A buyer touring a two-family on a quiet Cambridgeport side street this summer heard something at the open house that had nothing to do with the listing. Two blocks over, on Allston Street, an excavator was pulling apart an older two-family home. By fall it will be two townhouses, likely priced well over $2 million each, according to City Councillor Cathie Zusy, who has been documenting the demolition on social media. The buyer wanted to know one thing before writing an offer: is this happening on every block, or just that one?
That question is the right one to ask, and the honest answer is more specific than the headlines have made it sound.
The reform, briefly
On February 10, 2025, the Cambridge City Council voted 8 to 1 to end single- and two-family-only zoning citywide. The new rules allow four-story multifamily buildings by right in every residential district except open space, no special permit required. On lots of at least 5,000 square feet, a developer can go to six stories if 20 percent of the residential floor area is set aside as permanently affordable housing. It was one of the most sweeping zoning changes any Massachusetts city has made, and it took effect immediately.
A year and a half in, the reform has generated two very different stories, and the gap between them is the actual story worth understanding if you are comparing Cambridge to a neighboring town, or trying to figure out whether the house next door to the one you are considering could become a construction site.
The number that got repeated, and the number that didn't
Earlier this year, a claim circulated that 148 projects were in the pipeline citywide, with the implication that 148 or more existing houses were headed for demolition. It spread fast, because it fit the fear that had shaped the debate from the start.
Councillor Marc McGovern went to the city's Inspectional Services Department to check. As of late May 2026, the city had issued 22 full demolition permits. Not 148. Several of those 22 were for 100 percent subsidized buildings built under Cambridge's separate Affordable Housing Overlay, meaning they had nothing to do with the multifamily zoning ordinance at all. A second number, 312 inquiries to the Cambridge Historical Commission since February 2025, got read the same alarmed way, as if 312 historic homes were on the chopping block. The Historical Commission's own accounting shows those inquiries produced 59 actual permits.
So the panic number and the verified number are not close. But that is not the whole picture either, and treating 22 as the final word would be its own kind of mistake.
Councillor Zusy runs her own tracker, built from resident tips and city permitting records. As of early June 2026, it showed 98 projects at some stage of development, with another 46 sites she describes as "heating up." The Boston Globe's reporting in July 2026, drawing on that same tracker, put the number of early-stage sites above 70, representing more than 600 potential new homes, and noted the city had already permitted around 400 new homes so far this year, many of them small and midsized multifamily projects that simply were not legal to build before February 2025.
None of these numbers actually contradict each other once you notice they are counting different things. A full demolition permit is a narrow, specific filing. A project "in the pipeline" can mean anything from a poured foundation to an architect's early sketch shown at a single community meeting. Four hundred permitted homes includes additions, conversions, and small multifamily infill that never required tearing anything down. The 22 is real. The 400 is also real. They are answers to different questions, and a lot of the public argument over this ordinance has come from people asking one question and citing an answer to the other.
The teardowns that are real
Some of what critics feared is happening, and it has names and addresses attached.
At 9 Wyman Road in Huron Village, a developer wants to demolish a single-family house on a small cul-de-sac and replace it with a six-story, 56-unit building, almost entirely studios and one-bedrooms. Neighbors launched a "Stop 9 Wyman" campaign and petitioned the Historical Commission for landmark status. The commission recommended against an automatic landmark finding in May, though a formal decision would only come if a demolition application is actually filed. On Western Avenue near Central Square, the long-running A.J. Spears Funeral Home is slated to come down for a six-story building with as many as 74 units. And on Allston Street in Cambridgeport, that two-family teardown was one of at least eight projects underway or pending from a single developer, Contempo Builders, run by Mike Tokatlyan.
"What we've essentially done is strip away all of the guardrails and let the free market decide what kind of housing gets built and where," Zusy said. "And not all of the projects are bad, but many of them are replacing good, relatively affordable old homes with more expensive ones."
Councillor McGovern sees the same set of facts and draws the opposite conclusion.
"If we are serious about building enough housing to support the demand to live in our city and stabilize prices, then we have to be building new homes of all sizes in every corner of the city," he said. "We set out to spur more housing construction in Cambridge. As far as I'm concerned, we've achieved that."
Both are describing something true. The disagreement is about whether the scale of what is happening is a crisis or a proof of concept.
The math that actually decides which houses are at risk
Here is the part of the story that gets lost when the debate turns into a shouting match over pipeline numbers: not every house in Cambridge is an equally attractive redevelopment target, and the reason has nothing to do with sentiment or historic character. It comes down to arithmetic.
A Better Cambridge, the advocacy group that pushed for the reform, laid this out plainly in its own explainer. Redevelopment only makes financial sense when a property's existing improvement value is low relative to what the land could support. Most two-story homes, and virtually all triple-deckers, are already too valuable as they stand. Adding three or four more stories to a building that already occupies most of its lot does not generate enough new square footage to justify the construction cost. The city's own staff analysis reached the same conclusion: most parcels will not be redeveloped above the existing baseline, even under the new rules, because the project would be unprofitable.
The properties where the math works are a narrower category: an underbuilt single-family or two-family house sitting on a comparatively large lot, in a location where the land itself has become more valuable than the structure on it. A Better Cambridge's own example is a small single-family house on a large lot becoming a six-story, ten-unit building with two affordable units. That is a description of 9 Wyman Road, and it is a description of the Allston Street two-family, and it is not a description of a triple-decker packed onto a standard 3,000-square-foot Cambridgeport lot.
Zusy's tracker backs this up geographically. The projects she has logged cluster in North Cambridge, Cambridgeport, West Cambridge, Neighborhood Nine, Mid Cambridge, and Riverside, areas with a meaningful stock of older single-family and two-family homes on larger-than-typical parcels. The density-heavy, triple-decker-dominated blocks elsewhere in the city are not showing up in the same numbers, and the arithmetic above explains why.
What this means if you are choosing where to buy
If you are weighing a Cambridge property against something in Somerville or Watertown, the zoning reform itself is not the risk factor. The risk factor, if there is one, is specific to the lot next door and what sits on it. A few questions do more work than a citywide anxiety:
- Is the neighboring property a single-family or two-family home on a lot noticeably larger than the block's average, in a neighborhood where land values have been rising faster than the value of older housing stock?
- Is it in one of the six neighborhoods where Zusy's tracker shows the most activity, or in a denser area dominated by triple-deckers that are already built out?
- Has the property already drawn a Historical Commission inquiry or a community meeting notice, which are the earliest signals before anything moves toward a permit?
None of these questions require guessing. They are answerable from public permitting records and from simply walking the block. A buyer worried about the house next door in a triple-decker-heavy stretch of Cambridgeport is worrying about the wrong thing. A buyer eyeing an underbuilt single-family lot in North Cambridge, whether as a purchase for themselves or as an investment property, is looking at exactly the kind of parcel where this ordinance was designed to change the outcome.
If you are trying to sort out what a specific address means under these rules, or comparing what your budget buys across Cambridge, Somerville, Arlington, and the other inner suburbs Laurie Crane can walk through the specifics with you. Request a personalized market consultation and bring the address. The math is knowable well before you make an offer.
