Thornton issues a variety of building, development, and infrastructure permits. Please ensure that you select the proper type of permit prior to completing your application. Contact us if you have any questions.
A building permit is required anytime a homeowner or contractor erects, constructs, enlarges, remodels, alters, repairs, moves, improves, removes, converts, demolishes, or changes the type of occupancy of any building, structure or utility.
If you have any questions please call the Building Inspection Division at 303-538-7250, or email firstname.lastname@example.org. Additional information is available at the Building Inspection Division page.
The City of Thornton requires licensing for all contractors involved in the construction, alteration, remodeling, repairing and equipping of buildings and structures; installation of underground utilities; construction of roads and streets and construction of all City-owned water, sewer, and storm drainage facilities. Homeowners doing work on their personal private residence are not considered contractors and are not required to obtain a contractor license.
The following contractor license links will direct you to the City of Thornton's new CityView Portal. Its Help Section has instructions for registering a user account, and obtaining or renewing a contractor license. If you require assistance please contact the Building Inspection Division at 303-538-7250.
Permits for new development, redevelopment, sewer service repair (includes in yard/lot and right-of-way), and water service repair (includes in yard/lot and right-of-way) work.
If you have any questions please call the Infrastructure Engineering office at 720-977-6210, or email email@example.com. Additional information is available at the Permit Requirements.
To see if your permit application will be affected by any city street rehabilitation, click here to view the Street Rehabilitation Map.
City of Thornton capital improvement project work.
Work being ordered for XCEL, Comcast, Centurylink, United Power.
Right-of-way permits for special events, on-street containers, and right-of-way work such as boring, potholing, volunteer work, and utilities.
If you have any additional questions please visit our frequently asked questions sheet below.