Do I need a permit to replace windows in Ontario?

Not usually for same-size replacements. You usually need one to enlarge an opening or create a new one. We confirm with your municipality.

Can a window be turned into a patio door?

Yes. The wall below the window is removed and, if the opening gets wider, a new lintel is installed. It is a common change at the back of the house.

Do you do window and door replacement projects in Markham?

Yes. We work throughout Markham, including Unionville, Thornhill, Cornell, Markham Village, Milliken and Angus Glen. Call +1 (647) 718-3913 to arrange a visit.

Who issues the permit for this work in Markham?

Where a permit is needed, it is issued by the City of Markham's building department. We prepare the drawings and handle the application and inspections.

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Window and Door Replacement

Exterior · Markham

Window and Door Replacement in Markham

New windows and doors change both how a house looks and how warm it stays. We replace existing units and, where the design calls for it, cut larger openings for more light. In Markham, the city mixes 1970s and 1980s subdivisions with newer communities such as Cornell and historic cores in Unionville and Markham Village.

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Double-height living room with full-height windows on two sides — From our Damavand project

Scope

What is included.

Replacement windows and patio doors
Enlarging openings and adding new ones
Front entry doors and sidelights
Structural lintels over wider openings
Air sealing, flashing and insulation around frames
Interior trim and exterior finishing

Cost

What it costs.

By quote

The cost of window and door replacement depends on the size and condition of the house and the finishes chosen, so we price it after a site visit. Call +1 (647) 718-3913 for a quote.

Local knowledge

Window and Door Replacement in Markham.

Homes like these
Brick-fronted subdivision homes mainly need new windows, doors and entrances to look current.
Housing
In Markham, the city mixes 1970s and 1980s subdivisions with newer communities such as Cornell and historic cores in Unionville and Markham Village.
Permits
Building permits in Markham are issued by the City of Markham's building department. We prepare the drawings, submit the application and book the inspections.
Areas we cover
We work throughout Markham, including Unionville, Thornhill, Cornell, Markham Village, Milliken and Angus Glen.
Heritage districts
Unionville, Markham Village and old Thornhill are heritage conservation districts. Exterior work there needs heritage approval in addition to a building permit.
Updating 1980s homes
Many Markham homes are reaching the age where kitchens, bathrooms, windows and mechanical systems all come due together.

Before you start

What to know.

Permits
Replacing a window or door with one of the same size usually needs no building permit. Making an opening larger or adding a new one is a structural change and usually does.
Installation matters
Most drafts and leaks come from how a window is installed, not from the unit. Flashing, air sealing and insulation around the frame are what we pay attention to.
Windows near the lot line
Building Code limits the amount of glass on walls close to a neighbouring property, which can restrict new side windows.

How we work

One team for every stage.

AssessWe survey the house as it stands.
Design and permitsDrawings and approvals before work starts.
Strip-outWhat is worn out comes off.
RebuildStructure, wiring, plumbing and walls.
FinishesCabinetry, tile, floors and paint.
HandoverWalkthrough and documents.

Questions

Window and Door Replacement in Markham: the short answers.

How much does window and door replacement cost in Markham?: The cost of window and door replacement depends on the size and condition of the house and the finishes chosen, so we price it after a site visit. Call +1 (647) 718-3913 for a quote.
Do I need a permit to replace windows in Ontario?: Not usually for same-size replacements. You usually need one to enlarge an opening or create a new one. We confirm with your municipality.
Can a window be turned into a patio door?: Yes. The wall below the window is removed and, if the opening gets wider, a new lintel is installed. It is a common change at the back of the house.
Do you do window and door replacement projects in Markham?: Yes. We work throughout Markham, including Unionville, Thornhill, Cornell, Markham Village, Milliken and Angus Glen. Call +1 (647) 718-3913 to arrange a visit.
Who issues the permit for this work in Markham?: Where a permit is needed, it is issued by the City of Markham's building department. We prepare the drawings and handle the application and inspections.