A prospect emails on a Tuesday afternoon: "I have a 40-pound labrador. What's the pet charge?"

Your leasing agent types back: "$500 pet deposit."

Eleven months later that labrador has destroyed the carpet in the second bedroom. Replacement is $1,400. You keep the $500, itemise the rest, and think you've handled it.

Then the tenant replies with a sentence you weren't ready for: "You told me it was a fee."

So go and find the lease. Does it say deposit? Does the ledger say deposit? Did the agent's email say deposit? In most portfolios those three things don't agree and you're about to lose an argument you should have won over a label nobody thought about.

Here's what's worth knowing before you read further: a pet fee and a pet deposit are not the same money wearing different names. One is generally yours. One generally isn't. And which is which depends on where the building is.

By the end of this you'll know what separates the three, what the market charges, what to put in the lease, and how to book each one so this Tuesday email never becomes that dispute.

Two Categories, Not Three

Strip the labels off.

1. Money you've earned. Yours when it lands. Income.

2. Money you're holding. The tenant's until something specific happens. A liability on your balance sheet.

Pet rent sits firmly in the first. Pet deposits sit firmly in the second. Pet fees are the awkward one, and that's exactly where the trouble is.

The Three, Quickly

1. Pet deposit. Generally held as security for the tenant's obligations, and subject to the jurisdiction's rules on return, deductions and timing.

2. Pet fee. Generally a non-refundable charge for allowing the pet, where permitted by applicable law. It isn't a security deposit merely because it's collected at move-in but several states don't recognise the distinction the way operators assume.

3. Pet rent. A recurring monthly charge added to rent. Nothing to return, no deadline to miss, no itemisation.

What The Market is Asking For

Numbers help, so here are the ones worth knowing.

RentCafe's 2025 analysis of listed prices on pet-friendly apartments puts average monthly pet rent at $35.65. The average refundable pet deposit was slightly over $300, ranging from $289.52 in small cities to $311.20 in large cities. The average non-refundable pet fee was $315.

Those are listed asking prices, not transaction data so treat them as a market signal rather than a benchmark you must hit. What they do show clearly is that all three charges land in roughly the same place. Which is exactly why operators treat them as interchangeable: they cost the tenant about the same, and they are legally nothing alike.

"Just call it a fee" and Then Try it in California

Fees look easier. No trust account, no return deadline, no itemisation, no argument.

Then you cross a state line.

California. The state's own tenant guide is clear that a charge called a pet deposit, key fee or cleaning fee can be treated as part of the security deposit, and that the general cap is one month's rent with a limited small-landlord exception. So writing "non-refundable $500 pet fee" into a California lease is writing a sentence the statute doesn't permit.

There's a second California trap, and it's the more operationally important one. Since AB 12, most security deposits are capped at one month's rent, and a pet deposit counts toward that cap. Hold a full month as security, then add $500 for the dog, and you're over without noticing, because in your system those are two separate fields. California also gives the landlord 21 days after move-out to return the deposit or provide an itemised statement of deductions, with invoices attached where deductions exceed $125.

Colorado. House Bill 23-1068, effective 1 January 2024, limits the additional deposit for a pet to $300 and requires it to be refundable — the Colorado Division of Real Estate notes that section 38-12-106, C.R.S. now states the security deposit must be refundable to the tenant, where previously many landlords required non-refundable pet deposits. Colorado also caps the pet rent itself: no more than $35 per month or 1.5% of monthly rent, whichever is greater.

That last part matters for this article specifically. Colorado didn't just regulate one of the three charges. It regulated two, differently.

Florida. No general statutory dollar cap on security deposits, but separate rules govern how deposits are held and how fees offered in lieu of a security deposit operate.

And it isn't only states. Seattle allows a pet damage deposit of up to 25% of the first month's rent, in addition to the security deposit and permitted move-in fees. City ordinances can be stricter than the state they sit in.

Four jurisdictions, four different answers, and two of them regulate charges the others don't touch. The label doesn't always control. In some states the law looks at the purpose and treatment of the charge; in others it expressly distinguishes fees from security deposits. Which of those you're in is a question about your specific state, not a rule you can carry across a portfolio.

