RetaliationTenant RightsMassachusettsM.G.L. c. 186Eviction DefenseRenters Guide

Retaliation Is Illegal: How Massachusetts Protects Tenants Who Speak Up

If your rent goes up or you get a termination notice within 6 months of reporting a problem, Massachusetts law presumes your landlord is retaliating — and the burden shifts to them to prove otherwise.

July 31, 2026
7 min read
Boston Property NavigatorEditorial Team

M.G.L. c. 186 §18 makes it illegal for a Massachusetts landlord to retaliate against a tenant for reporting code violations, joining a tenants' union, or asserting other legal rights — and creates a powerful 6-month presumption in the tenant's favor.

🚫

BLUF: The 6-Month Presumption

If a Massachusetts landlord raises your rent, sends a termination notice, or otherwise changes your tenancy within 6 months of you reporting a code violation or asserting a legal right, the law presumes it's retaliation — and your landlord has to prove it isn't. This is one of the strongest tenant protections in Massachusetts law (M.G.L. c. 186 §18), and it applies even if the landlord only threatens the adverse action.

🛡️What Counts as a Protected Activity

  • Reporting a suspected health or building code violation to the board of health, a housing inspector, or your landlord directly (in writing)
  • Filing or pursuing a lawsuit or administrative action to enforce a law regulating residential premises
  • Organizing or joining a tenants' union or similar organization
  • Requesting a health inspection or complying with an inspector's request for access
  • Paying rent to a utility company when your landlord failed to pay a utility bill they were responsible for
  • Filing a discrimination complaint against your landlord with a government agency
  • Defending yourself in an eviction case, including raising a habitability or discrimination defense

What Counts as Retaliation

The law is broad on purpose. It covers not just actually evicting you, but also threatening to — a landlord who says "you can leave if you don't like it here" right after you complain about a violation may already be violating the statute. The most commonly litigated triggers are:

  • Serving a notice of termination
  • Raising the rent
  • Making a substantial change to the terms of your tenancy

If any of these happen within six months of a protected activity, Massachusetts law presumes retaliation. The landlord then has the burden of proving a legitimate, non-retaliatory reason — it's not on you to prove retaliation first.

⏱️

After six months, the presumption flips

Outside the 6-month window, you can still argue retaliation — but you carry the burden of proving it, rather than the landlord having to disprove it. Document the timeline carefully either way: dates of your complaint, dates of any landlord response, and dates of the adverse action.

💵What You Can Recover

RemedyAmount

Statutory damages

Not less than 1 month's rent, up to 3 months' rent, or actual damages — whichever is greatest

Costs and attorney's fees

Reasonable attorney's fees and court costs, in addition to damages

Eviction defense

Retaliation is a full defense to an eviction case under M.G.L. c. 239 §2A — can defeat the eviction outright

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Two statutes work together here: c. 186 §18 creates the civil claim and damages, and c. 239 §2A lets you raise retaliation as a defense if the landlord tries to evict you. Either way, any lease clause attempting to waive these protections is void and unenforceable — you can't sign this right away.

📝How to Protect Yourself

  • Put every complaint in writing — email or letter — and keep a copy, even if you also call or speak in person.
  • Note the date of your complaint and the date of any subsequent notice, rent increase, or lease change.
  • If a rent increase follows a complaint within 6 months, you can generally refuse to pay the increased portion; if the landlord tries to evict you for it, they carry the burden of proving it wasn't retaliatory.
  • If you're served with a notice or increase you believe is retaliatory, raise it immediately with legal aid — see our Find an Attorney guide — since the presumption is time-limited to 6 months.
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Not legal advice

This is general information about Massachusetts anti-retaliation law, not legal advice, and not a guarantee of any outcome. Retaliation cases turn heavily on timing and documentation — consult a licensed Massachusetts attorney about your specific situation.

Sources

  1. M.G.L. c. 186, §18 — Reprisal for reporting violations of law
  2. M.G.L. c. 239, §2A — Retaliation as a defense to eviction
  3. MassLegalHelp — Illegal Retaliatory Rent Increases

Reported a violation and now facing retaliation?

File a complaint or get free legal help — the 6-month presumption works in your favor.

Read the File a Complaint guide
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