Residential drafting in Avondale, Arizona

Avondale has some older housing from the 1970s and 1980s, but much of the detached stock a residential drafter encounters is production housing from the 1990s and 2000s. Garden Lakes, Rancho Santa Fe, and Coldwater Springs are typical of that period. Stucco exteriors, tile roofs, attached garages, walled rear yards, and one or two story plans are common.

The mainstream lots are generally compact. Representative neighborhoods often fall in the range of roughly 5,000 to 6,500 square feet, and pools are common in some of the late 1990s tracts. Once the house footprint, patio, pool, equipment, and side access are accounted for, the open rear yard can be considerably smaller than the lot area suggests. Newer communities such as Alamar continue the production pattern but include a wider range of garage sizes and current floor plans.

There is little evidence of an Avondale specific construction system that separates these houses from comparable West Valley tract homes. The practical work is usually more ordinary: confirming which walls carry structure, matching stucco and roof tile, checking the existing slab before alterations, and measuring what has changed since the original house was built.

Avondale rules

ADU standards

Setback, size, and parking rules for an accessory dwelling unit in Avondale.

Maximum sizeThe lesser of 75% of the dwelling's interior habitable area or 1,000 sq ft (28-33(a)(3)(A))
BedroomsCapped at two (28-33(a)(3)(G))
Side and rear setback5 ft rear and 5 ft side (28-33(a)(3)(D))
Front setbackThe underlying district's front setback (28-33(a)(3)(D)(III) and 28-35)
HeightThe same restriction as the single family dwelling (28-33(a)(3)(F))
How manyOne attached and one detached below an acre; on an acre or more with at least one restricted affordable unit, one attached and two detached (28-33(a)(1))
Rented separatelyYes. Either the primary dwelling or any ADU may be separately leased as long term rental housing (28-33(a)(2)(C))
ParkingNo additional space or in lieu fee required (28-33(a)(5))
Access and addressSeparate entrance and independent egress required; separate house number visible from the right of way required; one driveway must serve both dwellings (28-33(a)(3)(H), (I), (L))
DesignExterior design, roof pitch, and materials do not have to match the main house (28-33(a)(3)(J))

Avondale writes down what other cities leave vague: a two bedroom cap, a required separate house number, and a single shared driveway (28-33(a)(3)(G), (I), (L)).

Short term rental of a unit approved on or after September 14, 2024 requires the owner to live on the property, with a grandfathering exception for owners who can show a pre existing legal right to build (28-33(a)(7)).

Guest houses permitted before November 18, 2024 are treated as ADUs, and new guest houses are no longer a separate use (28-33(a)(1)(D)).

Planning office: Avondale Development Services

Sources: Avondale Zoning Ordinance 28-33(a). Ordinance 2032-1124, adopted November 2024. A.R.S. 9-461.18. A.R.S. 9-500.39. Last checked August 2026.