Understand Cambridge before you commit to an address

What buying in Cambridge actually involves

Cambridge charges residents $6.67 per $1,000, the lowest published residential rate in the Commonwealth, and then takes a further $510,208 off every owner-occupied parcel. A resident owner ends up paying 0.35% of the purchase price, which is less than half what a Lexington owner pays ten miles up the road and less than a third of what a Belmont owner pays across the town line. The bill on the typical Cambridge home value works out to about $3,700 a year on a house worth just over a million dollars.

None of that is generosity and all of it is the commercial roll. Kendall Square and Alewife carry a commercial and industrial base large enough that Cambridge can charge business $14.07 and still fund a full municipal budget, and the residential exemption on top is what the city does with the room that creates. The corollary is uncomfortable and worth stating: the low rate is a measure of the lab space, and the lab space is not guaranteed. Life science values in this market depreciated sharply between fiscal 2025 and fiscal 2026 and several large buildings nearby are empty. If that base shrinks, the residential rate is the variable that moves.

The housing is old, small and expensive in that order. Much of it is two- and three-family wood frame from between 1890 and 1930, a great deal of it since converted to condominiums, and a Cambridge condominium is frequently one floor of a house with two neighbors and a trustee who is one of them. Ask who has been maintaining the roof and how, because in a three-unit association the answer is usually an informal arrangement rather than a funded reserve.

Cambridge has also gone further on zoning than anywhere else in the metro, ending single-family-only districts citywide and allowing multifamily by right across the city. What that does to prices is genuinely contested and will not be visible for years. What it does to a buyer today is simpler: the house next to yours can be replaced by something taller, and the deed will not tell you.

Moving to Cambridge: check these before you commit

• The residential exemption filing, worth about $3,400 a year here and forfeited entirely by missing 1 April
• For a converted two- or three-family: whether the association has a funded reserve or an understanding between neighbors
• What is allowed by right on the abutting lots under the current zoning, which changed recently and substantially
• The parking situation in writing, since a deeded space and a resident permit are different assets and only one transfers
• Age of the heating system and whether the house has ever been insulated, because the stock predates any of it
• How much of the price is the land, in a city where the building is often the least valuable part

Cambridge publishes a residential rate of $7 per $1,000 for fiscal 2026 and takes $510,208 of assessed value off an owner-occupied parcel, a local option under MGL c.59 s.5C that it votes again every autumn. Business pays $14, a classification shift of 2.11 to one. Both figures are what the municipality adopted and the Department of Revenue certified, rather than anything assembled on this site.