Knowledge Base

To report someone who is doing (or has done) work without a permit, or to report a concern about some other type of building construction activity, submit a request in My Thornton.

Building permits are required to erect, enlarge, alter, move, demolish, or repair any structure in the City of Thornton. This includes everything from fences and decks to residential and commercial new construction or remodels. Additional information on the permitting process is available by searching for "permit" in the My Thornton knowledge base or visiting our Building Inspections page.