Weston Unified Plan Committee Receives MAPC Demographic Projections, Defers Adoption Decision

WESTON -- June 8, 2026, Weston Unified Plan Committee hears competing demographic projections and debates whether outside models should drive planning goals. At its June 8 meeting, the committee received a presentation from Sarah Philbrick, research manager at the Metropolitan Area Planning Council, comparing MAPC's UrbanSim-based household projections with population projections from the UMass Donahue Institute, both running to 2050. MAPC's model, which holds zoning constant and tracks only permitted projects of six or more units through its MassBuilds inventory, projects relatively modest growth for Weston, which has permitted fewer than 30 net new single-family units per year since 2010. UMDI's methodology, based on municipal birth, death, and migration data from the Department of Public Health, produces a notably higher estimate, particularly for the 40-to-54 and 85-plus cohorts. Member Bob Scott argued the causality runs in reverse: "The number of people will be equal to the number of houses." New member Adrienne Giske, an architect and planner, challenged the permit data's completeness, noting several 40B multifamily projects from the 1990s through 2010 that may not appear in the digitized record. The committee adjourned unanimously and set July 13 at 4 p.m. as its next meeting, where members are expected to settle on a projection range to anchor the unified plan's recommendations.