Arizona’s New Casita Laws Do Not Guarantee Rental Income for Tucson Home Buyers

Arizona has made it easier to build and rent accessory dwelling units, commonly called casitas, but the laws do not turn every guest house into an income property. For buyers in Tucson, Arizona, the gap between what a casita could earn and what it is legally allowed to do is where expensive assumptions begin.

Tony Ray Baker, team leader at REMAX Fine Properties, says buyers are calling more often about homes with rental-ready guest houses. The interest makes sense. Buyers are looking at real estate as a way to offset a mortgage, house aging parents, or give adult children a place to live while they save. The research just has to come before the offer.

Arizona passed House Bill 2720 in 2024, requiring larger cities to allow accessory dwelling units on residential lots where single-family homes are permitted. House Bill 2928, signed in 2025, extended similar requirements to counties.

Tony Ray sees the changes as a positive development for multigenerational housing and additional rental supply. Arizona law also protects the ability to rent a qualifying unit on a long-term basis, so the old assumption that a casita in unincorporated Pima County cannot be rented is no longer generally accurate.

The laws set a framework, though. Setbacks, building codes, lot coverage, utility requirements, and permits still apply.

A Tucson mailing address does not confirm a home sits inside the City of Tucson. Two nearly identical homes can fall under different jurisdictions, one in the city and one in unincorporated Pima County, and the rules for construction, permits, and short-term rentals can differ between them.

That matters in the Catalina Foothills, where many homes with guest houses are in unincorporated county territory. Pima County updated its accessory dwelling unit regulations in December 2025, allowing qualifying units to be used for long-term or short-term rentals, subject to applicable requirements. State law also lets local governments require the owner to live on the property when a newer unit is used as a short-term rental.

Renting a casita for six months and advertising it for weekend stays are treated differently. Vacation rentals carry additional regulations.

A new law does not make every existing guest house eligible. Tony Ray notes that older casitas were often built under different rules, and some were approved only for specific uses. Others carry permitting or construction issues that surface only when someone investigates.

Homeowners associations add another layer. Private deed restrictions and governing documents can limit rentals, modifications, parking, and how accessory structures are used, even when state law and local zoning allow the use.

“I would much rather discover a potential problem before someone buys a home than have them discover it after closing,” Tony Ray says.

Tony Ray starts with the buyer’s goal: long-term rental income, a vacation rental, housing for family, or flexible space. Each points toward different properties. From there, the sequence is to confirm whether the home is in the City of Tucson or unincorporated Pima County, verify the casita was legally built and approved for its intended use, and review rental requirements and HOA documents.

If rental income is part of the financial plan, the numbers need the same scrutiny: realistic rental rates, vacancy, insurance, maintenance, utilities, and taxes. A legal rental is not automatically a profitable one. Tony Ray’s team walks buyers through this kind of review as part of its buyer process.

As more casitas appear in Tucson listings, the details behind each one will matter as much as the structure itself.

“I don’t want my clients discovering what they can’t do with a property after they own it,” Tony Ray says. “I want them to know before they write the offer.”

About the Expert: Tony Ray Baker is the team leader at REMAX Fine Properties in Tucson, Arizona, operating through SeeTucsonHomes.com. With over 30 years of residential real estate experience, Tony Ray and his team serve buyers and sellers across Tucson, Oro Valley, Marana, Sahuarita, Vail, Catalina, and Green Valley.

This article is based on information provided by the expert source cited above. It is intended for general informational purposes only and does not constitute legal, financial, or real estate advice. Readers should conduct their own research and consult qualified professionals before making any real estate or financial decisions.

Disclosure: Individuals or companies mentioned may have a commercial relationship with KeyCrew.

This contant was orignally distributed by Keycrew.co. Blockchain Registration, Verification & Enhancement provided by NewsRamp™. The source URL for this press release is Arizona’s New Casita Laws Do Not Guarantee Rental Income for Tucson Home Buyers.