How much does whole-home renovation cost in Markham?

With Zigma Group, whole-home renovation starts from $105 per sq ft. Prices are in Canadian dollars before HST, as of October 2026, and are confirmed after a site visit. The main factors are how much of the house is taken back to the studs; replacing wiring, plumbing and heating; and structural changes and finish level.

Is it better to renovate the whole house at once or room by room?

Doing it as one project lets the wiring, plumbing, insulation and structure be fixed while the walls are open, and avoids redoing finished rooms later. Room-by-room work can suit a smaller budget, but each phase repeats the setup and disruption.

Do I need a permit for a whole-home renovation in Ontario?

Almost always. Structural changes, new or moved plumbing, heating changes and additions need a building permit, and electrical work must be filed with the Electrical Safety Authority. Requirements vary by municipality, so we confirm them for your address.

Do you do whole-home renovation 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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Whole-Home Renovation

Whole house · Markham

Whole-Home Renovation in Markham

A whole-home renovation rebuilds the house you already own: new layout, new systems and new finishes, planned as one project instead of a string of separate jobs. 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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Renovated living room with oak floors, new trim and a large garden window — From our Cobblestone Drive renovation

Scope

What is included.

Assessment of structure, wiring, plumbing and heating
New floor plan and interior design
Building permit drawings and applications
Strip-out, framing and structural changes
New electrical, plumbing, insulation and drywall
Kitchens, bathrooms, floors, stairs and trim

Cost

What it costs.

From $105per sq ft

What moves the price

How much of the house is taken back to the studs
Replacing wiring, plumbing and heating
Structural changes and finish level

Prices are in Canadian dollars before HST, as of October 2026. Every project is confirmed with a written quote after a site visit.

Local knowledge

Whole-Home Renovation in Markham.

Homes like these
Subdivision homes of this period are generally sound, so the work is mostly about layout, kitchens, bathrooms and finishes, not structural repair.
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
Moving walls, changing structure or altering plumbing and heating usually needs a building permit in Ontario. We prepare the drawings and handle the application with your municipality.
Living arrangements
A full renovation touches every room, so most families move out for the main construction period. We set the sequence with you before work starts.
What we find inside
Older GTA homes often hide outdated wiring, old plumbing or past repairs. We check what we can before demolition and tell you as soon as something changes the plan.

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

Whole-Home Renovation in Markham: the short answers.

How much does whole-home renovation cost in Markham?: With Zigma Group, whole-home renovation starts from $105 per sq ft. Prices are in Canadian dollars before HST, as of October 2026, and are confirmed after a site visit. The main factors are how much of the house is taken back to the studs; replacing wiring, plumbing and heating; and structural changes and finish level.
Is it better to renovate the whole house at once or room by room?: Doing it as one project lets the wiring, plumbing, insulation and structure be fixed while the walls are open, and avoids redoing finished rooms later. Room-by-room work can suit a smaller budget, but each phase repeats the setup and disruption.
Do I need a permit for a whole-home renovation in Ontario?: Almost always. Structural changes, new or moved plumbing, heating changes and additions need a building permit, and electrical work must be filed with the Electrical Safety Authority. Requirements vary by municipality, so we confirm them for your address.
Do you do whole-home renovation 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.