Commission debates open‑space subdivision rules: setbacks, lot‑size variation and incentives

At the Dec. 18 planning commission meeting, commissioners held a workshop on possible revisions to Nibley’s open‑space subdivision code. Staff and commissioners focused discussion on setbacks, lot widths, minimum/average lot sizes, open‑space percentages and the financial incentives necessary to make open‑space subdivisions viable for developers.

Key discussion points: - Setbacks and compatibility: Commissioners suggested matching setbacks where an open‑space subdivision borders existing homes to reduce visual and privacy impacts on adjacent neighborhoods. - Lot‑size variation: Several commissioners urged changes that would require a mix of lot sizes rather than uniform 50‑foot lots. One commissioner proposed a tiered approach (for example, 5,500, 6,500 and 8,000 square‑foot lots) with limits on how many of the smallest lots can appear in consecutive runs, and a cap on the proportion of smallest lots (suggested figures included 45% for smallest lots and minimum percentages for larger lots) to ensure buffering and variety. - Incentives and feasibility: Commissioners discussed whether the current open‑space dedication thresholds and density bonuses produce economically viable outcomes. Multiple participants noted that high HOA costs and maintenance obligations (a participant cited HOA fees in the region around $200/month) change the affordability arithmetic for buyers and developers. - Zone structure: Commissioners debated whether the open‑space subdivision option should remain a bonus applied to underlying zones (R‑2, R‑2A) or become its own zone or overlay, requiring rezones. Creating a separate zone would make adoption and use clearer but would require legislative rezoning actions. - Preservation intent: Several members and staff noted the importance of clarifying whether open‑space provisions should prioritize ecological and riparian protection, agricultural preservation, or recreational access — a distinction that affects where and how easements or conserved parcels are located.

Staff direction and next steps: Commission members generally supported refining the draft ordinance language to (a) add clarity on setbacks adjacent to existing development, (b) require or incentivize varied lot sizes and lot widths, and (c) re‑examine open‑space percentage and bonus thresholds so the ordinance produces demonstrable, buildable outcomes. Staff said they would prepare draft code language and scenario layouts for commission review (for example, applying proposed rules to a recent illustrative preliminary subdivision to test math and feasibility).

Ending: Commissioners asked staff to return with concrete layouts and numbers showing how proposed changes would affect unit counts, open‑space totals and roadway/utility needs before the commission considers an amendment for public hearing.