The full picture goes in [Pet Fees and Deposits by State] bookmark that one if you operate in more than one place.

The Dog That Arrived in Month Seven

Here's a number worth sitting with.

PetScreening's 2026 survey of 673 property managers found that only 43% of renters report owning a pet, compared with 71% of US households overall. The gap highlights a potential visibility problem for operators, and the survey identified unauthorized pets as the number one pet-related challenge reported by onsite teams.

So the Tuesday email at the top of this article is the easy version. The hard version is the dog nobody told you about, found in month seven, on a lease with a no-pets clause and no pet charge on it.

Two questions come up, and they have different answers.

1. Can you add a pet charge mid-lease? Only if the lease lets you, or the tenant agrees to an amendment. A signed lease is a signed lease you generally can't invent a new monthly charge inside its term because circumstances changed. What you can do is put a pet addendum in front of them and have it signed, which converts an unauthorized animal into an authorized one with terms attached.

2. Should you just enforce the no-pets clause? Sometimes. But do the arithmetic first. A lease violation notice starts a process that may end in an eviction you didn't want, over an animal that's caused no damage. An addendum and a monthly charge ends with a documented pet and revenue. Most operators are better served by the second, and should have a written rule about which situations get which.

The thing to fix now: if your lease has no pet clause because the building doesn't allow pets, add one anyway. Silence in the lease is what turns a month-seven discovery into an argument. A clause saying "no animals without a signed addendum" gives you a clean position on day one.

The Part That Quietly Costs Money

Back to the ruined carpet, because the label wasn't the only problem.

A pet deposit isn't income. It's money you owe back, sitting on the balance sheet until move-out settles it. Book it to income at move-in and three things go wrong at once: revenue overstated, deposit liability understated, and when the tenant asks for it back, the money has been recognised, distributed, and possibly spent.

A genuinely nonrefundable pet fee is generally accounted for differently from a refundable security deposit, subject to the applicable accounting rules. Pet rent is charged and recognised monthly.

So a portfolio charging all three is running two different treatments through what looks like one field on one lease. Map it wrong once in a template and every lease built from that template inherits it. Not a one-unit problem forty units before anyone notices.

Twenty minutes, today. Pull your last twenty pet charges. Write down three things for each: what the lease calls it, what the ledger booked it as, what the agent told the tenant. Any row where those disagree is a dispute with a move-out date attached.

Worth 30 minutes, or worth nothing.
One building, every dog known by name? The check above is all you need — a spreadsheet does this fine. Where it breaks is four sites in four states, four people keying charges, and nobody noticing the Colorado property is holding $500 against a $300 statutory ceiling. RIOO treats pet deposits, fees and rent as separate charge types inside NetSuite, so the deposit stays a liability and the fee stays revenue without anyone having to remember which is which. Free 30-minute demo if that's your situation. If it isn't, skip it — the twenty-minute check stands on its own.

What The Lease Should Actually Say

This article's whole argument is that the lease, the ledger and the agent's email have to agree. So here's the clause that makes that possible.

Pet Charges. Resident may keep the animal(s) identified in the Pet Addendum. Resident shall pay monthly pet rent of $____ per authorized animal, due with rent, which is rent and is not refundable. Resident shall pay a refundable pet deposit of $____, which is held as security subject to applicable law and returned in accordance with the deposit provisions of this Lease. Resident remains responsible, to the extent permitted by applicable law, for damage caused by the animal beyond ordinary wear and tear, whether or not the amount exceeds the pet deposit. No animal may be kept without a signed Pet Addendum.

Four things that clause is doing deliberately:

1. It names each charge separately with its own amount, so nobody can argue later about which was which.

2. It says pet rent "is rent and is not refundable" in the same sentence as the amount — so the agent's email, the lease and the ledger all say the same word.

3. It ties the deposit to the lease's existing deposit provisions rather than creating a parallel set of rules, which is how return deadlines get missed.

4. It keeps damage liability separate from the deposit, to the extent your jurisdiction allows. The deposit is a floor, not a ceiling. Operators regularly write leases that accidentally imply the opposite.

