Residential drafting in Buckeye, Arizona
Buckeye covers more than 600 square miles, which makes any single description of the city misleading. The historic downtown and the surrounding agricultural settlement pattern hold older modest houses. Most of the current housing inventory went up after 2000 in large master planned communities, and Verrado, Sundance, Festival, and Tartesso are not interchangeable with each other or with the core.
Older core properties may have masonry, staged additions, irrigation remnants, thin utility records, and irregular accessory structures. Newer master planned houses have engineered trusses, slab on grade foundations, stucco, tile roofs, block walls, and prescriptive HOA palettes.
The practical consequence is that the same building can require completely different site work depending on where in Buckeye it lands. Washes, alluvial drainage, irrigation facilities, and long utility runs often matter more than the lot dimensions.
Floodplain administration for many Buckeye properties runs through the Flood Control District of Maricopa County, and that approval comes before the city building permit for work in a regulated area.
ADU standards
Setback, size, and parking rules for an accessory dwelling unit in Buckeye.
| Maximum size | 75 percent of the gross floor area of the house. No square foot cap (3.3.4.A.4) |
|---|---|
| Side and rear setback | 5 ft minimum (3.3.4.A.2) |
| Height | The district limit for a principal dwelling (3.3.4.A.2) |
| How many | One attached and one detached. One on a duplex parcel. One more detached on a lot of an acre or more if one is deed restricted affordable (3.3.4.A.3) |
Buckeye has no square foot ceiling on the unit. The limit is 75 percent of the house, full stop (3.3.4.A.4), which is more generous than the state floor and more generous than every neighboring city. On a large house that is a meaningfully bigger casita.
Older guidance limiting an accessory unit to a third of the house is superseded and should not be relied on.
Buckeye also posts three preapproved detached casita plans at the state's standard sizes. Those are a real head start on the building design. They are not a permit. The plan still has to be fitted to your lot: setbacks, floodplain, easements, utilities, grading, and the size of your existing house all still govern, and a plan that works on one Buckeye parcel may not work on another.
Planning office: Buckeye Development Services
Sources: Buckeye Development Code 3.3.4.A. Development Code effective November 2025. A.R.S. 9-461.18. Last checked August 2026.
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