Massachusetts bed bug laws put the cost of extermination on the landlord in any building with two or more units, under the State Sanitary Code at 105 CMR 410.550. In a single-family rental the tenant pays, with one important exception: if the landlord let the building fall into disrepair and that disrepair let pests in, the cost shifts back to the owner. Enforcement runs through local boards of health, which can fine landlords up to $500 per violation and, in serious cases, ask a court to appoint a receiver to take over the property.1Cornell Law School. 105 CMR 410.550 – Extermination of Insects, Rodents and Skunks
Who Pays for Extermination
This is the first thing to pin down, because it determines everything that follows. In a building with two or more dwelling units, including rooming houses and homeless shelters, the owner must keep the property free from infestation and pay to eliminate pests. In a single-family rental, that duty falls on the occupant.1Cornell Law School. 105 CMR 410.550 – Extermination of Insects, Rodents and Skunks
The exception for single-family tenants matters. If the landlord failed to maintain structural elements that keep pests out, such as gaps in walls, broken window screens, or unsealed entry points, the landlord pays for extermination even in a single-unit property.1Cornell Law School. 105 CMR 410.550 – Extermination of Insects, Rodents and Skunks If you rent a house and find bed bugs, document the condition of the building before you assume the bill is yours.
In multi-unit buildings, the owner’s duty exists regardless of which tenant may have brought the bugs in. The code treats infestations as the owner’s problem because bed bugs spread between units through shared walls, plumbing chases, and electrical outlets. Lease clauses that try to pass extermination costs on to a tenant in a multi-unit building are unenforceable, because they contradict the code’s minimum habitability standards.
What the Landlord Must Do
Owners of multi-unit properties must hire a pest control professional and cover the cost. When pesticides will be used indoors, the applicator or their employer must give every occupant at least 48 hours’ written notice. That notice has to include the company name and phone number, the proposed treatment date, the specific locations being treated, and the names and active ingredients of the pesticides that may be used.2Mass.gov. 105 CMR 410.000 – Minimum Standards of Fitness for Human Habitation
Before any new tenant moves in, the owner also has to inspect the unit for pests. That duty applies to all residential rentals except homeless shelters, which run on separate inspection schedules.1Cornell Law School. 105 CMR 410.550 – Extermination of Insects, Rodents and Skunks Landlords must keep records of these inspections and show them to the local board of health on request. The records should document what pests were found, what entry points were sealed, any pesticides applied and by whom, and the date and results of follow-up inspections.2Mass.gov. 105 CMR 410.000 – Minimum Standards of Fitness for Human Habitation If you are signing a new lease, you can ask the landlord to show you proof the inspection happened.
Massachusetts does not currently have a statewide law requiring landlords to disclose a unit’s bed bug history to prospective tenants. Some municipalities and some leases include disclosure terms, but no general statute requires it. Bills have been proposed, but as of 2026 none has been enacted.
What the Tenant Must Do
Tenants have their own duties, and ignoring them can complicate your ability to get help. Every occupant must keep the unit in a sanitary condition.1Cornell Law School. 105 CMR 410.550 – Extermination of Insects, Rodents and Skunks Bed bugs are not drawn by dirt, since they feed on blood, but clutter gives them hiding places and makes treatment much harder.
When an exterminator is scheduled, tenants must provide access to the unit and follow the applicator’s preparation instructions.2Mass.gov. 105 CMR 410.000 – Minimum Standards of Fitness for Human Habitation Refusing entry or failing to prepare the unit can derail the treatment and can shift liability back to you. The moment you suspect bed bugs, tell your landlord in writing and keep a copy.
If the Landlord Won’t Act
Massachusetts gives tenants several routes when a landlord ignores a bed bug complaint. You can pursue more than one at a time.
File a Board of Health Complaint
Call the board of health in the city or town where the rental sits. The board can inspect, confirm sanitary code violations, and order the landlord to fix them. If the landlord ignores the order, the board can clean or remediate the premises at the landlord’s expense, remove occupants and close the building, or go to superior court for enforcement, including the appointment of a receiver to manage the property.3General Court of Massachusetts. Massachusetts General Laws Chapter 111 – Section 127B Any cost the board incurs becomes a debt the landlord owes to the municipality, enforceable as a lien on the property.
