​Engineering Services Permit Information

Infrastructure Right of Way (ROW) Permit Requirements

CIP Permit Requirements

CIP permits are for Capital Improvement Projects or City Improvement Projects, and do not have a permit fee.

1. A contractor's license to work within the city of Thorntonbuilding-plans-in-hand_4460x4460.jpg
2. A current copy of Liability Insurance with the "City of Thornton" named as the certificate holder.
3. Construction plans and/or a Google Earth map showing the location of the work.

4. Contact information to include -

  • Daytime phone number.
  • Supervisor/foreman mobile phone number, or onsite contact.
  • Afterhours contact information
  • E-mail addresses
5. An approved Traffic Control Permit if one is required. This is obtained through the Infrastructure Traffic Permit application.

Franchise Permits

Franchise permits are for work being done by the following companies only: Xcel Energy, Comcast, CenturyLink, or United Power.

1. Any sub-contractor doing work for a franchise company will be required to obtain a Franchise Permit for any and all work. Including but not limited to -

  • Potholing
  • Boring
  • Trenching
  • Utility pole
  • Any work in and outside the city of Thornton and/or its right-of-way
2. Permit cost is $250
3. A sub-contractor working for a franchise company needs a contractor's license to work within the city of Thornton
4. A current copy of Liability Insurance with the City of Thornton named as the certificate holder.
5. Construction plans and/or a Google Earth map showing the location of the work.
6. An approved Traffic Control Permit if one is required. This is obtained through the Infrastructure Traffic Permit application.

7. Contact information to include -

  • Daytime phone number.
  • Supervisor/foreman mobile phone number, or onsite contact.
  • Afterhours contact information
  • E-mail addresses
8. Permits that are a result of a City Development project need to be applied for through City Development.

General Permits

General permits are permits for construction that is not a CIP or franchise project.

1. Permit cost is dependent on the total construction cost of project.

2. Requires escrow - To be determined by the City Engineer. 

  • Escrow is held for two years, from the time of the Final Inspection.
3. A contractor's license to work within the city of Thornton
4. A current copy of Liability Insurance with the City of Thornton named as the certificate holder.
5. Construction plans and/or a Google Earth map showing the location of the work.
6. An approved Traffic Control Permit if one is required. This is obtained through the Infrastructure Traffic Permit application.

7. Contact information to include -

  • Daytime phone number.
  • Supervisor/foreman mobile phone number, or onsite contact.
  • Afterhours contact information
  • E-mail addresses
8. Permits that are a result of a City Development project need to be applied for through City Development.

Other Items Required for General Permits

These items are not required for all General Permits.

ROW Use Agreement - An agreement between the contractor and the city of Thornton to have permission to work within the city's right-of-way (ROW).

  • The ROW Use Agreement covers contractors who are placing fiber within the city's ROW, but also applies to contractors building a structure and/or facility.
  • The ROW Use Agreement is written by the Infrastructure Traffic Manager who is the first contact in the agreement process.
  • This agreement requires approval from the city of Thornton's City Council.

Revocable Permit - A permit that allows a contractor to place a structure, such as monitoring wells, within the city's right-of-way (ROW), and is given a designated time frame to have the structure removed out of the city's ROW. The designated timeframe can be from one day to three years, and up to 100-years depending on the circumstance. At the end of the permit timeframe, the permit will be revoked with 90-day notice. This permit will go before City Council for approval.

  • Insurance on a Revocable Permit will be for a one year increments for the term of the permit.

Floodplain Development Permit -

This permit is required before construction or development begins within any area of special flood hazard area. A construction permit

will not be issued until the Floodplain Development Permit has been approved by the floodplain manager. For more information contact Jim Kaiser at 720-977-6266 or Rachelle Plas at 720-977-6239.

General Permits

General permits are permits for construction that is not a CIP or franchise project.

1. Permit cost is dependent on the total construction cost of project.

2. Requires escrow - To be determined by the City Engineer. 

  • Escrow is held for two years, from the time of the Final Inspection.
3. A contractor's license to work within the city of Thornton
4. A current copy of Liability Insurance with the City of Thornton named as the certificate holder.
5. Construction plans and/or a Google Earth map showing the location of the work.
6. An approved Traffic Control Permit if one is required. This is obtained through the Infrastructure Traffic Permit application.

7. Contact information to include -

  • Daytime phone number.
  • Supervisor/foreman mobile phone number, or onsite contact.
  • Afterhours contact information
  • E-mail addresses
8. Permits that are a result of a City Development project need to be applied for through City Development.

Water/Sewer Service Permits

 The following conditions require permits through the Infrastructure Department:

  • Repairs to Thornton utilities that extend from the yard to the right of way (sidewalk and/or street is disturbed) and are within City limits.
  • Repairs to Thornton utilities that are in-yard only and outside City limits (i.e. Unincorporated Adams County or Denver).

There are two links to follow. Please submit both the water/sewer construction and water/sewer traffic control* applications online:

NOTE: The following conditions require applications through the Buildings Department:

  • Repairs inside the home
  • Repairs to Thornton utilities in-yard only (no sidewalk or street disturbances) and within City limits.

1a. Construction permit cost is based on the contract amount extended to the customer. Enter that number into the "Sanitary Sewer Service" line of the application. You will be taken to a page to pay the fee online after you click "Submit."
1b. Traffic control permit cost is $50. You will receive a link to pay the fee via email.
2. A contractor's license to work within the city of Thornton is required.
3. A map showing the location of the work.
4. An approved traffic control plan  *If work is being done outside City limits please apply for a traffic control permit with the appropriate jurisdiction.
5. Contact information to include -
  • Daytime phone number.
  • Supervisor/foreman mobile phone number, or onsite contact.
  • Afterhours contact information
  • E-mail addresses
6. Permits that are a result of a City Development project need to be applied for through City Development.

Other Criteria and Stipulations 

Paving Moratorium – Sec 2-277(b) - No provider shall cause an open trench excavation or potholing of utilities in the pavement of any ROW for a period of at least one year from the completion or resurfacing, unless authorized by the city's Streets Manager. If, an asphalt cut is unavoidable and approved by the Streets Manager, the replacement shall cover a greater area then the originally cut and is to be determined by the streets manager.

 Minimal Interference

  • Ten feet minimum horizontal clearance
  • 18-inch minimum vertical clearance
  • If the minimum horizontal and vertical clearances are not adhered to then the permittee assumes all risk of damage and loss arising out of failure to comply with required clearances.  Sec 2-274(b)

Operating Without a Permit – Sec 2-272 (e)(4) - Any person found to be conducting any construction activity, work, or excavation activity without having first obtained any type of construction permit shall:

  • Shall stop all activity
  • Obtain required permit(s)
 
​Engineering Services Permit Contacts
​Al Alva ​Construction Supervisor ​720-977-6277
​Tony Acierno ​Utility Locator ​720-977-6559
​Terry Rasmussen ​Utility Locator ​720-977-6267
Jake McDermott Civil Engineering Technician ​720-977-6207
​Katie Kantor Administrative Specialist ​720-977-6210