Executive Summary The New England multifamily market remains fundamentally supply-constrained as we enter June 2026. Regulatory shifts are the primary driver of market dynamics this week. New Hampshire’s statewide “by-right” ADU mandate (effective July 1) is unlocking hidden density for single-family and small multifamily investors [1]. In Massachusetts, Worcester’s 12,000-unit housing push is colliding with new inclusionary zoning rules [2], while Lowell’s zoning audit has triggered a temporary moratorium on new permissions [3]. On the Cape, functional zero vacancy continues to drive extreme affordability issues, prompting new middle-income projects in Hyannis [4]. Hartford is seeing major mixed-use developments push forward despite broader state-level zoning reform delays [5]. Meanwhile, Lewiston, ME continues to tighten, with a 2% vacancy rate driving a +7% YoY rent growth and a surge in downtown development [6]