Westminster, CO Building Setbacks & Zoning: Structure Height Limits (2026)

5 to 22 dwelling units per acre. Commercial and industrial districts B1, C1&C2, and M1 allow principal buildings up to 65 feet. Accessory building height is capped at 15 feet in every district except O1, where it rises to 35 feet, matching the taller principal-building allowance there. A separate row limits non-building structures, such as towers or antennas that are not habitable buildings, to 25 feet in RE, R1, RA, R2, R3 and R4, and 35 feet in T1, B1, C1&C2, M1 and O1. For PUD-zoned property where the Preliminary or Official Development Plan has not set its own maximum, Section 11-4-5(C) supplies fallback heights: 40 feet for a residential principal building, 65 feet for a non-residential or mixed-use principal building, 15 feet for a residential accessory building, and 35 feet for a non-residential accessory building or non-building structure.

Section 11-4-5(B) allows the City Manager or a designee to grant up to a 10-percent increase in the height limit if the increase would not significantly change the site plan or create a significant negative impact on adjoining properties. Section 11-4-6(L) specifies that building height is measured under the City's currently adopted Building Code.