Lease Agreements

Can a landlord charge additional pet fees after move-in?

Massachusetts rental guidance and tenant-landlord operational information.
Published March 26, 2026 State-specific rental guidance Update This Question
Reviewed by Tenants & Landlords Editorial Team

This rental guidance was reviewed by the Tenants & Landlords Intelligence Team, specializing in lease agreements, notices, rent disputes, deposits, evictions, and tenant-landlord operational procedures.

Asked 69 days ago · Massachusetts

Can a Landlord Charge Additional Pet Fees After Move-In in Massachusetts?

In Massachusetts, issues concerning pet fees and charges in rental agreements are governed by both state laws and the terms outlined in the lease agreement between the landlord and tenant. Understanding when and how a landlord can charge additional pet fees after move-in is essential for tenants to protect their rights and avoid unexpected expenses.


Overview of Pet Fees in Massachusetts Rental Agreements

Pet fees typically include any additional charges landlords impose for tenants having pets on the property. These fees may appear in the lease as a pet deposit, monthly pet rent, or a one-time pet fee. The ability to charge these fees, and under what conditions, depends largely on the lease terms and state regulations.


Key Points Regarding Pet Fees and Charges in Massachusetts

1. Lease Agreement Terms Are Crucial

  • Massachusetts law requires that all fees, including pet-related charges, must be clearly disclosed and agreed upon in the lease or rental agreement before the tenancy begins.
  • If the lease includes a pet fee or pet rent, the tenant is responsible for paying these amounts as outlined.
  • If the lease is silent on pets but a landlord grants permission for a pet later, the introduction of additional fees should generally be agreed upon in writing.
2. Charging Additional Fees After Move-In
  • No automatic right to additional charges
A landlord in Massachusetts cannot unilaterally impose new pet fees or increase existing fees after the lease is signed unless the tenant agrees to the change. Any modification to fees generally requires written consent from the tenant.
  • Amending the Lease
To charge new or increased pet fees after move-in, the landlord must amend the lease with the tenant’s approval. This amendment should be documented in writing, specifying the fee amount, payment schedule, and any other conditions.
  • Verbal Agreements Are Not Recommended
While a verbal agreement might hold some weight, it is not advisable. Written agreements protect both parties and provide clear evidence of what was agreed upon.

3. Security Deposits and Pet Deposits

  • Massachusetts law permits landlords to charge a security deposit up to one month’s rent, plus a separate possible “last month’s rent” deposit. However, it does not specifically allow for separate pet deposits beyond the security deposit unless outlined in the lease.
  • Any pet deposit or pet fee must be disclosed upfront in the lease; landlords cannot demand an additional pet deposit or fee after the tenant takes possession without tenant consent.
4. Pet Rent
  • Some landlords may include monthly pet rent as part of the lease. This fee helps cover potential wear and tear caused by pets.
  • If pet rent is included in the lease, tenants agree to this payment upfront.
  • Again, landlords cannot impose additional monthly pet rent after move-in unless the tenant agrees to amend the lease.
5. Service Animals and Emotional Support Animals
  • Massachusetts landlords cannot charge pet fees for service animals or emotional support animals, as these are protected under the Fair Housing Act and Massachusetts anti-discrimination laws.
  • If a tenant acquires a service or emotional support animal after move-in, landlords cannot impose pet fees related to these animals.

Practical Steps for Tenants Regarding Pet Fees After Move-In

If you are a Massachusetts tenant concerned about whether your landlord can charge additional pet fees after move-in, here are important actions to consider:

  • Review Your Lease Carefully
Confirm if the lease mentions any pet fees, deposits, or pet rent and under what conditions these fees apply.
  • Request Written Documentation for Any Changes
If your landlord asks for additional pet fees or higher fees after the lease has started, ask for a written lease amendment outlining the specific changes.
  • Negotiate If Necessary
You have the right to negotiate any new fees. If you disagree with the additional charges, you may decline to accept the lease amendment.
  • Keep Records
Always keep copies of your lease, any amendments, and written communications related to pet fees.
  • Seek Assistance
If disputes arise, Massachusetts tenants can contact local tenant advocacy groups or seek legal advice to understand their rights related to lease agreements and pet fees.

Summary

In Massachusetts, landlords cannot simply charge additional pet fees after move-in without the tenant’s written agreement to modify the lease. Any pet fees, deposits, or rents must be clearly stated in the lease prior to the tenancy beginning or mutually agreed upon through a written amendment afterward. Furthermore, service and emotional support animals are exempt from pet fees. Tenants are encouraged to handle any proposed changes to pet fees cautiously and with documentation to ensure their rights are protected throughout their tenancy.


By understanding these important points about pet fees in Massachusetts, tenants can better navigate lease agreements and avoid unexpected financial burdens after moving into their rental property.

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