Egress Window Permits in Calgary: Do You Need One?

Most people frame the permit question in a way that leads them astray.

Asking whether an egress window needs a permit is less useful than asking something else: is this a change to the structure of the house, or is it a basement window replacement? Those are separate kinds of project, and true replacements are far less common than homeowners would like.

Structural change or simple swap

Foundation walls bear weight. They support the floor framing on top, the walls built on that framing and all the load those walls carry. They also resist the soil pressing in from outside.

Cutting a new opening in that wall, or enlarging one that exists, takes away concrete that was performing both roles. Something must replace it: a lintel across the top of the opening, resting on solid wall at each side and sized to the actual load overhead. That counts as altering a load-bearing element, which is precisely the sort of work permits are designed to cover.

Swapping in a new basement window of identical size where one already sits, with no cutting, is another matter entirely. The structure is untouched; only the frame and glass change.

So the plain starting point is this: if any concrete is coming out, assume a permit applies and plan accordingly. If a company keen to win the work tells you otherwise, check that claim for yourself before relying on it.

Beware “we’ll just make the existing one bigger”

Those words lead plenty of homeowners over the line without their realising it.

Making an opening bigger still means cutting. A wider opening has a longer span, which changes the load on the lintel. Dropping the sill takes out wall beneath the window, where different forces act. Neither counts as routine upkeep, and the fact that some opening already existed does not turn it into upkeep.

Enlarging is often not the cheaper option either, as we explain in cutting new versus enlarging an existing window, because assuming it is cheaper leads to a lot of poorly planned projects.

Which authority has jurisdiction

Inside city limits, building permits come from the City of Calgary. Elsewhere the authority having jurisdiction is your local municipality: the City of Airdrie for Airdrie, the Town of Okotoks for Okotoks and the Town of Cochrane for Cochrane. Beyond those town boundaries, the county is responsible, whether Foothills, Rocky View or Wheatland. Every one of them is its own authority with its own procedures.

We are intentionally leaving those procedures out. We do not post fees, application steps, review order, portal instructions or scheduling expectations for another organisation’s system, since they change and an out-of-date summary on an installer’s blog does more harm than good. The municipality publishes its own requirements, and those are what apply. Ask us, or ask them directly.

Two points are safe to make: permit requirements come from the authority and your installer cannot waive them, and they apply to the work itself regardless of whether anyone can see it from the road.

What a permit application has to show

Whatever the municipality’s forms look like, an application for this kind of structural alteration usually has to establish two things. First, that a qualified person has worked out what supports the wall once the opening is cut. Second, that the completed opening meets the egress requirements in Alberta’s building code.

The first point is engineering. In Alberta that requires an APEGA-licensed professional engineer, a P.Eng., who produces the drawings and, when needed, the letters of assurance. We supply and install basement windows and doors; we are not a design firm, so we work alongside engineers and build to their specification.

The second point is about dimensions, and those are set. The clear opening needs to be at least 0.35 m² (3.77 sq ft), neither dimension of it can be under 380 mm (15”), and the sill may sit at most 1.5 m above the finished floor. Those are the figures an inspector checks, and they are explained fully in the size requirements article.

How we handle the permit side

Our permits and structural engineering service is there because most homeowners would rather not manage this themselves, and because an installer who cuts now and deals with permits afterward leaves a mess that is costly to fix.

Concretely, we organise the engineering, put together and submit the building permit application, arrange utility locates before any digging, and book the inspections the permit requires. As owner, you are the applicant of record, but we do the legwork of moving the file along.

We will not promise when a municipality will respond. That is outside our control, and an installer who guarantees a date is guessing, or saying what you would like to hear.

The risk of going without one

Structural work done without a permit rarely causes trouble on the day. Problems appear later, usually at an inconvenient time.

Typical examples: a buyer’s inspector spots an opening with no sign of a proper lintel and the deal slows down; a suite inspection uncovers work with no permit record; or an insurer starts asking questions after a basement-related claim. The resale side of this is covered in selling a house with an illegal basement suite.

None of that is guaranteed to happen. All of it can be avoided by handling the permit properly at the outset, which costs noticeably less than handling it twice.

In brief

When concrete is being cut, expect to need a permit and expect to need an engineer. Check the requirements with the authority having jurisdiction, not with an installer’s website, this one included. And if a quote in front of you says nothing about either, raise that before anything else.

Send us your address and we will outline what the permit file likely involves before you commit to anything.