State housing law will reshape local zoning, NHCOG staff warn

NHCOG housing staff outlined how a broad state housing bill will change local planning and zoning rules and set deadlines for regional planning work.

Rista, NHCOG housing and downtown specialist, told the council the bill requires towns to allow 2–9-unit and certain mixed-unit housing in commercial zones by summary review — meaning applications can be approved without a public hearing, special permit or variance if they meet nondiscretionary standards. She said municipalities must also revise parking rules for smaller multifamily developments and that the law treats manufactured and mobile homes as single-family dwellings.

The change to summary review removes many procedural barriers, Rista said, but leaves interpretive questions: "What is a commercial or industrial zone?" and "Who decides whether a proposed development will substantially impact public health and safety?" She said the state may promulgate clarifying guidance but that some ambiguities are likely to be litigated or require statutory clarification.

Why it matters: NHCOG members will have to produce a developable land inventory and a regional housing growth plan on a fixed timeline. Rista said the Office of Policy and Management (OPM) and the Connecticut GIS office will provide tools by July 1, 2027, and the COG is required to prepare a developable land inventory for the region (aiming for a December 2026 target) and regional housing growth targets by mid-2027. "We have to send whatever we come up with to OPM for review," she said, adding the local chief executive and planning and zoning commission must approve town plans.

Staff urged towns to begin compiling local land-use and asset data now, including municipal land ownership and constraints such as wetlands, steep slopes, or limited water/sewer capacity. Rista said NHCOG will offer technical assistance and that the newly hired housing/downtown specialist will carry much of the workload.

Members asked technical questions about parking, conservation traffic-mitigation districts, and allowable developer-supplied parking studies. Rista highlighted deadlines and funding sources tied to compliance: some OPM programs and a new Connecticut Municipal Development Authority (CMDA) initiative will prioritize jurisdictions that adopt housing growth plans; certain funding streams (a housing growth program, a 5% school construction reimbursement increase and municipal water-quality loan programs) will be available to municipalities that implement qualifying plans.

Next steps: NHCOG staff said they will refine guidance for towns, collect inventories and data layers, offer town-specific outreach, and include housing updates as a standing agenda item if the board desires. The council did not take a formal vote on policy positions during the meeting but signaled broad interest in providing technical support to member towns.

Ending: NHCOG staff emphasized the tight timeline and the need for local engagement: "We don't need to submit a plan until 06/01/2028, but it's a lot of work," Rista said, urging towns to begin compiling data now.