Cat Enclosures and Catios: Types and Cat Laws

What is a catio or cat enclosure?

A catio (cat patio) is an enclosed outdoor area for a cat. It is usually wire mesh or netting on a timber or metal frame, with a roof so the cat cannot climb out. RSPCA NSW describes it as a way to give a cat the outdoor experience while giving you peace of mind, and notes it can attach to your cat's indoor space through a window or cat flap.

“Cat enclosure” is the wider term. It covers anything from a small box on a window ledge to a fully netted backyard. RSPCA Australia's containment policy defines containment as keeping a cat within your property boundary, either indoors or in an escape-proof outdoor area made with cat-proof fencing, netting or rigid wire.

LocalPetFinder lists rescue cats; we do not build or sell enclosures. This guide is general information from the RSPCA and from government pages read in November 2026. It is not legal advice.

Why keep a cat contained?

Two reasons come up on every official page: the cat's own safety, and wildlife.

• Safety. RSPCA Australia says roaming cats are at risk of injury and death from road accidents, fighting and disease, and that two in three cat owners have lost a pet to a roaming-related incident, with a third of these involving cars.
• Wildlife. A Threatened Species Recovery Hub fact sheet estimates each roaming pet cat in Australia kills on average 115 native animals a year, and that pet cats together kill around 230 million native animals a year. The NSW Government (July 2026) puts the toll from domestic cats at an estimated 53 million reptiles, 61 million birds and 67 million mammals a year.
• Night-only is not enough for wildlife. The same fact sheet says keeping a cat in at night helps nocturnal mammals and frogs, but native birds and reptiles are active by day. It also cites an Adelaide study in which 39% of 177 cats whose owners thought they were inside overnight were in fact leaving home.

RSPCA Australia's position is nuanced. Its policy supports containment in an environment that meets a cat's needs, says ideally all cats should have safe, escape-proof outdoor access, and also says mandatory 24/7 containment may increase the potential for negative impacts on animal welfare and the community, compared with voluntary containment, by imposing it on people and cats who are not suited or capable of doing it well. That is why a well-set-up enclosure matters as much as the rule.

The RSPCA NSW Keeping Cats Safe at Home project, supported by the NSW Government and its Environmental Trust, reports that its first phase (2021 to 2024), which combined targeted desexing and microchipping with an education campaign promoting voluntary containment, reduced roaming cats by 51% in the Blue Mountains, 35% in Campbelltown and 25% in Tweed Shire council areas.

What types of cat enclosure are there?

Pick by the space you have and how much of it the cat can use. These are generic types; we do not recommend any product or maker.

Catios joined to the house by a window or cat flap, and the fence-top types, are from RSPCA NSW; NRE Tasmania describes netting an existing balcony or pergola. The other rows are general descriptions, not from a named source.

RSPCA NSW also lists supervised time outside on a harness as an option where a catio is not possible, while noting it will not suit every cat and takes careful training.

What makes a good catio?

Size matters less than what is in it. These are the design points RSPCA NSW sets out for a furnished enclosure:

• Shade and rain protection. Covered sections so the cat can get out of the sun and the wet. Australian summers make this the first thing to plan.
• Hiding spots. Secluded shelters the cat can retreat to if it feels threatened.
• Elevated platforms. Shelves and perches give a high lookout, which helps cats feel safe.
• Resting places with cushions or blankets.
• Access to the house, ideally a direct, raised entry such as a window, so the cat can come and go.
• Litter tray and water, kept away from each other and from resting places.
• Scratching surfaces, cat grass, toys and a hammock, plus a seat for you, so the enclosure is a shared, pleasant space.
• A safe spot. RSPCA NSW's containment guide says to place the catio out of sight of dogs and other cats, and not to put bird baths or feeders close to it.

Check the build for escape routes: gaps at ground level, loose netting, and branches or roofs that touch the outside. For a whole-yard system, anything the cat can climb near the fence line is the weak point.

What are the cat containment and curfew rules in each state?

Of the official pages we read, only the ACT's sets a territory-wide containment rule. Elsewhere the state pages either leave cat confinement to councils or do not address it. This is what each official page says.

