Pet Addendum Fees: What's Legal in My State?

Three kinds of pet charges

Leases sometimes mix these terms. Read what each charge actually does, especially whether it is refundable.

• Pet deposit: a refundable amount held to cover pet damage, returned at the end if no damage.
• Pet fee: a one-time, non-refundable charge for having a pet.
• Pet rent: an additional monthly amount added to your rent.

Does a pet deposit count toward the security deposit cap?

Many states cap security deposits, commonly at one or two months' rent. In many of those states, a pet deposit counts toward the total cap. If your regular deposit already equals the limit, an additional pet deposit may be unlawful. Some states set a separate or higher limit for tenants with pets. Check the rule where you live; our guide to deposit limits by state has more detail.

Non-refundable pet fees

Some states treat any non-refundable fee collected at the start of a tenancy as part of the security deposit, which means it must be refundable. California, for example, generally does not allow non-refundable deposits. Other states allow reasonable one-time pet fees. If your lease charges a non-refundable fee, check whether your state allows it.

Is monthly pet rent legal?

Monthly pet rent is generally legal because it is part of rent. Some cities with rent control or stabilisation rules may limit it. It is also negotiable: landlords often reduce or waive pet rent for well-behaved older pets or long-term tenants.

Assistance animals

Under the federal Fair Housing Act, housing providers must make reasonable accommodations for tenants with disabilities who need assistance animals, including service animals and emotional support animals. Assistance animals are not pets. Landlords generally cannot charge pet deposits, pet fees or pet rent for them, although tenants remain responsible for any actual damage the animal causes. Landlords may ask for reliable documentation of the disability-related need when the disability or need is not obvious.

Which laws limit pet charges and pet rules?

The rule on assistance animals comes from the Fair Housing Act itself, which makes it unlawful to refuse reasonable accommodations in rules, policies, practices or services when they are needed to give a person with a disability equal opportunity to use a dwelling, 42 U.S.C. § 3604(f)(3)(B). HUD's regulation on reasonable accommodations is at 24 C.F.R. § 100.204. One change worth knowing as of 2026: HUD withdrew its 2020 assistance animal guidance notice, FHEO-2020-01, in September 2025, and a May 2026 HUD memo cancelled it permanently, saying HUD will generally find cause on a pet-policy complaint only where the animal is individually trained to perform tasks related to the person's disability. The statute and regulation still apply, and state laws and private lawsuits may still protect emotional support animals, so check your state's rules before you rely on either side's reading.

For ordinary pets, state deposit law does most of the work. California Civil Code § 1950.5 treats any up-front payment held as security as part of the deposit, caps the total at one month's rent for most landlords for deposits collected on or after July 1, 2024, and in § 1950.5(n) forbids labeling any of it nonrefundable. A separate pet deposit therefore counts toward the cap. Massachusetts General Laws chapter 186, § 15B, limits up-front charges to first month's rent, last month's rent, a deposit no larger than one month's rent, and a lock fee, which leaves no room for a separate pet deposit.

New York City has an unusual rule in the other direction. Under Administrative Code § 27-2009.1, if a tenant keeps a pet openly for three months or more, the landlord or its agent knows, and the landlord does not start a legal proceeding within that time, the no-pet clause is waived for that type of pet for the rest of the tenancy.

Before you sign a pet addendum, total the deposit and any pet deposit against your state's cap, and if your animal is an assistance animal, put your accommodation request in writing.

Other pet addendum terms

• Breed, size and weight restrictions, which may be affected by the landlord's insurance.
• Limits on the number of pets.
• Vaccination, licensing and registration requirements.
• Rules on waste, noise, leashes and common areas.
• Liability for damage and injuries, sometimes with a renter's insurance requirement.
• Consequences for unauthorized pets, such as fees or lease violations.

Can a landlord fine me for an unauthorized pet?

Leases sometimes impose large fines for keeping an unapproved pet. Some states limit lease penalties that are not tied to actual loss. Getting a pet approved in writing before it moves in is always better than negotiating after.

A worked example

Elena's lease requires a $2,000 security deposit, equal to one month's rent, plus a $500 pet deposit and a $300 non-refundable pet fee. Her state caps deposits at one month's rent and treats non-refundable fees as deposits. Together, the charges exceed the cap. She asks for the pet deposit to be folded into the existing deposit and the fee removed, citing the state limit, and the landlord agrees.

Sample request wording

"I would like to discuss the pet charges in the addendum. Under [state] law, security deposits, including pet deposits and non-refundable fees collected at move-in, are limited to [limit]. Could we adjust the pet deposit and remove the non-refundable fee so the total stays within that limit? I am happy to provide proof of my pet's vaccinations and renter's insurance."

Common mistakes

• Assuming a non-refundable fee is legal because it is in the lease.
• Paying pet charges for an assistance animal.
• Not checking whether pet deposits count toward the deposit cap.
• Bringing a pet in before getting written approval.
• Not documenting the pet's condition impact at move-out.

Quick checklist

• Is each charge a refundable deposit, a fee or rent?
• Does your state cap deposits, and do pet deposits count?
• Does your state allow non-refundable fees?
• Is your animal an assistance animal?
• What restrictions and liability terms apply?

Key terms explained

These terms appear in most pet addendums.

• Pet addendum: an attachment to the lease with pet rules and charges.
• Pet deposit: a refundable amount held against pet damage.
• Pet fee: a one-time non-refundable charge.
• Pet rent: a monthly charge added to rent.
• Assistance animal: a service or support animal needed because of a disability, not a pet.
• Reasonable accommodation: a change to rules or policies to allow a person with a disability equal use of housing.

Pet damage at move-out

At the end of the tenancy, the landlord may deduct actual pet damage from the pet deposit and the general deposit, such as scratched doors, chewed trim or stained carpet, but not normal wear and tear. A pet fee that was non-refundable does not usually cover damage, so the landlord may still charge for damage separately if the lease says so. Photos at move-in and move-out are just as important for pet damage as for any other deduction.

Renter's insurance and liability

Many pet addendums require renter's insurance with liability coverage, sometimes naming the landlord as an interested party. Check whether your policy covers your specific pet, because some insurers exclude certain breeds or animals with bite histories. Liability coverage protects you if your pet injures someone, which the addendum usually makes your responsibility.

Assistance animal requests

To request an assistance animal accommodation, tell the landlord in writing that you have a disability-related need for the animal. If the disability or need is not obvious, the landlord may ask for reliable documentation, such as a letter from a health care provider who knows you. The landlord generally cannot demand details of your diagnosis, charge pet fees or apply breed or weight restrictions, though it may deny an animal that poses a direct threat or would cause substantial damage that cannot be reduced. HUD guidance explains these rules in more detail.

Negotiating pet terms

Pet charges are often negotiable, especially for tenants with good references. Offer a pet reference from a previous landlord, proof of training or vaccination, or a slightly higher deposit within the legal cap in exchange for waiving pet rent.

Questions to ask the landlord

Ask which charges are refundable, whether pet deposits count toward the deposit cap, whether pet rent can be waived for a larger deposit and how assistance animal requests are handled.

A second example: the second pet

Sam adds a second cat mid-lease. The addendum requires approval and an extra $300 deposit. His state's deposit cap already applies to his existing deposit, so he asks for pet rent instead of a larger deposit. The landlord agrees to $25 a month.

Keep pet records

Keep vaccination records, licences and photos of your pet's area at move-in and move-out.

Check the addendum before you sign

Pet addendums often add charges that do not fit state deposit rules. Upload your lease and addendum to see the pet, deposit and fee clauses explained and flagged against your state.