 How Does this Impact the MFH? Rents are decreasing in Cambridge, in Boston, and nationally. How Does this Impact the Goals and Reality of the Multi-Family Housing Ordinance? Cambridge and Boston are seeing a selective cooling in asking rents, especially in parts of the new luxury market. As we know, rents remain high, home-purchase prices also are high, and the region continues to lose or reprice older housing that has served as rental housing. The rental market is cooling and/or stabilizing —especially at the margin Current rental data are shown in the above chart. These are not contradictory numbers. They measure different universes. Zillow includes all bedrooms and property types in its rental network. RentCafe’s Cambridge estimate is based on large apartment buildings, generally the newest and most professionally managed part of the market. [1][2][3] Cambridge’s rental market is cooling selectively and stabilizing. Newer, higher-priced units have more room to offer concessions or reduce asking prices. Older, well-located, reasonably priced apartments remain scarce and competitive. Cambridge Day’s January 2026 report provides an important earlier benchmark. Using Zumper’s active-listing data, it found that between November and December 2025 the median one-bedroom asking rent fell 0.3% to $2,990, while the median two-bedroom rent remained flat at $3,600. Compared with December 2024, both one- and two-bedroom rents were up only 1.7%. The report also noted that Cambridge had added approximately 3,112 net new housing units since 2018 and that the Cambridge Housing Authority had approved 500 additional apartments over the following five years. [11] Zumper’s Crystal Chen attributed the temporary stability to new supply, slower household formation, and weaker winter demand, while warning that rents could resume growing after the new units were absorbed. In other words, additional housing can provide renters with more choices and bargaining power without making the city broadly affordable—especially if most of the new supply is expensive. More recent studies show much the same thing. Zillow’s Cambridge series shows average asking rents moving from about $3,700 in June and July 2026 to $3,550 in August and $3,450 in September. [1][2] The September market is not simply a demand meter. Much of the academic leasing cycle happens earlier, and by September the remaining inventory may consist disproportionately of apartments that have not leased at the original asking price. In addition, the student market is changing: more students are in university housing, total enrollment is slightly lower, and fewer students are competing for private off-campus apartments. So the seasonal dip is real. Rental prices are not home-purchase prices This discussion must keep rentals and home purchases separate. The Cambridge rental market can soften while the home-purchase market remains extremely expensive. Redfin reported a Cambridge median sale price of approximately $1.21 million for the three months ending August 2026, essentially flat year over year, while the number of homes sold rose sharply. In Boston, Redfin reported a median sale price of approximately $859,000, up 3.4% year over year. Greater Boston July data also showed single-family prices up 1.6% and condominium prices up 3.6%, while inventory remained limited. [3] That is a market in which rental demand can cool modestly while ownership remains out of reach for most renters. High purchase prices keep many households in the rental market even when the technology, university, or biotech labor markets are less exuberant than they were a few years ago. The fact that Cambridge home prices are flat does not make homes affordable. A $1.2 million house with a flat annual price is still a $1.2 million house. Nor does a $100 monthly decline in an advertised apartment make a $3,400 rent accessible to a household earning a normal local wage. Students, Harvard, MIT and biotech are weakening demand: There are real reasons for a mild cooling in rental demand. Cambridge’s 2025 Town Gown report shows that total students at the city’s major institutions declined from approximately 41,523 in the 2023–24 academic year to approximately 41,188 in 2024–25. Students living off campus in non-affiliate housing declined from about 7,932 to 7,634, while university-provided beds increased from roughly 15,612 to 16,156. In other words, private off-campus student demand fell by about 300 students while institutional housing capacity increased. [7] Boston shows a similar pattern. The City of Boston’s housing report found that students living off campus and not at home declined 3.1%, while university-provided housing increased 2.6%. The Boston student population is large, but a greater share is being housed directly by universities or is no longer competing for private apartments at the same level. [7] Harvard’s financial and