 |
| Status | Inactive |
| State | California |
| Type | Roofing |
| Business Type | Corporation |
- 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 American Roof Service Incorporated 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 American Roof Service Incorporated, click “This is My Business” to update your information.
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $12,500 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
32
Permits
- Building permit records show that American Roof Service Incorporated has worked on 32 permitted projects.
American Roof Service Incorporated Employees
MT
Mark Blaine Thoma
Sole Owner
ST
Sandra Lee Thoma
Officer
VA
Vicki Lou Aizenman
Officer