Adapt the amounts to your jurisdiction Colorado's $300 ceiling and California's cap both bite here.

Per Pet, or Per Household?

Ask this before you set a number, because the two produce very different revenue and very different exposure.

Most operators charge per animal, and most restrict how many animals there are pet limits per household were the most commonly cited restriction in PetScreening's survey, at 78.4%, ahead of breed at 66.7% and weight limits at 59.8%.

But statutory caps aren't always written the same way. Colorado's limit on additional pet rent is expressed as a ceiling on what's charged as a condition of permitting the tenant's pet animals plural. An operator reading that as "$35 per dog" and charging $70 for two has read it the way they wanted to, not the way it's written.

The rule: decide per pet or per household deliberately, write it that way in the addendum, and check whether your state's cap is phrased per animal or per tenancy before you multiply anything.

So Which Should you Charge?

Short answer: pet rent, plus a modest deposit where permitted, and think hard before the fee.

Pet rent can be simpler to administer because it is recurring rent rather than a refundable deposit. It doesn't create a refundable deposit liability, and there's no deposit-return process attached to it. It's also easier to say out loud given a choice between several hundred dollars up front and a monthly amount, the monthly option can be easier for a prospect to evaluate. Pet rent is common in the market, but its legality and amount still depend on local law, and Colorado shows it isn't automatically unregulated.

A deposit earns its place where damage risk is genuinely higher and your jurisdiction lets you hold it without breaching a cap. Accept the admin that comes with it.

The fee is the one to think hardest about. Revenue at move-in is attractive. Being the charge most likely to be restricted, recharacterised or challenged is less so.

Three Things to Remember

1. A deposit is money you're holding. Blur that in the lease or the ledger and you'll lose a dispute you should have won.

2. The name on the charge doesn't reliably control the outcome and how much it controls varies by state. That's a per-jurisdiction question, not a portfolio rule.

3. Pet charges generally cannot be imposed as a condition of keeping a qualifying assistance animal when a reasonable accommodation is required under fair housing law. That's a fair housing question, not a pet policy one, and it gets its own post.

One last thing

Go back to that Tuesday email.

The agent wasn't careless. She answered a prospect in under a minute with a number that sounded right — which is exactly what you'd want her to do. Nobody had ever explained the difference between the three charges to her. And nothing in the system she was typing into would have stopped her getting it wrong.

Eleven months later that costs $500 and an argument. But the argument isn't really about $500. It's that three parts of your organisation described the same money three different ways, and none of them knew the others existed.

That's not a training problem. You can teach every agent the difference and still lose the next one, because the next one will be a new hire in a different state in a building with a different cap. It shows up the same way in deposits, disclosures and accommodation requests same crack, different charge.

If the accounting side is the part that worries you the deposit that got booked as revenue, the liability that doesn't reconcile that's what RIOO's NetSuite property accounting is built for. Have a look, or don't. The twenty-minute check earlier in this article will tell you whether you have a problem either way.

FAQ

1. Can I charge a pet deposit and a pet fee together?
Where both are permitted, yes but check whether the deposit counts toward your state's security deposit cap, and describe each separately in the lease.

2. Is pet rent refundable?
No. It's rent. Though Colorado shows it can still be capped.

3. What if a tenant gets a pet mid-lease?
You generally can't add a charge inside the term unilaterally. Get a pet addendum signed instead.

4. Can I charge a pet deposit for a service dog?
Generally no, where the animal qualifies for a reasonable accommodation. You can pursue actual damage afterwards

Sources: California Department of Real Estate, California Tenants: A Guide to Residential Tenants' and Landlords' Rights and Responsibilities, 2026 edition · California Courts, Guide to security deposits · Colorado Division of Real Estate, 2023 legislative summary (C.R.S. § 38-12-106) · RentCafe pet-friendly housing statistics · PetScreening 2026 State of Pets in Rental Housing Report. This article describes general concepts and is not legal advice. Deposit and fee rules are set by state and local law and change often confirm your position against your own statute before setting policy.