Colorado Tiny House Laws (2026 Overview)
HB 22-1242 and DOH rules (8 CCR 1302-14) certify tiny homes on chassis as legal dwellings—Appendix AQ covers foundation tinies. Local zoning still decides placement.
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Open map →Short answer: Colorado regulates tiny homes at the state level through HB 22-1242 and the Division of Housing (DOH). A DOH-certified tiny home (≤400 sq ft on a permanent chassis, DOH insignia plate) is a legal dwelling—local governments cannot prohibit it solely because it is on wheels. Zoning still controls where it may be placed. Foundation tiny houses follow Appendix AQ (Colorado's amended Appendix Q) through local building departments—a separate path from chassis tiny homes.
Deep dives: where to live legally in CO · best counties · own land in CO.
Three layers that decide legality
- State certification (DOH) — Is the unit a legal tiny home or an uncertified RV?
- Land use (zoning) — Which zones allow primary residence, ADU, or park?
- Installation & utilities — Septic, water, power, snow load, wildfire mitigation
Colorado is ahead of most states on layer 1; layers 2–3 still require local due diligence.
HB 22-1242 — what changed
| Item | Detail |
|---|---|
| Law | HB 22-1242 (2022) |
| Effect | Adds tiny homes to manufactured-housing regulation; DOH sets manufacture, sale, installation standards |
| Advisory committee | Includes tiny home industry representatives |
| Tax | Tiny homes treated as residential improvements for property tax where applicable |
| Consumer protection | Registration, escrow, bonding for sellers/manufacturers |
Legislative intent (CRS 24-32-3301): Encourages local governments to treat DOH-certified factory-built units comparably to site-built homes in similar zones—implementation varies.
DOH rules: 8 CCR 1302-14
| Item | Detail |
|---|---|
| Rules | 8 CCR 1302-14 |
| Codes | 2018 IRC + Appendix AQ, 2023 NEC, 2015 IECC |
| Plan review | DOH conducts design review; locals cannot charge building permit fees for DOH construction review |
| Installation | Participating jurisdictions may inspect installations on DOH's behalf |
| Climatic design | Units certified for site-specific snow load, wind, wildfire requirements |
Appendix AQ highlights:
- AQ108 — built-for-purpose trailer; CDOT/ CSP inspection if chassis modified
- AQ109 — temporary foundation with pedestal utilities allowing relocation
- AQ107 — kitchen sink may substitute for bathroom lavatory in size-constrained units
Tiny home vs tiny house vs park model
| Type | Definition | Who regulates | Full-time living |
|---|---|---|---|
| DOH tiny home | ≤400 sq ft, permanent chassis, long-term residency, DOH insignia | State DOH | Yes — legal dwelling; placement = zoning |
| Tiny house (Appendix AQ) | ≤400 sq ft foundation | Local building dept | Yes — permitted CO path |
| THOW (uncertified) | DIY or RVIA-only without DOH | Often RV | Usually parks/villages only |
| Park model (ANSI A119.5) | RV-industry ~399 sq ft unit | RV rules | Recreational — not DOH tiny home |
Source: DOH consumer guidance
Counties buyers research most
| County | Why |
|---|---|
| La Plata | Escalante Village PUD + six directory listings |
| Park / Teller | Alpine THOW villages |
| Huerfano | Walsenburg land-buyer interest — verify zoning |
| Larimer / Boulder | ADU + RV park split |
FAQ
Are tiny houses illegal in Colorado? No — DOH tiny homes and Appendix AQ tiny houses have explicit state frameworks.
Does certification mean I can park on any lot? No. Zoning and utilities still gate placement.
RVIA enough? Villages like Escalante require RVIA/NOAH; state-recognized dwelling status for owned land usually requires DOH certification.
How does Colorado compare to Nevada SB 150? Nevada SB 150 pushes zoning zones; Colorado HB 22-1242 adds state construction certification for chassis homes. Both still require local land-use approval.
Not legal advice—verify with DOH, county planning, and building departments.
Browse: Colorado directory · Colorado map
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