Yes — installing an egress window in Ottawa requires a building permit, without exception, because cutting a new or enlarged opening into a concrete foundation wall is structural work regulated by the Ontario Building Code. In 2026, the City of Ottawa permit fee for this kind of alteration typically runs about $200–$500, and the installed cost of a properly executed egress window with a window well and drainage generally lands between $4,000 and $10,000 depending on foundation type and excavation depth. The Building Code requires that a bedroom window used for escape provide a minimum unobstru...
Cutting an opening into a poured concrete or concrete-block foundation wall removes load-bearing material and changes how the wall carries the house above it. That is structural work, and the City of Ottawa requires a building permit for it every time — there is no small-job exemption the way there is for a tiny detached shed. The permit exists to make sure three things happen correctly: that a properly sized lintel or header transfers the load around the new opening, that the finished window me...
Swapping a basement window for a new one of the same size in the same opening is typically a like-for-like replacement that may not require a permit. The moment the opening is enlarged or a new one is cut, the permit requirement kicks in.
The Ontario Building Code sets clear minimums for a bedroom escape window. The opening must provide at least 0.35 square metres (roughly 3.77 sq ft) of unobstructed clear opening area, with no individual dimension less than 380 mm (15 inches). It must be openable from the inside without tools, keys, or special knowledge — so a window that requires removing a security bar or unscrewing a sash does not qualify. If the window opens into a window well, the well must provide at least 760 mm (30 inche...
Every bedroom in an Ottawa home needs an egress window or a door directly to the exterior, unless the room is sprinklered. That includes basement bedrooms in a finished basement and every bedroom in a secondary dwelling unit or in-law suite.
A proper Ottawa egress window install is a multi-trade job that usually runs two to four days. The crew starts with an Ontario One Call locate and then excavates outside the foundation down below the planned sill, which in a typical Ottawa home means digging three to five feet of clay and often working around landscaping, downspouts, or an air conditioner condenser. Inside, they temporarily support any load above the opening, then saw-cut the concrete with a wet concrete saw and remove the block...
In 2026, a complete egress window installation in Ottawa typically costs $4,000–$10,000, with most straightforward jobs landing around $5,500–$7,500. The breakdown generally looks like this: the casement window unit itself runs $800–$2,000; concrete saw-cutting and removal $1,200–$2,500 depending on wall thickness and whether it is poured concrete or block; excavation $800–$2,000; the window well and cover $600–$1,800 depending on whether you choose a basic corrugated well or a tiered composite ...
If the egress window is part of a full basement finish, factor it into the overall project budget early. It is one of the few line items with a hard code requirement, so it cannot be value-engineered out of the scope later.
Ottawa actively permits secondary dwelling units — basement apartments and in-law suites — and egress is one of the requirements that most often stops a homeowner's plan. Every bedroom in the unit needs a compliant egress window or direct exterior door, and the unit as a whole needs a means of egress that meets the Building Code, along with fire separation between units, interconnected smoke alarms, and carbon monoxide detection. If you are converting a basement into a rental unit, the egress wi...
This is not a job for a general handyman. You want a contractor who cuts foundations regularly, carries adequate liability insurance and WSIB coverage, and can show you recent Ottawa jobs. Ask each bidder specific questions: who pulls the permit, what lintel will be used and who sized it, how the opening will be temporarily supported during the cut, how the new opening will be waterproofed and tied into the existing membrane, and whether the window well drain will connect to the weeping tile or ...
Yes. Cutting a new or enlarged opening in a foundation wall is structural work and always requires a City of Ottawa building permit. Expect roughly $200–$500 in permit fees in 2026. Replacing an existing basement window with the same size unit in the same opening generally does not require one.
The Ontario Building Code requires a minimum unobstructed opening of 0.35 m² (about 3.77 sq ft) with no dimension less than 380 mm (15 inches), openable from the inside without tools or special knowledge. If it opens into a window well, the well must give at least 760 mm (30 inches) of clearance in front of the fully open window.
A complete installation typically runs $4,000–$10,000 in 2026, with most straightforward jobs at $5,500–$7,500. That covers the window, concrete cutting, excavation, lintel, window well and cover, waterproofing, drainage tie-in, backfill, and the permit. Tight side-yard access that forces hand-digging can add $1,000–$2,000.
Yes. Every bedroom needs an egress window or a door directly to the exterior unless the room is sprinklered. Without one, the room is not a legal bedroom — it can't be listed as a bedroom in a sale and can't be legally occupied in a rental unit.
Most Ottawa installations take two to four days on site, plus lead time for the permit and the window order. Add the Ontario One Call utility locate, which takes several business days and must be completed before excavation begins.