Before You Build in Peoria, AZ: Permit & Rule Checklist (2026)

Peoria requires a permit before anyone builds a fence or wall taller than seven feet anywhere in the city, and a separate Engineering Department permit for any fence or wall placed inside a street right-of-way. Wall height requests topping eight feet do not get an automatic yes: the City Engineer has to review and approve them under the Zoning Ordinance's walls-and-fences section, 21-312.

Peoria treats a retaining wall as a code-regulated structure once it crosses set height thresholds. Under Section 20-257, any retaining wall over 3 feet must be designed by a civil or structural engineer and approved by the Community Development Department's Plans Review Division before construction. Separately, Section 18-21 exempts walls of 40 inches or less from needing a building permit at all, unless they hold back a surcharge or hazardous liquids.

Peoria caps residential front-yard fences and walls at three feet and side or rear yard fences at seven feet under Section 21-312.B.1 of the Zoning Ordinance. Corner lots get an extra rule: anything over three feet has to clear a sight triangle measured ten feet along the shared lot line and twenty feet toward the front of the corner lot.

A Peoria fence or wall has to sit entirely on the builder's own property unless the neighbor signs a written agreement letting it straddle the division line, a rule Section 21-312.A.2 spells out for every lot. The same section makes every wall the owner's ongoing responsibility: let it fall into disrepair or become a hazard and the City can order it abated as a nuisance.

Above-ground pools in Peoria must meet the same barrier and safety requirements as in-ground pools. Pools with walls under 5 feet require additional fencing to meet the barrier height requirement.

Peoria enforces strict pool barrier requirements per city code and ARS 36-1681. All pools, spas, and hot tubs with water over 18 inches deep must be enclosed by a barrier at least 60 inches high. Gates must be self-closing and self-latching with latches at least 54 inches above grade. No gaps allowing a 4-inch sphere to pass. Peoria provides a pool barrier inspection checklist.

Peoria allows one attached and one detached accessory dwelling unit on a standard single-family lot under Section 21-316, capping each ADU at seventy-five percent of the main house's floor area or 1,000 square feet, whichever is smaller. Lots of an acre or more can add a second detached ADU if it is deed-restricted as affordable housing.

Peoria sizes and sets back accessory buildings on a sliding scale in Section 21-315.C: sheds under eight feet tall and 200 square feet can sit right on the side or rear property line if unserved by utilities, while anything bigger has to pull back at least three feet, and anything over nine feet or 300 square feet has to meet the full zoning setback for its district.

Peoria adopted International Residential Code Appendix Q, which sets simplified construction standards for tiny houses, then narrowed the local definition: a tiny house must measure at least 200 square feet and no more than 400 square feet of floor area, not counting lofts. Anything smaller or larger falls back to the full Residential Code.

Peoria requires an Activity Permit before any open burning, issued under the 2018 International Fire Code as locally adopted. The permit costs $75, must be applied for at least 30 days before the burn, and burning without one is a fire code violation enforced by the Fire-Medical Department.

Trimming, cutting, or removing any tree along a Peoria street, alley, or park takes written sign-off from the City Arborist first, whether you're a homeowner clearing a limb over the right-of-way or a utility company keeping branches off overhead wires. City Code Section 7-56 bans topping altogether, and stumps have to come out below grade under Section 7-57.

Peoria's Drought Contingency Plan lets the City Manager declare four escalating water deficiency stages, from a voluntary 5% reduction goal at Stage 1 up to mandatory Water Emergency measures at Stage 4, with rate surcharges and aggressive enforcement once a stage is mandatory.

Peoria may regulate removal of trees in certain developments and planned communities. Native desert trees on development sites may require preservation or replacement as part of the zoning approval process.