State rules
No cap (rent control is barred statewide). Notice of at least one rental period / 30 days. Massachusetts gives tenants one of the nation's strongest retaliation presumptions — six months.
| Amount cap | No cap on the amount. |
|---|---|
| Notice for an increase | 30 days' written notice for a change in a month-to-month tenancy. |
| Frequency | No statewide frequency limit beyond the notice and lease rules. |
| Retaliation window | 180 days — an increase inside it is presumed retaliatory. |
| Local rent caps | Not barred statewide; check your city. |
| Sources | Mass. Gen. Laws ch. 186, § 12 |
Park rules sit in ch. 140, § 32A et seq. and Attorney General regulations; no lot-rent cap.
Rules checked October 2026
Sources: Mass. Gen. Laws ch. 186, § 12. Information, not legal advice.