What is the cost per square foot to renovate a home in Toronto?

Most full renovations in the GTA run about $150 to $400 per square foot in 2026. Cosmetic updates start around $60 to $150, mid-range renovations run $200 to $350, and high-end or full-gut projects reach $350 to $550+. Older homes needing underpinning often exceed $500 per square foot. Costs vary with scope, site conditions, and finishes.

How much does it cost to gut a 2,000 sq ft house in the GTA?

A full renovation of a roughly 2,000 sq ft home in the GTA commonly lands between about $300,000 and $800,000+, depending on how much is gutted, the finish level, and whether structural work like underpinning is involved. HST is additional.

Do design, engineering, and permits add much to the budget?

Yes. Design, engineering, and permit costs typically add roughly 10 to 15 percent to a whole-home renovation budget. These "soft costs" are essential for a code-compliant, permit-ready project and should be planned for from the start.

Is HST included in renovation quotes?

Usually not. Most renovation estimates are quoted before HST, and the 13 percent tax is added separately. Always confirm whether a quote is inclusive or exclusive of HST so your total budget is accurate.

Whole-Home Renovation Cost Per Square Foot in the GTA (2026)

Whether you're taking a tired house back to the studs or updating room by room, "cost per square foot" is the number everyone wants first. It's a useful benchmark — but only if you understand the enormous range behind it. A cosmetic refresh and a full gut on the same house can differ by a factor of five or more. Here's a realistic 2026 guide to whole-home renovation costs across Toronto and the GTA.

Every figure below is a planning range, not a quote. Whole-home costs vary dramatically with scope, site conditions, and finish level.

What does a home renovation cost per square foot in the GTA?

Think of it as a spectrum tied to how deep you go:

Cosmetic — $60 to $150 per square foot. Paint, flooring, fixtures, and finishes with no structural or mechanical changes.
Mid-range — $200 to $350 per square foot. New kitchen and baths, some layout changes, updated electrical and plumbing, and refreshed finishes throughout.
High-end / full gut — $350 to $550+ per square foot. Down to the studs, new systems, structural changes, and premium finishes.
Older homes needing underpinning — $500+ per square foot. Foundation work, basement lowering, and structural reinforcement add significant cost.

Most full renovations settle in the $150 to $400 per square foot band. Where you land depends far more on scope and structure than on the size of the house.

What does a full renovation cost in total?

Applying those ranges to a common GTA home size: a 2,000 sq ft house typically runs about $300,000 to $800,000+ for a full renovation. The low end reflects a lighter mid-range scope; the high end reflects a full gut with structural work and premium finishes. Add HST on top of all of it.

What drives the price up on older GTA homes?

Character homes in Toronto, Mississauga, and the older inner suburbs carry hidden costs that newer houses don't:

Underpinning or bench footing to lower a basement or reinforce a foundation.
Knob-and-tube wiring and outdated plumbing that must be fully replaced.
Asbestos or lead abatement in homes from certain eras.
Structural surprises — undersized joists, settled foundations, or previous unpermitted work — that only appear once walls open up.

Budget a contingency of 10 to 20 percent for older homes. What's behind the plaster is the biggest wildcard in any gut renovation.

What are the "soft costs" I need to budget for?

Beyond construction, a whole-home renovation carries costs that are easy to overlook:

Design, engineering, and permits — roughly 10 to 15% of the budget. Essential for a code-compliant, permit-ready project.
HST — 13%, almost always quoted separately.
Temporary housing if you can't live in the home during the work.
Permit and inspection fees charged by your municipality.

Our design-build services fold design, engineering, and permit coordination into one accountable process, so these soft costs are planned and visible from the outset rather than appearing as surprises.

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

Almost certainly. Any structural change, plumbing or electrical relocation, wall removal, or basement work triggers a permit under the Ontario Building Code (OBC). Purely cosmetic work often doesn't — but a true whole-home renovation rarely stays cosmetic. Pulling proper permits protects your safety, your insurance, and your future sale, since unpermitted work is a red flag for buyers and their lawyers.

How do I control cost on a whole-home renovation?

Prioritize scope honestly. Decide what's structural and non-negotiable versus what's a "nice to have."
Keep major plumbing stacks and load-bearing walls where they are when the layout allows.
Lock finishes early to avoid schedule-stalling change orders.
Get one accountable team. A design-build firm aligns design, budget, and construction, which is where most whole-home overruns are avoided.

Should I renovate or move?

At the high end, a full gut can approach the cost of buying elsewhere — so the renovate-or-move math matters. Location, attachment to the neighbourhood, and land value all factor in. Weigh it with our guide on whether to renovate or move in the GTA, and if you're focusing spend on the highest-impact rooms, see our guides to kitchen and bathroom renovation costs.

A note on regulated services: Build Theory is a licensed and insured design-build firm; our design is led by a Registered Designer under the OBC. We do not provide architectural or registered interior design services — where those regulated services are required, we can refer you to a licensed architect or an ARIDO-registered interior designer.

Planning a whole-home renovation in the GTA? Book a free consultation with Build Theory and we'll help you build a realistic, all-in budget — including the soft costs most quotes leave out.