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Cathedral Rock, a red sandstone formation near Sedona, Arizona, at sunset.Image by Kaileen Fitzpatrick

Tiny Homes in Arizona: Laws, Communities and Real Tours

Updated November 4, 2026. Some laws may have changed since then. Confirm with your city or county before you buy land or a home.

The short answer

Yes, you can live in a tiny home full time in Arizona, and the rules are set mostly by your city or county. On a permanent foundation it is a house under whatever building code that city or county uses, and Phoenix, Tucson and Pima County have adopted the national tiny house appendix. On wheels, it usually fits the state's definition of an RV, so local zoning decides where you can live in one. A 2025 state law requires counties to allow backyard ADUs, with a January 1, 2026 deadline, after a 2024 law did the same for cities of more than 75,000 people. Arizona has the 13th highest cost of living of the 50 states, a flat 2.5 percent income tax, an effective property tax rate of 0.48 percent (4th lowest), and homeowners insurance averaging $3,415 a year. We have filmed two tiny homes here so far.

On this page. Quick facts, the rules in plain words, where to start, living in Arizona, communities, our tours and common questions.

Arizona has no statewide building code for site-built houses. Each city and county chooses its own, so the same tiny home can be simple to permit in one place and hard in the next. A tiny home on a permanent foundation, meaning it is anchored to a base built into the ground, like a concrete slab or piers, is treated as a house under the local code. A tiny home on wheels, built on a trailer so it can be towed, usually fits the state's definition of a recreational vehicle, and local zoning decides where you can live in it.

This guide covers how the codes work, Arizona's two ADU laws, a rule for park models on rural land, where the communities are, and the Arizona homes we have toured.

Quick facts

  • On a foundation (anchored to a base in the ground): treated as a house under the building code your city or county has adopted.
  • On wheels (built on a trailer): Arizona law has no tiny home category. Most fit the state's definition of a recreational vehicle, either a park trailer or a travel trailer. Where you can live in one, and for how long, depends on local zoning.
  • Building code in force: no statewide code. Phoenix, Tucson and Pima County use the 2024 International Residential Code. Unincorporated Maricopa County still uses the 2018 codes while a move to the 2024 codes is under review.
  • Sleeping lofts (a raised sleeping area reached by a ladder or stairs): covered by the national tiny house appendix where your city or county has adopted it. Phoenix, Tucson and Pima County have.
  • ADUs (a second, smaller home on the same lot as a house): cities of more than 75,000 people and all counties must allow them, with one attached and one detached ADU on single-family lots.
  • Septic (an underground system that treats wastewater where there is no city sewer): in most counties, the county environmental office issues the permit under authority from the state. Ask your county.

Can you live in a tiny home full time in Arizona?

Yes. The answer depends on the home type and on your city or county.

  • On a foundation, a tiny home is a house. It has to meet the building code your city or county has adopted. Some places have also adopted the national tiny house appendix, which has rules made for homes of 400 square feet or less, such as lofts and ceiling heights.
  • On wheels, it usually fits the state's RV definition. We found no state law that allows full-time RV living on private land statewide, so local zoning decides. Some counties allow it in certain zones, and others, like Maricopa County, use a temporary use permit for living in one while you build a house.
  • In an RV park, a tenant who rents a space for more than 180 days is covered by the state's long-term RV space rental law, including tenants with park models on wheels.

The rules in plain words

Building code

Arizona does not have a statewide residential code. State law lets each county adopt building codes for its unincorporated areas and exempt rural areas if it chooses. Cities adopt their own. State law also says counties cannot require fire sprinklers in single-family detached homes, except under county rules adopted before December 31, 2009.

That makes the code edition, and whether the tiny house appendix is in it, a local question. The appendix is called Appendix BB in the 2024 code and Appendix Q in the 2018 code.

  • Phoenix uses the 2024 code, effective August 1, 2025, and its adopted appendices include Appendix BB.
  • Pima County, outside city limits, adopted the 2024 code with Appendix BB and one local change on sloped ceilings. See the note below on what its own pages say.
  • Tucson uses the 2024 code, effective January 1, 2026, and its adopted appendices include Appendix BB, with the same local change on sloped ceilings. The city says applications received on or after July 1, 2026 must meet the 2024 code.
  • Unincorporated Maricopa County still enforces the 2018 codes. See the note below on its move to the 2024 code.
  • Flagstaff and Sedona use the 2018 code with Appendix Q. Sedona requires tiny houses to sit on a full continuous foundation.

Two of these places are not settled, so call before you design around the appendix.

Pima County's own pages disagree. Its 2024 code amendments, Ordinance 2025-15, adopt Appendix BB. Its tiny house permitting page, which is undated, still says tiny houses are built and inspected under the 2018 Appendix Q. The ordinance is the later and more formal of the two, so the sources lean toward the 2024 appendix. Ask Pima County Development Services which version it inspects to before you draw a loft.

