Can I install an egress window on the side of my Calgary home that faces the neighbour's fence?

Yes, you can install an egress window facing your neighbor's fence, but you must meet specific setback requirements and ensure the window well provides adequate escape space.

The Alberta Building Code requires egress windows to have an unobstructed opening of at least 3.77 square feet with a minimum width of 15 inches and maximum sill height of 39 inches from the basement floor. However, the window well itself is where fence proximity becomes critical. The well must provide enough space for a person to climb out and for emergency responders to access the window from outside.

Window Well Requirements and Fence Setbacks

Your window well needs a minimum width of 36 inches and must project at least 24 inches from the foundation wall. If your neighbor's fence is within 3-4 feet of your foundation, you'll likely have sufficient space for a compliant window well. The well must also have permanent steps or a ladder if the sill height exceeds 24 inches from the well floor. Calgary's building permit application will require a site plan showing the proposed window location relative to property lines and existing structures.

The City of Calgary's Land Use Bylaw doesn't specifically restrict egress windows near property lines, but your window well cannot encroach onto your neighbor's property. Most residential lots in Calgary have 5-foot side yard setbacks, providing adequate space for window wells. However, some older inner-city neighborhoods (Kensington, Hillhurst, Inglewood) have homes built closer to property lines where space may be tighter.

Calgary-Specific Considerations

Calgary's extreme freeze-thaw cycles from chinook winds make proper window well drainage absolutely critical. A window well against a fence may have restricted drainage patterns, so ensure your contractor installs adequate weeping tile connection and considers how snow accumulation and spring melt will drain away from the well. Bentonite clay soils common in Calgary's NW and NE quadrants can create drainage challenges that are amplified in confined spaces between your foundation and a neighbor's fence.

Practical Installation Tips

The excavation for your egress window will likely require a mini-excavator, which needs access to the work area. Ensure your contractor can access the side yard with equipment - many Calgary homes have narrow side yards that require hand-digging, increasing costs by $1,500-$3,000. The window well should be lined with concrete or masonry blocks and include a drain connected to your foundation's weeping tile system. Expect costs of $2,500-$6,000 per egress window including foundation cutting, window installation, well construction, and proper drainage.

When to Hire a Pro

Cutting an opening in your foundation wall requires structural assessment and precise execution. The contractor must avoid hitting existing rebar, ensure proper lintel support above the opening, and waterproof all penetrations. This work requires a building permit and inspection by a Safety Codes Officer. While the window well excavation might seem straightforward, improper drainage design will cause water infiltration that can flood your finished basement during Calgary's intense spring snowmelt periods.