Cambridge committee backs ‘balanced’ approach to curb very large housing units, staff to draft zoning language

The Cambridge City Council’s Neighborhood Long-Term Planning, Public Facilities, Arts and Celebrations Committee voted unanimously to ask city staff to draft zoning language using a “balanced incentive” approach intended to discourage very large housing units and encourage multifamily development.

The committee’s motion, made by Councilor Nolan and approved 5-0, directs staff to return with draft language and an interim report about market activity by the September 8 or September 15 meeting so the council can consider detailed next steps.

The vote follows a staff presentation that reviewed legal constraints and four high-level policy options for limiting or discouraging oversized units created under the city’s recent multifamily zoning changes. Jeff Roberts, director of zoning and development, told the committee that state law – which staff described variously as “section 3 of chapter 48, the state zoning law (the Dover Amendment),” the MBTA Communities Act (“section 3a”), and the uniformity principle in section 4 – limits what the city can do, particularly if a unit-size rule would disqualify districts required for MBTA Communities Act compliance.

Why it matters: proponents of a unit-size rule say the city needs tools to prevent developers or owners from replacing smaller multifamily buildings with a few very large, expensive units and to preserve housing that households with children can afford and occupy. Opponents and some committee members warned that the multifamily zoning changes are recent, that market responses are still limited, and that overly prescriptive limits could produce unintended consequences or push homeowners into more cumbersome permitting paths.

Roberts summarized the legal constraints and four categories of policy responses staff analyzed: (1) a direct cap on unit size where legally permissible, (2) reintroducing dimensional differences within districts (for example, differing height limits for single‑family versus multifamily), (3) imposing minimum unit counts rather than maximum unit sizes, and (4) a balanced incentive package combining softer dimensional incentives for single‑family properties with specific standards for multifamily projects to encourage more, smaller units. Roberts and the city solicitor cautioned the committee that some tools (notably outright unit‑area caps) could not be applied across all districts because of MBTA Communities Act compliance requirements.

Public commenters presented a range of views. Sarah Hill, a resident of 595 Franklin Street, urged the committee to “limit the size of units built under multifamily zoning, particularly if that means eliminating 3,000 square foot luxury condos,” and argued Cambridge needs housing for families, not more luxury homes. James Zahl (203 Pemberton Street) told the committee that earlier zoning caps had constrained supply and that multifamily zoning offers a way to produce more housing. Justin Safe (259 Hurley Street) thanked staff for the options and urged the committee to move forward so the city can incentivize “more smaller, less expensive units.” Suzanne Blier warned of demolition pressures and raised the Dover Amendment as a constraint she had previously flagged to staff.

Committee members wrestled with trade-offs. Councilor Nolan emphasized the goal of incentivizing multifamily development rather than allowing single large units to proliferate. Councilor Zim said he favored a “soft approach” that would target the largest mansion‑style redevelopments while preserving the ability of homeowners to make reasonable additions. Vice Mayor Mark McGovern warned that smaller units can still be costly and noted market realities that affect how projects “pencil” economically. Councilor Toner urged caution and recommended letting the new multifamily rules settle for a longer period before making major changes.

The committee’s motion, introduced by Councilor Nolan, directs staff to refine the balanced option (Option 4) and return with draft zoning language and a report on development activity by the September committee meeting. City staff confirmed they are scheduled to report back on either September 8 or September 15.

Votes at a glance: The committee voted 5-0 on Councilor Nolan’s motion to pursue the balanced incentive approach and have staff draft zoning language and return in September. Roll call recorded votes: Councilor Zim — Yes; Councilor Nolan — Yes; Councilor Siddiqui — Yes; Councilor Sabrina Wheeler — Yes; Councilor Zuzi — Yes.

Next steps: Staff will prepare draft zoning language reflecting the balanced incentive approach, gather additional data on recent permit applications, and return with an interim report in September. Any zoning petition would later go through the Planning Board and the full council for ordinance action.

Reporting constraints and legal context: Staff repeatedly noted the city’s limited authority in certain areas under state zoning law (described in the meeting as the Dover Amendment and MBTA Communities Act) and the uniformity principle; staff said those constraints shape which districts could include any unit-size limitation and how the city could structure incentives or dimensional controls.

The committee meeting was recorded and included several sign‑ups for public comment; the vote sends staff back to craft specific text that will be publicly posted and routed through the formal zoning and ordinance processes.