Several counties in Colorado allow tiny homes in some form, most clearly Boulder, Larimer, Jefferson, Ouray, Clear Creek, and La Plata County in the Durango area. What each county permits depends heavily on whether the home sits on a permanent foundation or on wheels, and on whether it meets the state’s specific definition of a tiny home. Counties including Adams, Garfield, Gunnison, Fremont, Pueblo, and Archuleta have also been reported to accommodate small dwellings on permanent foundations, with rules that vary and change often.
Why the State Definition Comes First
Before comparing counties, it helps to know what Colorado law actually calls a tiny home. Under C.R.S. 24-32-3302(35), a “tiny home” is a structure permanently constructed on a vehicle chassis, designed for long-term residency, not self-propelled, no larger than 400 square feet, and containing electrical, mechanical, or plumbing services fabricated off-site.1Colorado General Assembly. HB22-1242 Regulate Tiny Homes Manufacture Sale and Install
The definition deliberately excludes manufactured homes, recreational vehicles, recreational park trailers, semitrailers, and intermodal shipping containers. A small cabin built entirely on-site is not a “tiny home” under state law even if it’s under 400 square feet; it’s regulated as a conventional dwelling or accessory dwelling unit under local building codes and the International Residential Code. A tiny home on wheels that doesn’t meet the state definition may be classified as a recreational vehicle, which most counties restrict to campgrounds and RV parks.
House Bill 22-1242, signed August 10, 2022, gave the Division of Housing authority to set construction standards, register manufacturers and installers, and issue a metal plate insignia (installed under the kitchen sink) that signals compliance to local building officials.2Clear Creek County. Tiny Homes Whether a county will accept your structure often turns on that insignia.
Counties Allowing Tiny Homes on Permanent Foundations
Boulder County
Boulder County allows tiny homes and modular structures in unincorporated areas, but they must sit on a permanent foundation. Homes on wheels or trailers are not permitted. Every dwelling needs water service or a permitted well, plus a sewer connection or approved on-site wastewater system. The county follows the 2015 International Residential Code, which requires habitable rooms other than kitchens to be at least 70 square feet with a minimum horizontal dimension of seven feet.3Boulder County. Planning FAQ
Adding a second dwelling to a parcel with an existing single-family home requires a Limited Impact Special Use review. Boulder County also enforces its own BuildSmart energy efficiency standards and wildfire mitigation requirements, including sprinkler systems in some areas.3Boulder County. Planning FAQ
Larimer County
Larimer County permits tiny homes as accessory living areas on residential properties, and it’s one of the few counties that will accept a tiny home on wheels for that purpose when fixed to a temporary foundation approved by the county Building Department. Following passage of HB 24-1152, Larimer no longer requires a separate planning process before applying for an accessory living area building permit, though the planning division still reviews building permit applications for land use code compliance.4Larimer County. Accessory Living Areas
Accessory living areas must meet the same building standards as a primary dwelling: structural integrity, fire separation, emergency egress from bedrooms, minimum 70-square-foot habitable rooms, seven-foot ceilings, and energy efficiency requirements. In most of unincorporated Larimer County, wind and snow loads exceed standard prescriptive rules, so structural plans must be drawn and stamped by a licensed Colorado Professional Engineer. Applicants are responsible for confirming adequate water and sewer service before applying.4Larimer County. Accessory Living Areas
Jefferson County
Jefferson County allows a tiny home to serve as an accessory dwelling unit if it meets all the county’s requirements for a single-family home, including placement on a permanent foundation. Tiny home trailers with wheels do not qualify.5Jefferson County Colorado. Planning and Zoning – Accessory Dwelling Units (ADUs)
Ouray County
Ouray County permits small dwellings up to 800 square feet on permanent foundations. The county adopted the 2018 International Residential Code and requires at least one room measuring a minimum of 70 square feet, one complete bathroom, and one complete kitchen.6Ouray County. Minimum Dwelling Standards
Clear Creek County
Clear Creek County follows the state definition closely. It allows tiny homes of 400 square feet or less that are permanently constructed on a vehicle chassis and built to the International Residential Code as adopted by the Division of Housing’s Building Codes and Standards program. The homes must receive the state-issued metal plate insignia when installed on a temporary or permanent foundation.2Clear Creek County. Tiny Homes
Other Counties
Adams, Garfield, Gunnison, Fremont, Pueblo, and Archuleta counties have been reported to accommodate small dwellings on permanent foundations with varying size limits and utility requirements. Rules in these areas change frequently, and not all counties post detailed guidance online, so contact the specific planning or building department to confirm current rules before you buy land or a home.
Where Tiny Homes on Wheels Actually Work
A tiny home on wheels faces stricter hurdles for permanent residency. Most Colorado counties classify a THOW as a recreational vehicle unless it meets the state’s statutory definition and has been certified by the Division of Housing. In many areas, RVs cannot serve as permanent residences on residential lots and are limited to designated parks and campgrounds.
The 2022 law created a clearer path: a THOW that meets the 400-square-foot limit, is built to the IRC, receives the Division of Housing insignia, and is properly connected to utilities can function as a legitimate dwelling. Finding a jurisdiction that will issue the permits for your specific parcel is the harder step.
Larimer County, as noted above, will accept a THOW as an accessory living unit on a building-department-approved temporary foundation.4Larimer County. Accessory Living Areas
Beyond that, community living is often the more realistic route. The Durango area in La Plata County has three tiny home villages offering 113 spots combined, with two additional communities elsewhere in La Plata County. Hermosa Orchards Village, just outside Durango, offers 36-foot and 50-foot-wide spaces with utility hookups including 50- and 30-amp electrical, water, and sewer connections; space rent runs from $650 to $850 per month. Escalante Village was one of the first tiny home communities in Durango and the state. In Park County, Whispering Aspen Village at 59 Fuller Drive in Fairplay accommodates tiny homes on wheels alongside RVs and cabins. Community rules and space availability change, so contact any village directly.
The Statewide ADU Law Opens More Doors
HB 24-1152 widened where small dwellings can go across Colorado. By June 30, 2025, most local jurisdictions were required to allow at least one accessory dwelling unit on any lot where a single-unit detached home is permitted. A companion law, SB 24-174, prevents homeowners’ associations from adopting new rules that block ADU construction when local zoning would otherwise allow it.7Colorado Department of Local Affairs. Accessory Dwelling Units
The practical result: even counties or municipalities that haven’t specifically addressed tiny homes must now allow ADU-sized dwellings, which covers many tiny home configurations built on permanent foundations. The mandate does not force counties to accept tiny homes on wheels, and it doesn’t override the state definition or building code standards.
How to Confirm the Rules for Your Parcel
Colorado’s tiny home rules are moving faster than most county websites can keep up with. Before you commit to land or a home, contact the planning or zoning department of the specific county or municipality where you want to place your home. Ask about minimum square footage, allowed foundation types, utility connection requirements, and whether tiny homes on wheels are treated as RVs. Get the answers in writing when you can; verbal guidance from a front desk staffer doesn’t bind the county.
Check whether your county has a building department. In jurisdictions that don’t, the Colorado Division of Housing’s Building Codes and Standards section handles plan review, construction inspections, and foundation approvals for factory-built and tiny home structures.8Colorado Division of Housing. Factory Built Structures The Division can be reached at 303-864-7810.9Colorado Division of Housing. Foundations Inspection Card and Checklist – Tiny Homes
If a tiny home community is a better fit than your own parcel, visit in person and ask current residents about management, utility reliability, and any restrictions on modifications or resale. Spaces in popular villages fill quickly.