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Rental Property Rules in Longmont, CO (2026)

1 verified rental property rules for Longmont, Colorado, sourced directly from the municipal code and official government pages.

Verified from official government sources

Repairs & Habitability

Landlords in Longmont must supply heat to every rented unit from September 1 through May 1 under the city's amended International Property Maintenance Code. Longmont Municipal Code § 16.20.330 rewrites the model code's heat-supply section to fix that six-month window citywide, backed by daily-offense penalties and a lien process under § 16.20.080.

Longmont Rental Heat Supply Season Rule

Some Restrictions

Longmont Municipal Code §§ 16.20.330, 16.20.080

Sec. 16.20.330. - Section 602.3 amended; heat supply. Section 602.3 of the International Property Maintenance Code is amended by the following: Insert the date "September 1" to "May 1" into the brackets. ... 109.1. Unlawful acts. It is unlawful for any person to erect, install, alter, repair, relocate, add to, replace, demolish, use, occupy or maintain any building or structure, or cause or per...

Looking for Boulder County county-wide rules?

County ordinances apply to unincorporated areas and may supplement Longmont city rules.

Rental Property Rules in Boulder County