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Williamson County planner outlines conservation‑design subdivision approach for Rutherford County
Summary
Williamson County planning director Aaron Holmes told Rutherford County commissioners how conservation‑design subdivisions preserve large swaths of open space while keeping allowable density, showing examples with 60%+ permanent open space and explaining how zoning and resource protections determine the percentage required.
Aaron Holmes, planning director for Williamson County, presented examples of conservation‑design subdivisions and told Rutherford County planners how the approach preserves substantial permanently protected open space while keeping the same overall density allowed by zoning. "So everything that's in the green is open space," Holmes said while showing maps of a recent 356‑acre parent parcel where the minimum permanently protected open space was 213.6 acres, roughly 60% of the site.
Holmes said the required open‑space percentage varies by zoning district and by contained natural resources. "It changed depending upon the zoning district on it," he said, noting minimums can range (for Williamson County) from about 50% in some districts to about 60% in others and can increase above that where resource protections (floodplain, steep slopes, tree canopy) apply. He emphasized that these areas are permanently protected and not available for future subdivision without triggering a new review process.