Maricopa County's move to the 2024 code is still in progress. Its building code advisory board took up the change on August 11, 2026 and held a special meeting on a final draft on September 15, 2026. As of October 27, 2026, the county's list of adopted regulations still shows the 2018 codes, and we found no vote by the Board of Supervisors. If you are building outside city limits in Maricopa County, ask which edition applies on the day you apply.

If you would rather skip the loft ladder, see tiny home layouts without a loft.

Tiny homes on wheels

Arizona's RV definitions do not use the word "tiny." State law defines a recreational vehicle to include a park trailer, built on a single chassis on wheels and 320 to 400 square feet when set up, and a travel trailer under 320 square feet. Most tiny homes on wheels fit one of those, so where you can live in one is up to local zoning.

Counties handle this differently. Pima County treats a home on a chassis as a trailer and allows it in certain residential and rural zones. Coconino County allows an RV as a primary home under its zoning ordinance, sometimes with a permit, but not as an ADU. Maricopa County uses a temporary use permit for living in temporary housing while you build. Ask your planning office which rule applies to your land.

A rule for park models on rural land

Since 2022, state law has required counties to allow a park model as an ADU where zoning is one home per three acres or larger, except in high noise or accident potential zones near military airports. The park model has to sit on a semi-permanent or permanent foundation and connect to utilities, and the county can still require permits. On smaller lots, county zoning decides.

Modular and manufactured homes

Manufactured and factory-built homes are overseen by the Arizona Department of Housing's Office of Manufactured Housing, which reviews installation plans and issues installation permits. It can hand installation inspections to local agencies. Zoning for manufactured homes is local. Maricopa County, for example, says any rural or residential lot outside city limits can get a permit for one single-wide or multi-section manufactured home built after June 15, 1976, on a permanent foundation.

The ADU laws

Arizona has two main ADU laws, one for cities and one for counties, plus the park model rule above.

Cities of more than 75,000 people (2024 law). On any lot where a single-family home is allowed, the city must allow:

  • One attached and one detached ADU as a permitted use, plus a second detached ADU on lots of one acre or more if at least one of the ADUs is rented to households earning up to 80 percent of area median income.
  • An ADU of at least 75 percent of the main home's floor area or 1,000 square feet, whichever is less. The city can allow larger ones.

The city cannot require extra parking, require the owner and tenant to be related, ban long-term rental, require design to match the main home, or require rear or side setbacks over 5 feet. It cannot require fire sprinklers. A city that had not adopted rules by January 1, 2025 must allow ADUs on all residential lots without limits.

All counties (2025 law). Counties must allow one attached and one detached ADU, and a second detached ADU on lots of one acre or more, where the county may require at least one ADU to be kept affordable. The county must allow an ADU of at least 75 percent of the main home or 1,000 square feet, whichever is less. Counties face the same limits as cities on extra parking, requiring the owner and tenant to be related, banning long-term rental, matching design and rear or side setbacks over 5 feet, and cannot require fire sprinklers. Where there is no sewer, it can require an adequate septic system. County rules on wildfire prevention, emergency vehicle access, and drainage and flood control still apply. A county that had not adopted rules by January 1, 2026 must allow ADUs on all residential lots without limits.

Neither ADU law applies on tribal land or in some areas near airports and military bases. Check your HOA covenants and deed restrictions too.

Middle housing

A separate 2024 law requires cities of 75,000 or more to allow duplexes up to fourplexes and townhouses on some single-family lots, including within one mile of downtown, by January 1, 2026. It does not apply outside city limits.

Where to start

  1. Not sure which office covers your land? USA.gov's local government finder points to a directory of Arizona's counties and cities, with their websites and contacts.
  2. Call the planning and zoning office for your land. That is the city if you are inside city limits, and the county if you are not. Ask what zoning the land has, whether a home of your size and type is allowed, and whether an RV can be lived in there.
  3. Ask the building safety office which code edition it uses and whether it has adopted the tiny house appendix (Appendix BB or Q).
  4. If the land is not on sewer, call your county's environmental services office about a septic permit. For a well, a private well that pumps 35 gallons a minute or less is filed with the Arizona Department of Water Resources.
  5. Ask about water before you buy raw land near Phoenix. Since June 2023 the state has stopped approving new assured water supply in the Phoenix area based on groundwater, apart from the state's Ag-to-Urban program, in effect since September 26, 2025, which lets farm groundwater rights be retired in exchange for credits toward new supply. That mostly affects new subdivisions.
  6. Pick the home type that fits the answers: site-built or modular on a foundation, a manufactured home, a park model, or a tiny home on wheels in an RV park or community.
  7. Get the building permit from your city or county. For a manufactured or factory-built home, the Arizona Department of Housing handles installation.

