Catio Size
36 sq ft
Mesh
204 sq ft
Shelves
4
18 sq ft minimum per cat
Recommended Catio Size
6×6 ft
36 sq ft | 7 ft tall
Mesh Needed
204 sq ft
5 rolls
Lumber
118 lin ft
Use Welded Wire Mesh
16-gauge galvanized or vinyl-coated wire keeps cats safe from predators.
Shade & Shelter
Include shaded areas and weather protection for year-round use.
Tanks, habitats, crates, litter & supplies — shop online or pick up in store
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Price as of Jul 24, 2026. Product prices and availability are accurate as of the date indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Inputs
Result
2 cats × 18 sq ft = 36 sq ft needed. Side = ceil(sqrt(36)) = 6 ft. Mesh = (6×4×7) + 36 = 204 sq ft.
Inputs
Result
1 cat needs 18 sq ft. Window box base is 6 sq ft but cat minimum overrides to 18 sq ft. Mesh = (18×4×3) + 18 = 72 sq ft.
Plan a minimum of 18 square feet per cat with at least 6 feet of height. Multiple cats need shelves at different levels to create vertical territory.
| Cats | Min Area | Shelves | Mesh (sq ft) |
|---|---|---|---|
| 1 | 18 sq ft | 2 | ~130 |
| 2 | 36 sq ft | 4 | ~200 |
| 3 | 54 sq ft | 6 | ~260 |
| 4 | 72 sq ft | 8 | ~320 |
Welded wire mesh in 16-gauge galvanized or vinyl-coated steel with openings no larger than 2x2 inches is the safest choice for outdoor cat enclosures.
DIY catios typically cost $200–$1,500 depending on size and materials. Professional installations range from $1,500 to $5,000 or more.
Yes, catios must have a fully enclosed roof to prevent escape, predator entry, and provide weather protection. Cats are excellent climbers and will escape open-top enclosures.
Read our guide
Read our guide
Read our guide
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Last Updated: Jul 24, 2026
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