Official pages read 11 November 2026. Rules differ by council: check yours before you rely on any detail. General information, not legal advice.

Which councils have cat curfews?

Too many to list, and they change every few years as councils renew their animal plans. These examples show the range, each from the council's own page:

Several of these councils phase rules in, so the date a rule is made, the date it starts and the date fines begin can all differ. If you are moving, look up the new council before the cat arrives.

Do you need council approval to build a catio?

Sometimes. Containment rules govern the cat; planning and building rules govern the structure, and they treat a catio like any small shed or pergola. So the answer depends on size, height, how close it is to the boundary and whether it is fixed to the house, and it differs by state and council.

Two official examples show how this works. In NSW, small low-impact works that meet the state's standards can be exempt development needing no planning approval, but exempt development cannot take place on land on the State Heritage Register, and separate council or other approvals may still be needed. In WA, the City of Nedlands exempts animal enclosures from development approval only if they are on a residential zoned lot, set back at least 2 metres from lot boundaries, meet the deemed-to-comply outbuilding rules, are for small animals or a dog only, and are not commercial.

Before you build anything large, roofed or attached to the house, ask your council. In a unit, ask the owners corporation or body corporate as well, because balconies and outside walls are often common property.

Should you build it yourself or use a builder?

A small window box or a netted balcony is within reach for a handy owner. A walk-in catio fixed to the house, or a whole-yard fence system, is more work and more likely to need approval. Whoever builds it, the same checks apply:

• Is it fully escape-proof, roof included?
• Does it have shade, shelter and somewhere to hide (see the design list above)?
• Does it need council, strata or landlord approval?
• For shared fences, have you talked to the neighbour first?
• Can you clean it, and reach the litter tray and water easily?

Prices vary too much by size and material to give a figure, and we do not quote products. Get written quotes for anything built to order.

Can an indoor-only cat be happy?

Yes, with the right setup. The RSPCA's enrichment guide says cats can live happily indoors as long as they are entertained, and that boredom and lack of activity can lead to obesity, anxiety, aggression and urinary tract problems. What it recommends:

• Separate places to eat, drink, toilet, scratch, play and rest, with more of each for more cats.
• Resting places at different heights, plus enclosed spots to hide and sleep.
• A window perch for something to watch, and cat-friendly plants for smell.
• Food puzzles, short play sessions with wand toys that end with a treat, and toys swapped every few days.
• Time with you, at the level your cat is comfortable with.

RSPCA Australia adds that a safe outdoor enclosure, where you have one, gives a contained cat more choice and stimulation. If you are moving an outdoor cat to life at home, its policy says to take steps to ease the change, including seeking vet or behaviour advice where necessary.

Can you have a catio if you rent?

Usually, if your landlord agrees in writing. Freestanding runs and netting that clips or tucks in without drilling are easier to agree to than a structure fixed to the building. Tenancy rules on pets differ by state; our guide to renting with pets in Australia covers each one. For apartment living, an adult cat that is already used to indoor life is often the easiest fit.

Adopting a cat for an indoor or contained home

If you can only offer an indoor home, or an indoor home plus a catio, choose a cat that suits it. Adult cats in foster care come with a known history, so a rescue can usually tell you whether a cat has lived indoors and how it copes. Ask whether the rescue has any conditions about indoor living or containment, and tell them what you can offer.

Our adopting a cat guide covers the steps, fees and state laws, cost of owning a cat covers the budget, and the what cat breed am I quiz helps narrow down the type of cat that suits you.

Thinking about two? A pair entertains each other indoors. See bonded pairs in Sydney or Melbourne, or browse senior cats and ask the rescue how each one has lived.

Other guides for new pet owners

• Flying with a pet in Australia: Qantas and Virgin rules, and Tasmania and WA entry rules.
• A rescue dog's first weeks: settling a new dog in.
• Dogs in hot weather, grass seeds and dogs, barking dogs and the law and bark collars in Australia.
• Paralysis ticks in dogs and cats: one more reason a contained cat is a safer cat on the east coast.