By Doug Koplow A longer version of this article is available. Belmont is undergoing a significant rezoning process in response to the state’s MBTA Communities Act, commonly referred to as Section 3A. This law, passed in January 2021, aims to increase housing stock across 177 communities served by the MBTA, including Belmont. It mandates changes to local zoning requirements to allow for increased construction of multifamily housing. It sets quantitative targets for the number of housing units, acreage covered, density, and the minimum size of a rezoned area. Because Belmont is classified as a commuter rail community, we must meet [READ MORE]