Tiny home rules in Oro Valley, AZ — covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds — determine where they are legal and how they get permitted.
Oro Valley has no dedicated tiny home ordinance. Tiny homes on foundations may be permitted if they meet IRC minimums. Tiny homes on wheels are classified as RVs and cannot serve as dwellings.
The Town of Oro Valley has no standalone tiny home code. Tiny homes on permanent foundations are evaluated under standard residential building permit requirements and must meet International Residential Code minimums: at least one habitable room of 120 square feet, minimum ceiling height of 7 feet, and compliant kitchen, bathroom, and egress provisions. Tiny homes on wheels (THOWs) are classified as recreational vehicles under the Zoning Code and are subject to RV parking and storage rules -- they cannot be used as primary or secondary dwellings on residentially zoned lots. Pima County adopted modest ADU reforms but Oro Valley retains its own zoning authority. Most HOA-governed subdivisions in Oro Valley restrict or prohibit secondary dwelling units through CC&Rs, making tiny home placement impractical in the majority of neighborhoods. Manufactured homes must meet HUD Code standards and are allowed only in designated zones.
Unpermitted dwelling structures are subject to code enforcement action, fines up to $2,500 per day, and mandatory removal. Living in an RV on a residential lot may result in citations under nuisance provisions.
Oro Valley, AZ
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Side-by-side rule comparisons with other cities in Pima County.
See how other cities in Pima County handle tiny homes.
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