Quick answer: A roommate agreement for a cat home is a short written list everyone signs up to: keep windows screened or closed, shut the front door behind you, keep medicines and cleaning products in closed cupboards, choose cat-safe plants, agree where the cat's furniture and litter box live, and post the poison-control number.

Most cat accidents in shared homes are not caused by the cat's owner. They happen when a flatmate opens a window on a warm night, leaves painkillers on a bedside table, or brings home a bouquet without thinking about the cat.
A short agreement, written once and stuck on the fridge, removes the guesswork. This checklist covers the points worth agreeing on before a cat moves in, or as soon as a new roommate does. It works for a shared house or a studio cat setup where two people and a cat share one room.
Why a Written Agreement Helps
Spoken rules fade quickly. A written list makes expectations clear to everyone, including guests and partners who stay over, and it gives the cat's owner a polite way to raise problems without making it personal.
Keep it to one page. Long documents get ignored. Each item should be a specific action anyone can follow, not a general request to be careful.
Doors, Windows and Balconies
The ASPCA warns that unscreened windows can pose serious dangers to cats and recommends snug, sturdy screens in every window. In a shared flat, the person who opens a window is often not the one who owns the cat.
- Windows open only if a secure screen is fitted, or only a few centimetres with a stop.
- Balcony doors stay closed unless the balcony is fully netted.
- Front door closed behind you every time, with a quick check that the cat is not at your feet.
- Bedroom doors: agree whether the cat is allowed in each room, and keep those doors open or closed consistently.
Our guide to taking an indoor cat outside safely covers harnesses and supervised time for flatmates who want to help.
Plants and Flowers
Shared homes collect plants from different people. The ASPCA keeps a searchable list of toxic and non-toxic plants, and it lists spider plant and Boston fern as non-toxic to cats. Agree that any new plant gets checked against the list before it comes in.
Cut flowers are the most common slip, especially lilies at birthdays and holidays. Our guide to holiday plants toxic to cats lists the ones to avoid, and our cat-safe plants hub helps with choosing replacements.

Medicines, Cleaners and Food
| Item | Where it lives | Who checks |
|---|---|---|
| Human medicines and vitamins | Closed cupboard or drawer | Each person for their own |
| Cleaning products | Closed cupboard, not under an open sink | Whoever cleans that week |
| Toxic foods (onion, garlic, chocolate, grapes) | Cupboards and sealed containers | Everyone after cooking |
| Hair ties, string, rubber bands | Drawers or pots with lids | Each person |
| Bins | Lidded bin in the kitchen | Everyone |
Write the ASPCA Animal Poison Control Center number, (888) 426-4435 on the agreement. It runs 24 hours a day, every day, and a consultation fee may apply. Add your own vet's number and the nearest emergency clinic next to it.
Where the Cat's Things Go in a Studio Cat Setup
In a studio or small shared flat, the cat's furniture competes with everyone's space. Agree on the spot for the litter box, food and water, a scratching post and a climbing piece, and keep them there so the cat has a predictable routine.
- Litter box in a quiet spot away from the kitchen and food bowls.
- Food and water away from the litter box.
- A scratcher next to the sofa people share, so claws go on the post rather than the cushions.
- A climbing piece near a window, so the cat is not tempted onto shelves and desks.
Our small-apartment cat home hub and the apartment cat tree with a small floor footprint show layouts that fit a single room.
Splitting Cat Duties Between Flatmates
| Task | Owner | Backup |
|---|---|---|
| Feeding | Cat owner | Named roommate when owner is away |
| Scooping the litter box | Cat owner | Named roommate when owner is away |
| Window and door checks | Everyone | Last person to leave |
| Plant checks | Person buying the plant | Cat owner reviews |
| Vet visits and costs | Cat owner | None |
Be clear that the cat is the owner's responsibility. Flatmates agree to safety habits, not to unpaid pet care. If a flatmate does cover for a holiday, write down the feeding amounts and the vet's details.
Noise, Night-Time and Routines
Cats are often active at dawn and dusk, and a roommate on a different schedule can find that hard. Agree on where the cat sleeps, whether bedroom doors stay closed at night, and what happens if the cat scratches at a door at 5 a.m.
A short play session in the evening and a meal before bed help many cats settle. Our 10-minute apartment play routine is an easy habit the cat's owner can take on, so flatmates get quieter nights.
Put noisy cat toys away overnight, and keep the scratching post away from shared bedroom walls if the thud of claws on it wakes people up.
Handling Disagreements Fairly
Even with a written list, small problems come up: a window left open, a litter box that has not been scooped, a plant brought home without checking. Agree in advance to raise these calmly and in private, focusing on the action rather than the person.
If the same issue repeats, update the agreement so the rule is clearer, rather than arguing about what was meant. The aim is a safe cat and a household that still gets along.
Guests, Parties and Contractors
Visitors are the biggest gap in any agreement. Before a party, the cat can go into a closed room with water, a litter box and a bed. Put a note on the door so guests do not let it out.
Contractors and landlord visits often involve open doors for long periods. Agree that whoever books the visit tells the cat's owner in advance, so the cat can be shut safely in a bedroom.
Allergies and Boundaries
If a roommate has mild allergies, agree on cat-free rooms, regular vacuuming, washable covers on shared furniture, and a cat bed that is not on the shared sofa. Our cat bed guide includes washable options.
Boundaries work both ways. If the cat is not allowed in someone's room, the owner should provide enough climbing, scratching and play elsewhere that the cat is not constantly trying to get in.
When Someone Moves Out or In
Review the agreement whenever the household changes. A new roommate needs a quick walk-through: which windows are screened, where the cat's food lives, and which doors stay closed. Ask them to read and add their name to the list.
Moving days are high-risk, with doors propped open for hours. Shut the cat in a bedroom with water and a litter box, and put a sign on the door.
A Sample One-Page Agreement
- Windows open only with screens or stops; balcony door closed unless netted.
- Front door closed behind you; check where the cat is first.
- Medicines, cleaners, string and hair ties kept in closed storage.
- New plants and flowers checked against the ASPCA list first; no lilies.
- The cat's litter box, bowls, scratcher and climbing piece stay in their agreed spots.
- Guests and contractors: cat shut in a bedroom with a sign on the door.
- Emergency numbers: vet, emergency clinic and ASPCA Animal Poison Control.
Pin it where everyone sees it, and update it whenever someone moves in. Our cat-safe plant guide is a good link to share with the group.
Shared Home Cat Safety Questions
What belongs in a flatmate agreement for a cat home?
Keep it short and specific: screened or closed windows, the front door shut behind you, medicines and cleaners in closed storage, plants checked against the ASPCA list, agreed spots for the litter box and cat furniture, a plan for guests, and emergency numbers including the vet and poison control.
Are flatmates responsible for caring for my cat?
No. The agreement covers safety habits that everyone follows, such as closing windows and doors. Feeding, litter, vet visits and costs stay with the cat's owner. If a roommate agrees to cover while you are away, write down feeding amounts and your vet's contact details.
Which houseplants are safe in a shared flat with a cat?
The ASPCA lists spider plant and Boston fern as non-toxic to cats. Check any new plant on the ASPCA's toxic and non-toxic plant list before it comes home, and agree that lilies are never brought in, including as cut flowers for birthdays or holidays.
What number should be on the agreement for poisoning?
Add your vet, the nearest emergency clinic and the ASPCA Animal Poison Control Center on (888) 426-4435. The ASPCA line runs 24 hours a day, every day of the year, and a consultation fee may apply, so keep a payment card handy when calling.