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Planning commission works on state‑mandated ADU changes; parking waivers and size limits central
Summary
Planning staff and commission members reviewed state requirements and options for accessory dwelling units (ADUs), including whether to allow attached ADUs in single‑family zones, maximum sizes (state cap at 75% of principal dwelling but local guidance generally targets ~800 sq ft), and parking waiver processes; a draft code will be prepared for council consideration ahead of the October 2026 compliance deadline.
The Centreville planning commission met in a work session (reported to council March 5) to review state legislation that requires local code updates to permit accessory dwelling units (ADUs).
Peter Flint, the town’s zoning administrator, reviewed the commission discussion: whether ADUs should be allowed in single‑family zoning districts, distinctions between attached and detached ADUs, size limits (the state’s statute defines a maximum as up to 75% of the primary dwelling but local practice often keeps detached ADUs smaller — commonly near 800 square feet), and setbacks. The state requires that local rules not impose larger setbacks than for accessory structures, and it encourages waivers for additional off‑street parking to avoid parking becoming a barrier to ADU creation.
Commissioners asked for further analysis of local parking (a parking study is being planned) and discussed how to phase code changes in light of expected new residential development. Staff said a draft code amendment will be prepared for review; the state deadline to adopt conforming rules is October 2026.
Next steps: Peter Flint and staff will prepare a draft ordinance and related materials for the commission and council to consider, including options for size limits, parking waivers and administrative pathways for new construction and conversions.
