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Planning commission backs zoning text changes to emphasize design, reduce commercial masonry minimum from 60% to 40%
Summary
Staff proposed amendments to zoning chapters to shift from a broad 60% masonry requirement toward district‑specific design standards (proposed 40% masonry in commercial districts plus articulation requirements), clarify building height definitions, and allow limited side‑yard pools; the commission voted to forward the ordinance to council.
The Planning & Zoning Commission voted to forward to city council a proposed ordinance amending zoning chapters 167–169 to emphasize district‑specific design regulations and to reduce the general masonry requirement in commercial districts from 60% to a proposed 40% while adding articulation and transparency standards for multifamily and assisted‑living buildings.
Staff explained several changes: moving definitions (net floor area, floor area ratio) out of unused sections; changing how building height is measured (to top of flat roof with parapet exemptions); exempting necessary rooftop screening from height limits; and refining masonry requirements so residential multifamily elevations would have a baseline masonry percentage across all elevations rather than only elevations facing the street.
On the masonry change, staff said the goal is to "reduce masonry 60 to 40%" in commercial districts while strengthening articulation requirements (horizontal and vertical changes after specified distances) so buildings avoid long blank walls even with lower masonry percentages. Commissioners raised concerns about unintended consequences (for example, losing the aesthetic benefits of masonry); staff and a practicing designer in the room said the proposed shift allows more material innovation while design standards would protect quality. A commissioner also pointed to Iowa Code 414IH, which limits a city’s authority to regulate cladding on residential buildings of 12 units or fewer; staff said the amendment focuses on the tools still available to the city.
The commission voted to forward the ordinance amendment to city council with a recommendation for approval.