administrative restructuring is another local demand shock. The Faculty of Arts and Sciences ultimately eliminated 165 positions in 2026. That matters to Cambridge neighborhoods and to particular segments of the rental market, especially furnished apartments and higher-end rentals used by university employees and affiliated households. But 165 positions is not enough to explain the entire regional rent picture. [9] Biotech is also a concern. Massachusetts biopharma employment contracted 3.1% in 2025 to about 113,503 jobs—the first annual decline in more than two decades of tracking. Yet venture capital rebounded in the first half of 2026, with MassBio reporting $3.45 billion in financing, up 25% year over year. Cambridge’s laboratory market remains stressed, with high vacancy, but it also recorded positive net absorption because of a major Sanofi lease extension. [8][9] The conclusion is that some demand has weakened, particularly at the margin. Cambridge has a large existing rental base outside the luxury pipeline Cambridge is not just a collection of new apartment towers. It has an enormous existing rental base in older houses, converted homes, two- and three-family buildings, small apartment buildings, and larger preexisting complexes. Approximately two-thirds of Cambridge households are renter households. The City’s Envision Cambridge housing plan describes a housing stock in which most residential buildings are small—often one to three units—alongside a significant share of the city’s housing in buildings containing 50 or more units. The same plan found that more than 75% of Cambridge homes contained fewer than three bedrooms. [5][6] This produces a housing stock with two important characteristics. First, many rental units are scattered through small buildings and larger homes rather than being concentrated in new, professionally managed apartment complexes. Those units are easy to miss in market reports that track only buildings with 25 or 50 or more apartments. Second, Cambridge has a shortage of family-sized units. A city can add hundreds of studios and one-bedrooms while still failing to provide enough three- and four-bedroom housing for families, roommates, and households that need space. When people say Cambridge has “a lot of rental housing in existing larger homes,” the answer is yes—but with an important qualification. There are many rentals in older houses and small multifamily buildings, but three-bedroom-plus homes are still a minority of the overall stock. They are valuable precisely because they are scarce. Gross new housing can conceal the loss of older rental housing This is the missing chapter in the debate surrounding the interests of the pro-development group ABC, and the 2025 Multifamily Housing, or MFH, upzoning. The pro-development argument is straightforward: Cambridge needs more housing, so every new unit is valuable. That is partly true. But it becomes misleading when a new luxury building is counted as a gain without counting the older units demolished, the tenants displaced, the bedrooms lost, the rent levels erased, or the time required to build the replacement. Cambridge’s own 2026 Annual Housing Review provides a warning. In 2025, the City recorded 18 demolition permits covering 88 housing units. That year was unusually high because 66 units at 221 Mount Auburn Street were in a structurally unsound condominium building. Excluding that exceptional case leaves roughly 22 units in the other demolition permits. [4] The more important figure is what happened on projects involving both demolition and residential construction. Sixteen such projects in 2025 produced a combined net increase of only one unit. That does not mean every project lost housing. Some produced substantial increases. But it shows how easily demolition-dependent development can yield little net housing even when the new building is larger. The City’s project tables include examples such as buildings moving from 1 unit to 1, 3 to 3, 2 to 10, 2 to 34, or 7 to approximately 50. Those projects may improve design, safety, or total capacity. They may also remove older, cheaper apartments and replace them with units priced for a completely different market. The official data do not identify the prior rent, the prior tenure, or whether the new units will be luxury condominiums or market-rate rentals. We should not claim more than the data show. But the data do show that “net new units” is not the same as “net new affordable rental opportunities.” A two-unit home replaced by a four-unit luxury building is a gain in the first category and may be a loss in the second. This is why the City needs a rental-unit and bedroom-count baseline before demolition or major redevelopment. Without that baseline, the public is asked to accept the loss of known existing housing in exchange for promised future housing whose price, timing, and occupancy are uncertain. Airbnb