Council directs staff to use a 10% GFA threshold as it implements HB 24‑47 administrative site‑plan changes
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Summary
Staff proposed a two‑pronged test to separate administrative site‑plan modifications from legislative ones under HB 24‑47; council directed staff to proceed with that framework but use a 10% gross floor area threshold (instead of staff's initial 15%) and remove a 5,000 sq. ft. cap so routine changes can be handled administratively while preserving council review for substantive use or site‑plan changes.
City planning staff briefed the Mesa City Council on Feb. 5 about proposed text amendments to the Mesa Zoning Ordinance intended to implement HB 24‑47, a state law requiring clearer objective standards for administrative approvals.
Staff presented a two‑pronged test that would categorize a site‑plan modification as legislative (returning the matter to council) if: (1) the site plan is significantly modified by objective criteria such as a threshold change in gross floor area (GFA), increased residential density, addition of a drive‑through, or a traffic increase verified by a traffic impact analysis; and (2) the modification amounts to a change of use. Assistant planning staff explained examples and how the current code treats some modifications as legislative because they are tied to prior ordinance stipulations.
"If both of those answers are yes, those are the cases that would come back to council," staff said, describing the test.
Council members debated balancing faster, predictable approvals for the development community with preserving public input when an approved site plan substantially changes the tradeoffs that justified an earlier rezoning. Several council members argued the current 5,000 square‑foot cap was producing unnecessary returns to council and recommended retaining a percentage-based trigger instead. On council direction, members agreed to adopt a 10% GFA threshold (rather than staff's 15% proposal) and to remove the 5,000‑square‑foot cap to start, with an evaluation after the amendments are implemented.
Council emphasized that the proposed changes are intended to meet state objectives while preserving council's legislative voice for significant changes that materially affect community benefits tied to a rezoning.
Next steps: staff will prepare ordinance language reflecting the two‑pronged test with a 10% GFA threshold and return to council in a future meeting for formal adoption.
