When are pets allowed in a rental apartment?

Check the rental agreement first

Swiss law does not contain one simple rule saying “pets are allowed” or “pets are prohibited”. The first thing to check is the rental agreement and, where incorporated, the house rules. Most Swiss rental contracts make larger pets subject to the landlord's consent.^[1][2]

Before acquiring a pet or moving in, check whether the contract permits pets, prohibits them or expressly requires consent.

Which small pets are allowed without consent?

Unproblematic small pets are generally permitted without consent. Examples include hamsters, guinea pigs, small mice, small rabbits, budgerigars and ornamental fish.^[1]

This does not cover unlimited numbers. Excessive numbers, smells, noise, hygiene problems or unusual strain on the apartment can change the assessment.

Dogs and cats: when is approval required?

For dogs and cats, read the contract carefully. If consent is required, obtain it in writing before acquiring the animal or moving in.

Cats are a borderline case. The Swiss Tenants' Association notes a growing view that indoor-only cats may be treated as unproblematic small pets, but this is not a universal rule for every cat or lease.^[1]

What if the rental agreement says nothing about pets?

If neither the rental agreement nor incorporated rules contain any provision on pets, keeping pets is generally permitted. Both the Swiss Tenants' Association and HEV Switzerland describe this position.^[1][2]

Special limits remain for exotic animals, danger or disturbance potential, excessive numbers and serious nuisance.

Can the landlord simply refuse consent?

If the lease makes dogs, cats or other larger animals subject to consent, current Swiss case law generally allows the landlord to refuse consent without a special substantive reason.^[1]

Another tenant having a dog or cat therefore does not create an automatic right to equal treatment.

What if the pet has already been tolerated for years?

If the landlord has known about an animal for a long period and tolerated it, an implied consent may arise. The Swiss Tenants' Association gives this example for a dog known for years.^[1]

Noise, smells and damage: where are the limits?

Even an approved pet is not a free pass. Article 257f CO requires careful use of the property and consideration for neighbours.^[4]

• persistent barking,
• strong smells,
• soiling common areas,
• aggressive behaviour or danger,
• excessive numbers or breeding,
• damage to floors, doors or walls

can lead to warnings and, in serious or continuing cases, further tenancy consequences.^[1]

Are visitors allowed to bring pets?

A pet that is merely visiting is not automatically equivalent to permanent keeping. A Swiss animal-law specialist interviewed by SRF in 2025 explained that a dog may visit even where a lease prohibits pets and can even stay for several days.^[3]

Cat flaps, cat ladders and aquariums: when is approval required?

Structural changes generally need separate approval. Do not install a cat flap, cat door or exterior cat ladder in a window or façade without consent. Written approval is recommended.^[3]

For large aquariums, also check weight, water-damage risk and structural work.^[1]

What about exotic or permit-requiring animals?

For exotic or dangerous animals, tenancy-law consent may not be enough. Depending on the species, cantonal permits, proof of competence or animal-welfare requirements may also apply. The Federal Food Safety and Veterinary Office provides species-specific guidance.^[5]

How to ask the landlord properly

Search for a pet-friendly rental apartment on UrbanHome

If you already know your dog or cat will move with you, include this issue early in your search. Use the UrbanHome rental search and ask about pet rules before signing.

Checklist before getting a pet

• rental agreement checked
• house rules read
• written consent obtained where required
• species and number stated clearly
• cantonal permit requirements checked
• liability insurance reviewed
• structural changes approved separately
• impact on neighbours considered
• potential damage and cleaning considered

Sources and data date

Rechtsstand und Quellen geprüft am 9. August 2026.

• Swiss Tenants' Association: pets in rental apartments
• HEV Switzerland: pets in rental property
• SRF Espresso: Swiss rules for dogs, cats and other pets
• Fedlex: Article 257f CO – duty of care and consideration
• Federal Food Safety and Veterinary Office: animal keeping

Frequently asked questions

Conclusion

Whether a pet is allowed in a Swiss rental apartment depends mainly on the lease. Unproblematic small pets are generally permitted, while dogs, cats and special animals often require express approval. Even approved pets remain subject to duties of care and consideration.