Withhold Rent
Massachusetts law lets tenants withhold a portion of rent when a landlord fails to address habitability violations, and a bed bug infestation qualifies. This is a strong remedy and a risky one if done wrong. Before withholding any amount, you should have written notice to the landlord, evidence of their failure to act, and ideally a board of health inspection report confirming the violation. Talking to a lawyer or a legal services organization first is strongly advisable. If the landlord files for eviction based on nonpayment, you will need to prove the withholding was justified.
Go to Court
You can file a civil action for damages caused by the infestation, such as medical costs from bites, replacing contaminated belongings, or temporary housing during treatment. The superior court, housing court, and district court all have jurisdiction to enforce the sanitary code.3General Court of Massachusetts. Massachusetts General Laws Chapter 111 – Section 127B When an infestation makes a unit effectively unlivable, you may also have a claim for constructive eviction, which can let you end the lease without penalty.
Retaliation Is Illegal
Some tenants hesitate to report bed bugs because they fear a rent hike or an eviction notice. The law addresses that directly. A landlord who threatens or retaliates against a tenant for reporting a sanitary code violation to the board of health, or for complaining in writing to the landlord, owes damages of at least one month’s rent and up to three months’ rent (or actual damages if greater), plus attorney’s fees.4General Court of Massachusetts. Massachusetts General Laws Chapter 186 – Section 18
If a termination notice, rent increase, or substantial change to lease terms arrives within six months of your complaint, the law presumes retaliation. The landlord then has to prove by clear and convincing evidence that the action was justified independently and would have happened anyway.4General Court of Massachusetts. Massachusetts General Laws Chapter 186 – Section 18 Any lease clause that tries to waive this protection is void.
What the Landlord Risks
A landlord who violates the sanitary code’s pest elimination rules faces fines of $10 to $500 per offense.5Cornell Law School. 105 CMR 410.930 – Penalty for Other Offenses The enabling statute for the code also authorizes penalties up to $500 per violation.6General Court of Massachusetts. Massachusetts General Laws Chapter 111 – Section 127A Each day of non-compliance can count as a separate offense, and the real exposure comes from the enforcement that follows.
When a landlord ignores a board of health order, the escalation moves fast. The board can hire contractors to clean or remediate, bill the landlord, and attach the bill as a lien on the property. Courts can appoint a receiver to take over management of the building.3General Court of Massachusetts. Massachusetts General Laws Chapter 111 – Section 127B For an owner collecting rent on multiple units, losing control of the building to a receiver is a far worse outcome than paying for an exterminator.
Public Housing and Section 8
Tenants in public housing or Section 8 units have additional protections. A unit with bed bugs fails the Housing Quality Standards inspection, because federal regulations require units to be free of vermin.7HUD Exchange. Who Is Responsible for Eradicating Bedbugs in Units The owner is generally responsible for addressing infestations, though a tenant whose failure to keep the unit sanitary contributed to the problem may share liability.
HUD guidance for public housing agencies sets tighter timelines than state law. Agencies should contact the tenant within 24 hours of a bed bug report and inspect the affected unit along with the units above, below, and on each side within three business days. Treatment costs are the agency’s, not the tenant’s. Public housing agencies also cannot deny tenancy based on a prior bed bug infestation or give preference to applicants who have never dealt with one, and lease addenda that conflict with these protections are unenforceable.8U.S. Department of Housing and Urban Development. Guidelines on Bedbug Control and Prevention in Public Housing
Does Renters Insurance Help?
Usually no. Standard renters insurance policies are unlikely to cover bed bug expenses, because insurers generally classify pest infestations as a maintenance issue rather than a sudden loss. That means a contaminated mattress you had to throw out, or a hotel stay while your unit was being treated, probably will not be reimbursed. A few insurers offer optional bed bug riders, but availability and coverage limits vary. Read your policy before you assume you are covered. The sanitary code remains your strongest financial protection, and the way to use it is to document the infestation, notify the landlord in writing, and call the board of health if the landlord does not act.