Loveland, CO Accessory Structures: Tiny Homes (2026)

Loveland regulates 'tiny homes' through their classification as either a permanently-mounted dwelling (governed by the 2021 International Residential Code as adopted in Loveland Title 15) or a recreational vehicle (governed by RV-park rules and prohibited as a permanent residence in standard residential zones). Tiny Houses on a Foundation (THoF) of 400 sq ft or less qualify for the relaxed standards in IRC Appendix Q: lower minimum ceiling height (6 ft 8 in in habitable spaces; 6 ft 4 in in bathrooms and kitchens), loft sleeping areas with reduced headroom (3 ft 6 in clear vertical space), smaller egress windows from lofts, and steeper stairs and alternating-tread devices for loft access. Colorado has not adopted IRC Appendix Q at the statewide level, but Loveland's Title 15 includes the 2021 IRC; verify with Loveland Building Division (970-962-2727) whether Appendix Q is locally adopted or available by alternative compliance. After Colorado HB 24-1152 (effective June 30, 2025) a permanently foundation-mounted tiny home on a single-family lot can qualify as an Accessory Dwelling Unit (ADU) under Loveland's updated UDC Title 18 - subject to the 75%-of-primary or 900 sq ft / 1,000 sq ft / 1,200 sq ft (lot-size-based) size cap, the accessory-structure setbacks (typically 5 ft side/rear), height cap (not exceeding principal dwelling), and administrative approval (no public hearing, no owner-occupancy requirement, no parking requirement). Capital expansion fees are waived. Tiny Houses on Wheels (THoW) - those built on a trailer chassis and titled as recreational vehicles - are regulated by the federal Department of Housing and Urban Development (HUD) or the Recreational Vehicle Industry Association (RVIA) standards, not the IRC. THoW units are generally classified as RVs under Loveland UDC and Title 15, and cannot be used as permanent dwellings in standard residential zones. RV parks (where authorized in Loveland zoning) may allow longer-term RV occupancy. Tiny homes intended as primary residences should therefore be built or installed on a permanent foundation to satisfy Loveland's residential dwelling-unit requirements.