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$40/mo pet rent nets $760 over a 2-year tenancy; a $500 refundable deposit alone nets −$75. And banning pets adds a week of vacancy — half of renters have them.
Pet policies are usually set by fear; set one by arithmetic. Expected damage at the defaults is $200 over a tenancy (25% chance of $800) — but a $40/month pet rent collects $960 over the same period, netting $760. A refundable $500 deposit alone nets minus $75 because it only pays when damage actually happens, and caps at the deposit. The vacancy edge finishes the case: over half of renters own pets, so a no-pets policy narrows the applicant pool and adds roughly a week of vacancy per turnover — $416 at $1,800 rent. This calculator prices your policy, including the legal limits (deposit caps, and the Fair Housing rule that service and support animals are not pets at all).
Landlords use it before writing the pet addendum: $40/mo pet rent nets $760 over a tenancy while a refundable deposit alone nets −$75 — and banning pets costs a week of vacancy since half of renters have them.
The math favors monthly pet rent as the base, with a refundable deposit on top if your state allows it. Pet rent prices expected damage continuously — $25–75/month collects whether or not this particular pet destroys anything, which is exactly how insurance works. Deposits only pay in the tail: they must be refundable in most states, which means they return to the 75% of tenants whose pets do no damage, and they cap recovery at the deposit amount when a pet does $1,500 of flooring damage. Non-refundable pet FEES ($200–500 once) sit in legal gray zones — some states treat them as disguised security deposits subject to deposit caps and return rules; check your statute before using one. The combination that usually clears legal review: modest pet rent + refundable deposit, both spelled out in a pet addendum with the animal named. Whatever you charge: it never applies to service animals or ESAs — those are not pets under Fair Housing law, and charging pet rent on one is a discrimination claim.
Screening beats pricing — the 25% default is an average across all pets, and screening selects the good half. The process that works: require vet records (current vaccinations signal an owner who maintains things), a prior-landlord reference asked specifically about the animal (not just the tenant), and a meet-the-pet clause for dogs — a dog that is calm in a strange room with you is the single best predictor available. Write behavioral terms into the addendum: crating when alone for puppies, litter-box maintenance, immediate flea treatment, and liability for damage regardless of deposit. Breed and size restrictions are common but crude — a screened 70-lb lab from a responsible owner outperforms an unscreened 15-lb terrier; some insurers mandate breed lists for liability coverage, so check your policy before dropping restrictions entirely. Weight the applicant-pool math from this calculator: every week of extra vacancy costs 23% of a month's rent, so a pet policy that is too strict to fill the unit quickly is expensive in a way no deposit covers.
The distribution is bimodal: most incidents are $200–600 (carpet spot treatment, door scratching, blind replacement, odor treatment), and the tail is $1,500–4,000 (pet urine into subfloor requiring carpet AND pad AND seal-and-replace, chewed cabinets, scratched hardwood refinishing). Urine is the expensive one because it penetrates — surface cleaning does not remove it, and the next tenant's nose finds it at the showing. This is why expected-value pricing (pet rent) beats tail-insurance pricing (deposit): the $800 average hides the fact that you either collect nothing or eat a floor. The recovery hierarchy when damage occurs: deposit first with itemized receipts and before/after photos, then small-claims for the excess if the tenancy ended badly — though collections from departed tenants are theoretical money. Prevention pricing: a $200 annual pet inspection walkthrough catches litter-box and scratching problems at $200-stage instead of $2,000-stage, and tenants who know you look behave differently. Set the damage inputs to your market — hardwood-heavy units carry worse tails than LVP units, which is itself an argument for the make-ready calculator's durable-grade spec.