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Planning Commission reviews proposed changes to impervious cover limits; debate centers on driveways and gravel
Summary
Planning staff presented proposed CDO amendments to change impervious cover maximums by zone and add exceptions; commissioners debated driveway definitions, gravel surfaces and rural impacts.
At the May administrative meeting, planning staff updated the Planning Commission on ZOA-25-2, a proposed text amendment to the County Development Ordinance (CDO) that would revise maximum impervious cover limits by zoning category and add clarifying exceptions.
Why it matters: the amendment is intended to reduce the number of variances sought for impervious coverage, align rules with stormwater goals, and make administration more predictable. Changes would affect how much of a lot may be covered by roofs, driveways, parking areas and other hard surfaces—factors that influence stormwater runoff, buildability and property design.
Summary of the proposal Staff said the draft separates lots by acreage bands (for example, 0–2.5 acres, 5–20 acres, and over 20 acres) and adjusts percentage and square-foot caps by zone (AGR, FOR, CVR, R and H, residential and others). Staff added superscript exceptions and revised the impervious‑cover exception section (8.13)…
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