Living in Arizona

How Arizona compares with the other 49 states on the things people weigh before a move. Figures as of November 2026.

  • Happiness score (WalletHub 2026). 55.58 out of 100, 17th happiest
  • Cost of living (MERIC, Q2 2026; U.S. average is 100). 108.6, 13th highest
  • State income tax on wages. 2.5 percent flat
  • Property tax, effective rate on owner-occupied homes (Tax Foundation, 2024 data). 0.48 percent, 4th lowest
  • Homeowners insurance, average a year with $400,000 in dwelling coverage (NerdWallet 2026; U.S. average $2,490). $3,415
  • Health care (U.S. News 2026). 21st
  • Education (U.S. News 2026). 43rd
  • Average temperature, 1991 to 2020. 61.1 degrees F
  • Average precipitation, 1991 to 2020. 11.7 inches a year
  • Sunshine in Tucson. 85 percent of daylight hours, 193 clear days a year
  • Outdoor recreation, share of the state economy (BEA 2024). 2.7 percent (U.S. 2.4 percent)
  • State parks (Arizona State Parks attendance, 2025). about 2.5 million visits, January through October
  • People 65 and older (Census estimates, 2024). 19.6 percent (U.S. 18.0 percent)

Arizona has a flat 2.5 percent income tax and a 0.48 percent effective property tax rate. Living costs run above the national average, mostly because of housing. WalletHub ranks it the 17th happiest state, and U.S. News ranks it 21st in health care and 43rd in education. Tucson sees sun in 85 percent of daylight hours, outdoor recreation makes up a larger share of the economy than the national average, and 19.6 percent of residents are 65 or older.

Rankings mix many factors, and statewide averages hide big differences between regions. The low desert and the high country around Flagstaff have very different weather, so look at the area where you plan to live.

Tiny home communities in Arizona

These communities come from public listings. Rules, prices and openings change, so contact each one directly before you plan around it.

  • LuxTiny, Lakeside. Calls itself Arizona's first tiny home community, with 39 park model spaces. It keeps a waitlist, so call to check for openings. A second phase for manufactured homes of 400 to 850 square feet is planned for early 2027.
  • Tiny House Village, Flagstaff. Buy one of the builder's homes, from 399 square foot tiny homes with sleeping lofts to larger ones, or bring your own tiny house and rent a pad. Its site lists pads at $930 a month, including water, sewer, trash and amenities.

RV resorts that sell park models. Some Arizona RV resorts for people 55 and older sell park models to live in.

  • Cal-Am Properties runs 11 park model communities for people 55 and older in Mesa, Surprise, Tucson, Yuma and Gold Canyon, with homes of 400 to 800 square feet for sale. It markets them as vacation homes for snowbirds and small homes for retirees, so ask about year-round living and lot rent.

Tours we have filmed in Arizona

Here are the Arizona tours we can share so far. Each video description says more about the home and, where the owner is happy to share it, where it is.

Get new tours and guides

Every other Friday we send real tours, results from our audience polls, and parking and legal lessons from people living tiny. Join the Tiny Home Tours newsletter.

Frequently asked questions

Is it legal to live in a tiny house in Arizona?

Yes. On a permanent foundation, a tiny home is a house and must meet the building code your city or county has adopted. On wheels, it usually fits the state's RV definition, and local zoning decides where you can live in one and for how long.

Can I park a tiny home on wheels on my own land in Arizona?

It depends on your county or city. We found no state law that allows full-time RV living on private land statewide. Pima County allows a home on a chassis in certain residential and rural zones, Coconino County allows an RV as a primary home under its zoning ordinance, sometimes with a permit, and Maricopa County uses a temporary use permit while you build a house. Ask your planning office before you buy.

Does Arizona use Appendix Q for tiny houses?

Not statewide, because Arizona has no statewide residential code. Some places have adopted it. Phoenix, Tucson and Pima County use the 2024 version, called Appendix BB, though Pima County's tiny house page still cites the 2018 Appendix Q. Flagstaff and Sedona use the 2018 Appendix Q. Ask your local building office which version it applies.

Can I build an ADU in Arizona?

Yes, in most places. Cities of more than 75,000 people must allow one attached and one detached ADU on single-family lots, and a 2025 law requires all counties to do the same. In both cases the city or county must allow an ADU of at least 75 percent of the main home or 1,000 square feet, whichever is less. Smaller cities and towns set their own rules.

Do I need a septic permit for a tiny home in Arizona?

Yes, if the land is not on sewer. In most counties, the county environmental office issues septic permits under authority delegated by the Arizona Department of Environmental Quality. Ask your county.

Sources

This page explains the rules in general terms and is not legal advice. Local rules vary. Confirm with your city or county before you buy land or a home.

Hero photo: Cathedral Rock, Sedona, by Kaileen Fitzpatrick on Unsplash.

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