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Planners propose mapped buffer and grandfathering to protect established large‑lot neighborhoods
Summary
Commissioners asked staff to draft step‑down overlay options and grandfathering language to protect existing large‑lot neighborhoods if minimum lot sizes are reduced; staff will map where smaller lots could be allowed and return with concrete options.
Commissioners at the Feb. 26 Planning & Zoning workshop repeatedly raised protecting the character of Oronoco’s older, large‑lot neighborhoods as the code rewrite progresses. The group discussed several tools staff should draft for the next packet: mapped buffer/step‑down overlays, grandfathering language for existing lots, and clearer triggers for minor versus major subdivisions.
Several participants pointed to the community’s existing neighborhoods — Riverwood Hills, Cedar Woodlands and River Park — as examples of the ‘country‑style’ character some residents want preserved. Commissioners suggested a policy that would require any development abutting those neighborhoods to meet a larger lot size or face additional buffer/transition requirements. The idea is to avoid abrupt changes where new, smaller‑lot development would butt directly against long‑established large lots.
Staff recommended two practical approaches: (1) use the future land‑use map to color areas where smaller lot sizes might be allowed, and (2) create a new zone or subzone (for example an R1A or R2 overlay) that ties the step‑down protections to mapped locations. That approach would be transparent to residents and avoid ad hoc outcomes by showing on the map where different minimums apply.
Commissioners also discussed grandfathering existing lots so owners would not be retroactively required to meet new standards; they stressed that any protection must be clear so property owners and prospective buyers understand when lot splits and new development are allowed. Staff said they will present map‑based options and draft overlay language at the March 12 workshop for commissioners to consider.
The commission’s next steps are tactical and map‑based: staff will return with a proposed overlay showing where smaller minimums could apply, sample grandfathering text and suggested criteria for lot splits that distinguish minor subdivisions (no new streets) from major subdivisions that require full infrastructure review.