and temporary occupancy are an immediate inventory question. Cambridge’s short-term-rental numbers make this even more important. Read more in our recent research post HERE The City Manager’s June 2026 report states that Cambridge had 216 registered short-term-rental units and estimated approximately 500 unregistered units. The City explicitly warns that unregistered does not automatically mean illegal, but the gap is large enough to show that the City does not have a reliable real-time picture of short-term occupancy. [6] Our earlier listing-based analysis counted approximately 635 active short-term-rental listings. Industry data suggested that roughly 56% were entire-home rentals, implying approximately 350 to 400 whole homes or apartments operating as short-term rentals rather than as ordinary year-round housing. When corporate apartments, furnished executive rentals, relocation housing, and similar temporary occupancy are added, a broader estimate of approximately 575 units is plausible, with a higher range around 700 to 750 depending on definitions. These figures are not interchangeable. One counts listings, another counts registered and estimated unregistered units, and the broader estimate includes categories that are not Airbnb. Nor does every short-term rental represent a unit permanently removed from the housing stock. Some are rented only part of the year; some are operator-occupied; some serve legitimate visiting scholars, researchers, medical professionals, or business travelers. But the policy question is not whether every short-term rental is bad. The question is how many entire homes are unavailable to Cambridge residents for twelve-month occupancy, how many are unregistered or ineligible, and how many are being held in furnished or temporary use because that is more profitable than a normal lease. The City’s own proposed amendments would improve registration, require more documentation, strengthen enforcement, and consider a 90-day annual limit. The City also reports that 65% of surveyed operators said they rented their units only as short-term rentals rather than also renting them long-term. The survey was not a census, but it reinforces the need to distinguish legitimate home-sharing from whole-unit commercial use. [6] This is one of the few housing interventions that could produce results quickly. A citywide registry audit, platform data, proactive compliance staff, meaningful fines, and a pathway back to twelve-month leases could recover existing units faster than a new building can be designed, permitted, financed, and constructed. Senior turnover could help—but only if Cambridge plans for it Over the next decade, Cambridge will experience substantial housing turnover as older residents move to accessible housing, move closer to family, move into supportive settings, or die. The Census Bureau estimates that approximately 12.2% of Cambridge residents are age 65 or older. The City has also spent years studying aging, senior housing, accessibility, and the desire of older residents to remain in Cambridge. [6][10] This future turnover could release larger homes and apartments into the market. Many seniors will age in place. Some homes will be sold to families. Some will be divided into apartments. Some will be acquired by developers, demolished, and replaced with expensive units. Some will become second homes, short-term rentals, or vacant properties held for future appreciation. The policy goal should therefore be to turn demographic change into usable housing supply. That means producing accessible, attractive, and affordable smaller units; offering moving and downsizing assistance; supporting intergenerational and shared housing; helping nonprofit owners acquire older multifamily properties; and making it financially realistic for an older homeowner to move without losing the community, services, and social connections that keep them in Cambridge. Alewife is important Alewife must be part of the long-term housing discussion. The City’s 2026 Annual Housing Review lists the Healthpeak Alewife Quadrangle proposal at approximately 2,300 units, the remaining North Point pipeline at approximately 1,000 units, and Kendall Common at approximately 1,400 units. Together, these large projects represent roughly 5,000 potential future units. [4] But the same report warns that the pipeline is not the same as construction. The Healthpeak proposal was under review in 2026. Some North Point phases were complete while others had not entered construction. Kendall Common’s housing phases had not yet begun construction. The eventual schedule depends on financing, market conditions, permitting, infrastructure, and the economics of the projects. Alewife can help over the long term, especially if it includes meaningful affordable housing, three-bedroom units, and housing that is actually occupied by long-term residents. It cannot replace