Last Updated: June 09, 2026
Tiny Home Builders › Arizona › Tucson
Tiny Home Builders in Tucson, AZ
Free builder matching in Tucson and Pima County — ADU specialists, RVIA-certified THOWs, and foundation tiny home builders. Tucson’s ADU ordinance and HB 2928 open every SF lot statewide to ADU construction. Get matched in minutes.
Tiny Home Builders in Tucson, AZ
These Tucson-area builders are part of the AZ Tiny Life network. All have been reviewed for build quality, licensing, and Pima County permitting experience. Get a free quote through our matching service.
Tiny Homes of Tucson
Tucson’s dedicated ADU specialist — stick-built, ground-up construction for attached ADUs, detached ADUs, garage conversions, pool houses, and accessory structures. Deep expertise navigating Pima County and City of Tucson ADU permitting post-HB 2720 and HB 2928. Full service from design through Certificate of Occupancy. Contact: (520) 495-2444.
Uncharted Tiny Homes
Phoenix-based RVIA-certified THOW builder serving southern Arizona including the Tucson metro. 9+ models from 200 to 650 sq ft, desert-engineered for Arizona heat and UV. Delivery available to Pima County. Best for buyers targeting Tucson-area licensed RV parks or seeking a park model ADU under HB 2579.
Cavco Industries
Phoenix-headquartered park model manufacturer with dealers serving Tucson and Pima County. Cavco park models (under 400 sq ft, ANSI A119.5) are eligible as ADUs under Arizona HB 2579 when placed on a foundation meeting Tucson’s setback requirements. Good option for Tucson buyers wanting a factory-built ADU with fast delivery.
Zoning & ADU Rules in Tucson
Tucson and Pima County are actively ADU-friendly following state HB 2720 and the city’s own ADU ordinance. Tucson explicitly mandates that every lot be allowed at least a 650 sq ft ADU, with a 1,000 sq ft maximum. Note: the current Tucson ADU ordinance is set to be reviewed in 2026 and sunsets in 2028 — verify current rules before permitting.
| Zoning Factor | Tucson / Pima County Rule |
|---|---|
| ADU allowance | Every SF lot must permit at least one ADU per HB 2720 (cities 75k+) and HB 2928 (all AZ counties). Tucson ordinance: min 650 sq ft ADU, max 10% of lot area or 1,000 sq ft. |
| Setbacks | 5 ft minimum from side and rear property lines per AZ state law. 5 ft separation from other structures. Tucson’s specific setbacks may vary by zoning district — confirm with Pima County Development Services. |
| ADU permits | File with City of Tucson Planning and Development Services (within city limits) or Pima County Development Services (unincorporated areas). Tucson ordinance reviewed 2026 and sunsets 2028 — verify current rules at tucsonaz.gov. |
| THOW placement | THOWs classified as RVs in Tucson — must be in a licensed RV park or manufactured home community. Cannot park on a standard residential lot as a primary dwelling. |
| Park model ADU | HB 2579 allows RVIA park models (<400 sq ft) as ADUs in Tucson when placed on a foundation with proper setbacks — eligible for standard ADU permit process. |
Tucson Tiny Home Builder FAQ
Can I build an ADU on my Tucson property?
Yes — Tucson’s ADU ordinance requires that every SF lot be allowed at least a 650 sq ft ADU. The maximum is 10% of your lot area or 1,000 sq ft, whichever is smaller. HB 2928 (May 2025) further reinforces this by extending statewide ADU requirements to all Arizona counties. File permits through the City of Tucson’s Planning and Development Services department. Our builder partners handle the full permit process as part of their contracts.
Who are the best tiny home builders in Tucson?
Tiny Homes of Tucson is the primary ADU specialist based in Tucson, offering stick-built attached and detached ADUs with full permitting included (contact: (520) 495-2444). For RVIA-certified THOWs, Uncharted Tiny Homes in Phoenix serves the Tucson metro with delivery to Pima County. Cavco Industries has a statewide dealer network that covers Tucson for park model ADU placement. Through our free matching service, we connect you with the right builder for your specific site and build type.
How much does an ADU cost in Tucson?
ADU costs in Tucson typically run $125,000–$185,000 for a stick-built detached unit, depending on size, finishes, and utility hookup requirements. Pima County permit fees add approximately $2,000–$4,000. Park model ADUs (Cavco or similar) run $50,000–$120,000 for the unit plus foundation and utility connection costs. THOW delivery from Uncharted Tiny Homes starts at $80,000 for a 270 sq ft unit. Land in unincorporated Pima County costs significantly less per acre than Phoenix metro, making Tucson an attractive market for cost-conscious tiny home buyers.
What is the minimum size for an ADU in Tucson?
Tucson’s ADU ordinance sets a minimum ADU size of 650 sq ft. This is higher than Arizona’s state minimum of 200 sq ft — Tucson’s city ordinance takes precedence within city limits. In unincorporated Pima County, the state minimum of 200 sq ft applies. If you are building a park model ADU under HB 2579 (under 400 sq ft), placement on a foundation within Tucson city limits may require a variance — verify with Pima County Development Services before ordering a unit.
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