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Commission postpones ADU zoning changes to April 23, tables Grand River overlay amendments
Summary
Planning staff outlined proposed accessory-dwelling-unit (ADU) zoning reforms, including a possible 1,000-square-foot cap and exemptions from accessory-structure limits; commissioners postponed ADU action to April 23, 2026 and tabled Grand River overlay use-table changes for further staff work.
The Grand Rapids Planning Commission on April 9 held an extended discussion of proposed zoning text amendments to expand and simplify accessory-dwelling-unit (ADU) rules and to revise permitted uses in the Grand River overlay. Staff presented task-force recommendations and said additional internal coordination and public outreach were needed for overlay changes.
Staff (Elizabeth) summarized tier-one ADU proposals: replace the current percentage-based ADU size tied to a primary dwelling with a fixed maximum (staff proposed 1,000 sq. ft., while retaining a subordinate-size check so an ADU would not exceed the primary structure), consider excluding non-living space (stairways, mechanical rooms) from ADU floor-area calculations, exempt ADUs from accessory-structure area and count limits, and allow more administrative flexibility for placement and setbacks. Staff cautioned some items—such as zero lot line setbacks or placement standards for multiple structures—are complicated and better addressed as part of a comprehensive zoning rewrite.
Commissioners asked clarifying questions about edge cases (for example, where an existing carriage house/foundational remnant might exist after a primary house burned) and about how an ADU larger than the primary structure would be handled (variance or special land-use review were discussed as potential avenues). Staff agreed more technical analysis was required to resolve subordinate-scale definitions and to assess interactions with other zoning provisions (green-space requirements, number of structures allowed, and alley/right-of-way constraints).
Outcome: the commission voted to postpone the ADU portion of the noticed zoning amendments to the April 23, 2026 meeting for further refinement and staff follow-up, and separately voted to table (open) the Grand River overlay use-table changes pending additional outreach and internal coordination. Both motions carried by voice votes.
Next steps: staff will refine ADU language, take feedback into account (including questions raised about size limits and placement), and return to the commission on April 23; overlay amendments will be further developed with stakeholders before returning to the commission.
