Calgary Windows & Opening Permits

Window and opening approvals for Calgary homeowners with clarity and confidence.

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Let’s Determine Your WINDOWS OR OPENINGS Permit Requirements

In Calgary, a building permit is required when modifying or creating openings on exterior walls. This includes enlarging windows, adding new windows, or converting windows into doors of a wall to create a new or larger opening.

A permit ensures the window or opening complies with the Alberta Building Code, including requirements related to structural integrity, glassing calculation, energy efficiency, and life-safety standards.

Window and opening design, permit-ready drawings, and approvals

We provide complete support for window and opening modifications in Calgary from initial concept design through building permit approval.

Our Calgary window and opening permit services include:

Experience with City of Calgary approvals

Calgary-specific expertise

We regularly assist Calgary homeowners with window enlargements and opening modifications across many neighbourhoods and housing types.

Design aligned with approvals

Our drawings are prepared with building code compliance in mind.

Clarity over complexity 

We explain what work requires a permit, what drawings are needed, and how the approval process works.

Fewer surprises

Early review helps identify regulatory considerations before construction submission of building permit and construction begins.

Drawings that support approvals — not just construction

Window enlargements and openings must be designed carefully to ensure the structure of the building remains properly supported and that the size of the opening meets the building code. Approval depends on more than the size or location of the opening; it requires alignment with structural requirements and building code provisions.

Our drawings are prepared with these requirements in mind, integrating Alberta Building Code provisions and structural considerations directly into the design process. By addressing these factors early, we reduce revisions, minimize delays, and help applications move through review more efficiently.

HOW THE CALGARY WINDOW & OPENING PERMIT PROCESS WORKS

Step 1 — Property & Project Review

We review your proposed window or opening modification to confirm whether a building permit is required and identify building code considerations.

Step 2 — Permit-Ready Drawings

We prepare a design and drawings aligned with City of Calgary building permit submission requirements for windows and openings.

Step 3 — Permit Management

We submit, coordinate, and manage the Calgary window and opening permit application, responding to City comments and guiding the file through approval.

Client experiences

"I wanted to have a secondary suite and the team at Permit Masters was incredibly helpful with the entire permit process. They were very professional, conducted the site visit promptly, and within a week, they had submitted my application."

“We are very grateful for the services that we received from the Permit Masters professional team. They capture all the details and provide an easy to understand structure and outline to completing the permit process.”

“We moved into a house that had renovations done to it but no building permits. We wanted to get retroactive permits, if possible, in case there was ever an issue with our home insurer such as a fire or an injury related to the renos. In the end, we got all the permits we were looking for and the file is now closed. The whole process was smooth and easy.”

CALGARY WINDOW & OPENING RULES & FAQs

Do I need a permit to enlarge a window in Calgary?

Yes. Enlarging a window typically requires a building permit because it modifies the structural framing of the wall.

Do I need a permit to add a new window to my house?

If a new window requires cutting or modifying the wall framing, a building permit is required.

Do I need engineering for a new window opening?

In some cases, structural design may require engineered details to confirm that the load above the opening is properly supported.

How long does it take to get approval?

Building permit review timelines in Calgary can vary depending on the complexity of the project and the volume of applications being reviewed. In many cases, building permit approvals for window and opening modifications range from approximately 1 to 3 weeks once a complete application has been submitted.

Built on Knowledge, Proven Through Results

To us, being a master means more than knowing the rules. It means years of hands-on experience, refined judgment, and the ability to anticipate challenges before they arise.

We’ve learned how municipalities actually work — not just how bylaws read — and we use that knowledge to guide projects with confidence and clarity.

Our role is to make a complex process feel simple, predictable, and manageable.