Aidan Pollard Feb 16, 2021 The change would reduce the allowable density in Marion from 12 units per acre to six, which is similar to the current density of housing in town. MARION — In an effort to curb potential for dense housing that Board Chair William Saltonstall said could "scar the Marion landscape," the Planning Board has moved forward a bylaw change which would restrict high-density housing developments. The change would reduce the allowable density in Marion from 12 units per acre to six, which is similar to the current density of housing in town. For instance, the single family houses at Marion Village Estates were developed around six units per acre, and many of the houses on Main Street are also on lots which measure out to about six houses per acre.