In Ottawa, a catio costs roughly $500 to $1,500 for a small window-mounted or balcony box, $1,800 to $4,500 for a mid-sized freestanding enclosure of about 4 by 8 feet, and $3,500 to $12,000 for a custom walk-in catio attached to the house with a cat door. Built by a contractor, most enclosures work out to about $120 to $250 per square foot of footprint — higher than a deck, because a catio needs a full cage: framed walls, a roof, escape-proof mesh, and a secure door. DIY kits sold online run $300 to $1,800 depending on size but rarely account for Ottawa's snow load or a rigid winter-safe floo...
The simplest option is a window catio — a small mesh box that bolts to the exterior around an existing window so the cat can step out from inside. Prefab versions cost $300 to $800, and a carpenter-built custom box runs $500 to $1,500 installed. A balcony or patio-door enclosure that screens in an existing space costs $1,200 to $3,500 depending on how much framing is needed. Freestanding ground-level catios in the 30 to 50 square-foot range typically land at $1,800 to $4,500 built on site with c...
Materials alone for a 4-by-8-foot cedar catio cost roughly $700 to $1,400 in Ottawa in 2026. Hiring a carpenter adds $800 to $2,500 in labour but usually buys you proper footings, a snow-rated roof, and mesh that a determined cat cannot push out.
Framing is the first choice. Pressure-treated lumber is cheapest at about $6 to $10 per linear foot for 2x4 stock but should not be the surface your cat chews or rubs on; cedar costs roughly 40 to 70 percent more and is the preferred pick for enclosures because it resists rot without heavy chemical treatment. For the cage itself, avoid chicken wire — it rusts and cats push through it. Galvanized or PVC-coated welded wire mesh in 16-gauge, 1-inch by 1-inch, costs about $2.50 to $5 per square foot...
The feature that turns a catio from a cage into a genuinely used space is direct access from inside the house. Cutting an insulated cat door through an exterior wall costs $400 to $1,200 in Ottawa depending on whether it goes through wood framing or a concrete foundation, and it should include flashing and an insulated flap rated for cold weather. A door through a basement wall costs more — expect $800 to $1,800 with concrete coring. Installing a cat flap in an existing patio-door insert panel i...
Year-round use means adding a wind-break wall or clear vinyl panels ($300 to $900), an insulated shelter box, and a heated pet pad. Most Ottawa owners treat the catio as a three-season space and close it off from December through March instead.
In most cases, no. The City of Ottawa generally does not require a building permit for a small, freestanding accessory structure under roughly 10 square metres (about 108 square feet) that is not attached to the house and has no plumbing or electrical service. That covers the large majority of catios. You will likely need a permit if the catio is structurally attached to the house, exceeds that size threshold, or is built on a raised deck platform above the code height. Zoning setbacks still app...
There is no dedicated 'catio contractor' trade in Ottawa — the work is almost always done by carpenters, deck builders, or fence installers who take on custom outdoor structures. That is fine, provided you spell out the pet-specific requirements in writing, because a deck builder's default assumptions will not include escape-proof mesh. Your quote should name the framing species, the exact mesh gauge and opening size, how the mesh is fastened (staples fail; screwed battens or panel frames do not...
In 2026, a small window catio costs about $500 to $1,500, a mid-sized freestanding enclosure around $1,800 to $4,500, and a custom walk-in catio with a cat door and finished roof $3,500 to $12,000. Contractor-built enclosures average roughly $120 to $250 per square foot of footprint.
Yes. Materials for a 4-by-8-foot cedar catio run about $700 to $1,400 in Ottawa, versus $1,800 to $4,500 to have one built. The trade-off is that DIY builds often skip frost-stable footings and snow-rated roofs, which matter here.
Usually not. Freestanding accessory structures under about 10 square metres with no plumbing or electrical generally do not need a building permit in Ottawa. A permit is more likely if the catio is attached to the house, larger than that, or built on a raised platform. Zoning setbacks from lot lines still apply, so confirm with the City first.
Use 16-gauge galvanized or PVC-coated welded wire with 1-inch by 1-inch openings, at about $2.50 to $5 per square foot. Avoid chicken wire and plain pet screen — neither is raccoon-proof, and raccoons are common across Ottawa neighbourhoods.
Cutting an insulated cat door through a framed exterior wall costs $400 to $1,200 in Ottawa. Going through a concrete foundation wall costs $800 to $1,800 because of core drilling. Adding a flap to an existing patio-door insert panel is much cheaper at $200 to $500.