Planning board narrows ECBD addendum: studios capped, three-bedrooms allowed only where affordable-housing rules require them

The Somerville Planning Board discussed a draft addendum to the Eastern Central Business District (ECBD) redevelopment plan on Dec. 10, focusing on clarity for lots and blocks, gross floor area calculations and unit-mix rules.

Planner Mike said the addendum is intended to make the concept plan readable without requiring users to drill into the redevelopment plan or land-use ordinance: "Try to make it so that it's clear," he said, noting the draft specifies that a parking deck is excluded from GFA calculations. The planner highlighted the intent to keep the project at the previously discussed massing and the existing 800,000-square-foot cap.

Board members focused on the unit mix. One member asked about a provision (roman numeral 3(a)(2)) that appeared confusing and whether three-bedroom units would count toward the project's percentage limits. Mike explained that three-bedroom affordable units required by fair-share rules would be permitted but not counted toward the 3% cap. After discussion, the board agreed to limit the 3% allotment to studios only, and to allow three-bedroom units only if required by affordable-housing obligations.

The environmental commission requested stronger tree requirements for the gateway: a larger minimum caliper and closer spacing to avoid a "Whoville" look. The planner agreed to raise the minimum caliper to 4 inches, define where it is measured, and add language on engineered soil for root growth and spacing flexibility where underground utilities constrain planting.

The planner said he will issue a revised draft with clarified sidewalk/setback language and highlight changes in red for the board's review at a future meeting.