Under Section 46 of the Jefferson County Zoning Resolution (adopted Dec 16, 2025), an unincorporated STR must be a single-family detached dwelling with no more than 5 bedrooms. STRs operated in an Accessory Dwelling Unit are capped at 3 occupants. Colorado HB24-1007 bars relationship-based occupancy caps; any limit must use bedrooms or floor area.
Section 46 defines a short-term rental as a single-family detached dwelling, or portion thereof, containing not more than 5 bedrooms, used for paid lodging for periods of fewer than 30 consecutive days in unincorporated Jefferson County. STRs located within an Accessory Dwelling Unit are limited to a maximum of 3 occupants, or as updated by ADU regulations. Properties must also sit on at least 1 acre, comply with the underlying zone district, meet Wildfire Hazard Overlay District requirements, have valid water and sanitation, and use the primary dwelling unit. Colorado HB24-1007, the Prohibit Residential Occupancy Limits Act effective July 1, 2024, prevents counties from limiting occupancy based on familial or relationship status, so Jefferson County's caps are tied to bedrooms, ADU status and code-based standards. Confirm any property-specific occupancy figure with Jefferson County Planning & Zoning at 303-271-8700.
Exceeding the 5-bedroom STR definition or the 3-occupant ADU cap, or operating an STR without an approved Special Exception and permit, is a zoning violation enforceable by Jefferson County Planning & Zoning. Permits can be revoked for repeated occupancy or nuisance violations.
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See how Jefferson County's occupancy limits rules stack up against other locations.
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