Updated: Jul 12, 2026
Location
Address
12591 TAMARAC ST, Thornton, CO, 80602
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Proponent Site Work Contractor
Their BuildZoom score of 0 does not rank in the top 50% of Colorado contractors.
If you are thinking of hiring Proponent Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Proponent Inc Contact Information
Phone Number: (720) 412-1403
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Address: 12591 TAMARAC ST, Thornton, CO 80602
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Proponent Inc License info
License Not Verified
| Status | Active |
| City | Denver |
- When BuildZoom last verified this license, it had an expiration date of February, 2021. Check the current license status of Proponent Inc with the City and County of Denver Community Planning and Development
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Aurora |
| Type | Right Of Way Contractor |
- According to the Aurora, Colorado, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Denver |
| Type | Row Sidewalk |
- According to the City and County of Denver Community Planning and Development, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LCC202000392 |
| Status | Inactive |
| City | Thornton |
| Type | Class D Excavation/Grading |
- According to the Thornton City Development Contractor License, 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 Proponent Inc at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
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- *No active license on file. If you are Proponent Inc, click “This is My Business” to update your information.
Proponent Inc Employees
ES
Ernesto Sanchez