Knowledge Base

For work including, but not limited to, potholing, boring, trenching, and utility pole work in Thornton right-of-way. Applicable only to franchisees (Comcast, United Power, Xcel Energy) and their subcontractors. Applicants must complete the Infrastructure Franchise Construction Permit application. Requirements for this application include, but are not limited to:

• Contractor must have a Thornton Contractor’s license.
• Quality Level B construction plans must be uploaded to the application.
• An approved Traffic Control Permit if one is required. This is obtained through the Infrastructure Franchise Traffic Permit application.
• $250 permit fee.
• Pre-construction meeting with Thornton staff no less than 48 hours before starting work.
• Permit requests sent via email will not be processed.  
• Applications for original permits, extensions, and renewals must be submitted online. 

Important permit application information:

Original Permit:

• There is not yet an existing permit for the scope of work at the job site. 

Permit Extension:

• Permit has been expired for thirty (30) days or fewer, and scope of work is not being modified,  and traffic control plans are not being modified. Traffic control fees apply. 

Permit Renewal:

• Permit has been expired for thirty-one (31) days or more, or the scope of work and/or contractor performing the work has changed. Construction and traffic control fees apply. 
• Standard review time is at least five (5) business days, plus an additional two (2) days for processing. 
• If you request a start date fewer than seven (7) calendar days away, select the earliest calendar option on the form and include your desired dates in the “Special Conditions” field. 
• We cannot guarantee that an earlier permit date will be fulfilled, but efforts will be made to honor the dates requested. 
• Payments submitted after 1:00 p.m. will not be processed until the following business day.  
• A receipt from our “noreply” email address indicates that payment has been captured. It does not indicate that the permit has been fully processed.  
• All work shall comply with the provided permit conditions.

If you have any questions, please call the Infrastructure Engineering office at 720-977-6210, or email infrastructure.permits@ThorntonCO.gov.