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Cambridge, MA Short-Term Rentals: Occupancy Limits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Operator-occupied cap
1 dwelling unit per operator
Bedroom cap
3 individual bedrooms per unit
Owner-adjacent cap
1 additional unit per operator
Minimum stay
10 consecutive hours
Bedroom ceiling
Capped at lawful bedroom count

Summary

Cambridge caps each short-term rental operator at one operator-occupied unit, with no more than three individual bedrooms rented out, plus at most one separate owner-adjacent unit citywide.

A short-term rental operator may make available no more than one (1) dwelling unit for operator-occupied short-term rentals, which may include the separate short-term rental of no more than three (3) individual bedrooms, and one (1) dwelling unit for owner-adjacent short-term rentals.

Full Breakdown

64, item 3, which requires every rented unit or bedroom to comply with building code occupancy requirements. 64, item 4 layers on compliance with any additional standards the Commissioner of Inspectional Services promulgates. Together these provisions mean an operator cannot run a portfolio of Cambridge short-term rentals: the Ordinance limits participation to a single operator-occupied home (with up to three bedrooms let separately) plus, at most, one additional owner-adjacent unit in a building of four units or fewer that the operator wholly owns. 64, item 11 bars rentals of less than ten consecutive hours or at hourly rates, and commercial meetings and uses are barred outright under item 12.

Violations & Fines

Offering more than one operator-occupied unit, more than three bedrooms within it, more than one owner-adjacent unit, or more bedrooms than the dwelling lawfully contains violates Section 4.64, items 5 and 10; Inspectional Services can deny or revoke the certificate of registration issued under Section 4.67 for a unit found out of compliance.

Frequently Asked Questions

How many bedrooms can I rent out short-term in my Cambridge home?
Up to three individual bedrooms in your primary residence, per Section 4.64, item 5, and never more bedrooms than the unit lawfully has, per item 10.
Can I offer more than one short-term rental unit in Cambridge?
No. Section 4.64, item 5 limits an operator to one operator-occupied unit plus, at most, one owner-adjacent unit; you cannot stack additional units under the same registration.
Is there a minimum rental length in Cambridge?
Yes. Section 4.64, item 11 prohibits renting by the hour or for stays under ten consecutive hours, and item 12 bars commercial meetings or uses in any short-term rental.

Sources & Official References

Other rules in Cambridge

All Cambridge rules

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Occupancy Limits in Nearby Cities

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