Updated: Feb 04, 2026
Location and Projects
Address
P O BOX 910, Sierra Madre, CA, 91025
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John D Werthwein Concrete Contractor
John D Werthwein, Sierra, Po Box 910, Sierra Madre, CA (Owned by: John David Werthwein) holds a Concrete license according to the California license board.
Their BuildZoom score of 93 ranks in the top 27% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring John D Werthwein, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
John D Werthwein Services
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John D Werthwein Contact Information
Phone Number: (626) 287-1788
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Address: P O BOX 910, Sierra Madre, CA 91025
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Remove and replace (existing) driveway - no new sq/f and no change to drainage pattern
Valuation:
N/A
Permit #:
BMN2008-00821
Status:
final
Fee:
N/A
Permit Type:
Paving
Building Type:
N/A
Tear off and reroof house only with 30 yr comparable over new sheathing
Valuation:
$10,500
Permit #:
B00-036-604
Status:
final
Fee:
$302
Permit Type:
Reroof
Building Type:
N/A
(1) new driveway approach
Valuation:
N/A
Permit #:
O99-000-042
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolish pool
Valuation:
N/A
Permit #:
B00-010-858
Status:
expired
Fee:
$69
Permit Type:
Apartment house
Building Type:
N/A
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Verified License
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John D Werthwein License info
Verified License
| License # | 515135 |
| Status | Active |
| State | California |
| Type | Concrete |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for John D Werthwein at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Clear Spring Property & Casualty Company |
John D Werthwein Employees
JW
John David Werthwein
Owner