A vertical route is 3 connected levels, not 1 tall post. Build it as 40 cm of height per level with at least 2 exits from each platform, and a cat that hides under the bed will start using the room in 5-10 days. The numbers matter more than the furniture: 40 cm suits most adult cats, 30-35 cm suits cats over 11 years or over 6 kg, and any gap over 60 cm horizontally will be refused by most cats.
Why 3 levels, not 1 tower
One tall tower gives 1 high spot and a traffic jam. Three levels give a cat 3 choices at different heights, which is how cats settle disputes without a fight: the lower cat yields, the higher cat stays. In a 2-cat home, 3 levels plus 2 exits means a nervous cat can move 120 cm up and 80 cm sideways without passing the other cat. Owners who add a second cat usually need 4-5 usable platforms, not 3.
The 40 cm rule
Measure from the top surface of one platform to the top surface of the next, not from the floor. For an average adult cat of 4-5 kg, 40 cm is a comfortable step-up that uses 1 push and lands without a wobble. Under 30 cm the route reads as shelving and cats stop climbing it; over 50 cm a cat with short legs or a sore hip will use it once and then take the floor route. Kittens under 6 months do fine with 25-30 cm steps, and cats over 11 years do best with 30-35 cm steps plus a ramp.
2 exits per platform
Every platform needs 2 ways on or off, and they should not be the same direction. A landing 40 x 30 cm with 1 exit is a dead end, and a cat that gets cornered there will stop using the whole route. Typical pairs: up and down on opposite ends, or up plus a 50 cm side jump to a shelf or a windowsill. On the top level, keep 1 exit and add a 20 cm wide rest shelf so the cat can sit with its back covered.
Dimensions and fixing
Platforms of 40 x 30 cm hold 1 adult cat; 45 x 35 cm lets it turn around. Fix each platform with 2 screws into a stud or use 4 wall anchors rated 15 kg, because a 5 kg cat landing from 40 cm puts a brief load of roughly 15-20 kg on the bracket. Cover the top with 6-8 mm carpet or a 3 mm cork sheet: bare varnish is the single most common reason a new route gets ignored. A ramp at 40-45 degrees, 25 cm wide and 60-70 cm long, replaces 1 of the 3 jumps for older cats.
Route plan
| Level | Height cm | Platform cm | Step from previous | Exits | Load rating kg |
|---|---|---|---|---|---|
| 1 | 40 | 45 x 35 | 40 cm up | 2 | 20 |
| 2 | 80 | 45 x 35 | 40 cm up | 2 | 20 |
| 3 | 120 | 50 x 35 | 40 cm up | 2 | 20 |
| Side shelf | 95 | 60 x 25 | 35 cm gap | 2 | 15 |
| Window perch | 110 | 55 x 30 | 45 cm gap | 2 | 12 |
The side shelf at 95 cm is what turns 3 stacked platforms into a route: it lets a cat cross from level 2 to level 3 without a 40 cm climb, so the top is reachable in 2 moves instead of 3. The window perch at 110 cm adds a 3rd exit from the top level and gives the route a reason to exist: a view.
Placement
Put the bottom level inside the room the cat already uses, within 1.5 m of a doorway the cat walks through, and keep the whole route off the wall with the litter box and away from a bathroom tap if your cat is fixated on running water — a route that ends next to a dripping tap turns into a 20-minute daily vigil. Leave 35-40 cm of clear headroom above the top platform, and keep the route at least 1 m from a hot radiator or a stove.
Cost and materials list
Three platforms plus a side shelf take 1 sheet of 18 mm plywood, 8 bracket screws, 4 anchors and 3 m of carpet offcut: about 70-110 USD if you build it, or 180-350 USD for a ready-made 3-level unit of similar size. Builder boards pre-cut at 45 x 35 cm cost 8-14 USD each and save 2 hours of sawing. Buy 1 spare bracket: a route that loses a platform for 3 days usually loses the cat's habit with it.
The first 10 days
Do not lift the cat onto level 3. Place 3-4 treats on level 1 each evening for 3 days, then 2 treats on level 2 for the next 3 days, then 1 treat on level 3. Most cats reach the top within 5-10 days. If nothing moves by day 7, the usual causes are a 5 mm wobble, a platform under 30 cm deep, or a route that starts in a corner the cat never visits.
Multi-cat and senior adjustments
With 3 cats, add 1 more level than you think you need: 4 platforms and 8 exits is the working minimum, and each cat needs a sightline that is not shared. For a cat over 11 years, cut the step to 30-35 cm, widen every platform to 45 x 35 cm, add a 25 cm ramp, and put a non-slip 5 mm mat on each landing. A senior cat that stops climbing for 2 weeks needs a vet check for joint pain before the furniture gets rebuilt.
Next steps
- Measure the room and mark 3 heights: 40, 80 and 120 cm.
- Cut 3 platforms, 45 x 35 cm, plus 1 side shelf 60 x 25 cm.
- Fix each with 2 stud screws or 4 anchors rated 15 kg.
- Add 2 exits per platform, 1 of them sideways.
- Lure with treats for 7 days before judging the design.
If your cat will not be handled for nail trims, the 2-person method in the towel wrap routine keeps claws short without a fight on a high platform. Cats that guard the bathroom sink need the tap obsession plan before the route runs past a basin. For body size and jump range by breed, run the breed quiz and adjust the 40 cm step by 5 cm either way.
Terms mentioned in this article
Frequently asked
Is 40 cm the right step for every cat?
Forty cm suits most adults of 4-5 kg as a single comfortable push with a clean landing. Go to 30-35 cm for cats over 11 years or over 6 kg, and 25-30 cm for kittens under 6 months. Above 50 cm a short-legged or sore-hipped cat usually tries the step once and then stays on the floor for good.
Why do platforms need 2 exits?
A 40 x 30 cm landing with 1 exit is a dead end, and a cat cornered there once will avoid the whole route. Two exits in different directions, such as up plus a 50 cm side jump to a shelf, let a nervous cat cross from level 2 to level 3 without climbing, and stop the top level from becoming a trap in a multi-cat home.
How much weight does a bracket need to hold?
Plan for 15-20 kg per platform. A 5 kg cat landing from 40 cm puts a brief load well above its body weight on the bracket, so use 2 screws into a stud or 4 anchors rated 15 kg. Add a 6-8 mm carpet or 3 mm cork surface, since bare varnish is the most common reason a new route gets ignored.