apartments lost this year. Nor should the existence of a 2,300-unit proposal be used to justify demolition of existing rental homes today. What Cambridge should do now The short-term strategy should begin with preservation and utilization, not with a choice between “build nothing” and “build everything.” Cambridge needs both some new construction and a better accounting of the housing it already has. The first step should be a public housing-utilization ledger. Every residential unit should be classified, as far as legally and practically possible, as a year-round rental, owner-occupied home, legal short-term rental, unregistered or suspected short-term rental, corporate or furnished temporary housing, vacant unit, university housing, or unit under active renovation or construction. The second step should be preservation. Cambridge should create or expand an acquisition and rehabilitation fund for older two- to ten-unit buildings and larger homes already functioning as rentals. A nonprofit or public/social-housing owner should be able to purchase a property before it is demolished or converted into luxury housing, rehabilitate it, and preserve its rental use. The third step should be a real anti-displacement standard for redevelopment. Before demolition, the City should document existing units, bedrooms, rent levels, and tenants. Replacement should be measured by bedroom count and affordability, not just by total unit count. Tenants should receive relocation assistance and a meaningful right to return when a project is rebuilt. The fourth step should be short-term-rental enforcement. Cambridge does not need to prohibit legitimate home-sharing. It does need to identify commercial whole-home rentals, enforce primary-residence rules, require platform cooperation, publish registration data in a usable form, and return eligible units to the long-term market. The fifth step should connect senior housing policy to rental preservation. Cambridge should make it easier for older residents to move into accessible homes while protecting the larger homes they leave from speculative vacancy, demolition, or conversion into high-cost units. Finally, new projects at Alewife, North Point, Kendall Common, and elsewhere should be evaluated by more than their gross unit totals. The City should ask: How many are affordable? How many have two or three bedrooms? How many replace existing homes? How many are occupied by year-round residents? How many are used as corporate or short-term housing? How many can an ordinary Cambridge worker actually afford? The real conclusion Cambridge rents are slowing. They are cooling selectively and seasonally in a market that remains extraordinarily expensive. The evidence points to weaker student demand, university restructuring, and a biotech market that is adjusting rather than disappearing. Those forces can create a little breathing room, especially in new luxury apartments, without solving the underlying affordability crisis. The central mistake in the current housing debate is to count construction while ignoring utilization and displacement. Cambridge may build thousands of units over the next decade. It may also lose hundreds of existing rental homes to demolition, luxury redevelopment, short-term occupancy, corporate housing, or strategic vacancy. Alewife may eventually add a great deal of housing. Senior turnover may eventually release more homes. Neither helps the tenant who loses an apartment this year. The city therefore needs a short-term housing strategy alongside its long-term construction strategy: enforce illegal and unauthorized short-term rentals, preserve older small multifamily buildings, protect tenants during redevelopment, create accessible options for seniors, and measure whether new housing is truly serving long-term residents. The question is not only how many units Cambridge builds. It is how many homes remain available, at what price, for whom, and for how long. Sources [1] Zillow, Cambridge rental-market trends. [2] Zillow, Boston rental-market trends. [3] RentCafe/Yardi Cambridge rental trends, Redfin Cambridge housing market, Redfin Boston housing market, and Greater Boston Association of Realtors July 2026 statistics. [4] City of Cambridge, Annual Housing Review 2026. [5] City of Cambridge, Envision Cambridge Housing Plan. [6] U.S. Census QuickFacts: Cambridge, and City of Cambridge, City Manager’s June 22, 2026 short-term-rental report. [7] City of Cambridge, 2025 Town Gown Report, 2024 Town Gown Report, and City of Boston, Housing Report 2025. [8] Colliers, Greater Boston Multifamily Report Q2 2026 and LPC Boston Lab Market Report Q2 2026. [9] MassBio, 2026 Industry Snapshot and The Harvard Crimson, FAS layoffs. [10] City of Cambridge, Aging in Cambridge. [11] Cambridge Day, “The Cambridge rental market is cooling — for now,” January 9, 2026.
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