Quick answer: A safe DIY cat highway starts with a stud finder, not a shelf. Mark every stud along the wall, plan the steps so each shelf lands on at least one stud, and fix brackets with wood screws into the framing. Space steps for easy hops, get written landlord approval first and keep filler on hand to patch holes at move-out.
A cat highway is a route of shelves, steps and perches that lets a cat travel round a room without touching the floor. In a small apartment it adds territory without taking up floor space, which is why so many renters want one.
The risk is in the wall. A cat jumping onto a shelf puts sudden force on it, and a shelf held only by drywall anchors can pull out. This guide builds the layout around the studs, so every step has solid framing behind it.
Why Cats Use a DIY Cat Highway
Ohio State University's Indoor Pet Initiative says cats need something that lets them elevate themselves from ground level and may feel safer sleeping somewhere high. Cats Protection adds that cats feel safe resting and watching their surroundings from high places.
In a small space, height is the cheapest way to add territory. A route along one wall can give a cat a lookout, a resting shelf and a path to a window without adding another piece of floor furniture.
Choosing Shelves and Steps
Not every shelf suits a cat. Look for solid wood or thick plywood rather than thin particleboard, which can sag or crack at the screws over time. Each step should be deep enough for the cat to land with all four feet and turn round, and the top perch deep enough to lie stretched out.
Rounded front corners are kinder to people walking past, and a lip or a slightly raised back edge helps a sleepy cat feel secure. Avoid glass shelves and anything glossy, which give claws nothing to grip on landing.
- Solid wood or thick plywood, not thin particleboard.
- Steps deep enough for four feet and a turn.
- Top perch deep enough to lie stretched out.
- Matte or carpeted surfaces, never glass.
Get Landlord Approval Before Drilling
Read your lease and ask in writing before you drill. Explain the plan: number of shelves, screws into studs, and holes filled and painted at move-out. Many landlords are fine with a few small holes if they know they will be repaired.
If drilling is not allowed, a freestanding cat tree or a tall bookcase with cleared shelves can create a similar route. Our small apartment cat home hub collects no-drill options.
Finding and Marking Studs
Wall studs are vertical timber or metal framing members behind the drywall. In many homes they sit at regular spacing, but older buildings and apartments vary, so find every one rather than assuming.
- Calibrate the stud finder on a section of wall with no stud.
- Slide it slowly across the wall at the height of your highest shelf and mark each edge with a pencil.
- Repeat at the height of your lowest shelf to confirm the stud runs straight.
- Check with a thin nail in a spot a shelf will cover, to confirm wood rather than a pipe or cable.
- Draw a light vertical line down the centre of each stud.
Metal studs need different screws from timber ones. If the nail test hits metal, use fixings rated for metal studs and follow the bracket maker's guidance.
Laying Out Steps on the Stud Lines
With studs marked, sketch the route on paper first, then tape it on the wall with painter's tape. Each step should land where its brackets can reach a stud line. Wider shelves can span two studs, which makes them steadier.
| Element | Layout rule |
|---|---|
| First step | Low and close to a chair, sofa or table so the cat can hop up easily |
| Middle steps | Staggered, each one an easy hop from the last, with no long gaps |
| Top perch | Deep enough for the cat to lie down, near a window if possible |
| Exit | A second way down, so the cat is never trapped at the top |
Watch your cat jump before you finalise spacing. An older or heavier cat needs smaller steps than a young climber. Our window perch stud finder layout uses the same method for a single perch.
Fixing Shelves to Studs, Not Just Drywall
Use solid shelves and steel brackets, and fix each bracket with wood screws long enough to pass through the drywall well into the stud. Drywall anchors alone are not a good choice for a surface a cat lands on, because the force of the jump pulls outward on the fixing.
- Pre-drill pilot holes to avoid splitting the stud.
- Use at least two screws per bracket.
- Check each shelf is level and does not move when you press down hard on the front edge.
- Add a non-slip surface, such as a carpet offcut or sisal mat, screwed on from below.
Our stud-safe cat tree build and the wall shelves and window perches hub show more bracket options.
Routes for Multi-Cat Apartments
In a home with more than one cat, a single-lane highway can become a standoff. International Cat Care advises providing high perches throughout the house and spreading resources so each cat has access without crossing the others.
Build in passing places: a wider shelf in the middle of the route, or two exits at different ends. Our cat highway with a window perch in a small apartment includes a two-exit layout.
Working Around Outlets, Pipes and Windows
Before you drill, find out what else is in the wall. Electrical cables often run vertically above and below outlets and switches, and pipes may run behind kitchen and bathroom walls. Keep screws well away from those lines, and use a stud finder with a live-wire detection mode if you have one.
Windows are popular end points, but check the sill and frame before you rely on them. A route that ends on a narrow sill with an open window is a fall risk, especially above ground floor. Keep windows on the route screened or closed when the cat is using the highway. Our window perch guide for small apartments covers safer sill options.
Weekly Checks Once It Is Up
Press down on every shelf once a week for the first month, then monthly. Look for brackets pulling away from the wall, screws backing out or cracks in the paint around a fixing. Tighten or re-fix straight away and keep the cat off that step until it is solid.
Replace worn non-slip surfaces before they get smooth. A cat that slips on a landing may stop using the route altogether.
Patching Holes at Move-Out
When you move, remove the shelves and brackets, fill each screw hole with lightweight filler, let it dry, sand it flush and touch up with matching paint. Keep a note of the paint colour and finish when you move in, or ask the landlord for it.
If the landlord supplied the paint, a small tester pot is usually enough to cover a handful of filled holes neatly, and touching up with a small brush keeps the patch from standing out on a matte wall.
Photograph the wall before you drill and after you patch. It makes the deposit conversation much easier.
Cat Highway Layout Checklist
- Written landlord approval.
- Every stud found, checked and marked.
- Route taped on the wall before drilling.
- Each bracket screwed into a stud.
- Shelves level and solid under hard pressure.
- Non-slip surface on every step.
- Two ways down from the top.
- Filler and paint ready for move-out.
Apartment Cat Highway FAQ
Can I put up a cat highway in a rented apartment?
Often yes, with written landlord approval. Explain the number of shelves, that screws will go into studs and that holes will be filled and painted at move-out. If drilling is not allowed, a freestanding cat tree or a cleared bookcase can create a similar climbing route.
Do cat shelves need to go into studs?
Yes, it is the safest approach. A cat landing on a shelf puts sudden outward force on the fixings, and drywall anchors alone can pull out. Fix each bracket with wood screws into a stud, and use fixings rated for metal studs if your building has them.
How far apart should cat highway steps be?
Close enough that your cat can hop between them easily, with no long gaps. Watch how far your cat jumps comfortably before you drill. Older or heavier cats need smaller, closer steps, and every route should have a second way down from the top.
How do I fix the wall when I move out?
Remove shelves and brackets, fill each screw hole with lightweight filler, sand it flush once dry and touch up with matching paint. Photograph the wall before drilling and after patching, and note the exact paint colour and finish when you first move in.
