How Much Does a Home Renovation Cost in Montreal?

It's usually the first question a homeowner asks, and it's also the hardest one to answer with a single number: how much does a renovation actually cost in Montreal? The honest answer is that it depends on more variables than most people expect - the age and condition of your home, the scope of the work, the materials you choose, and whether anything is hiding behind your walls once demolition starts. What we can do is walk through what actually drives the price up or down, room by room, so you can plan a realistic budget before you start calling contractors.

What actually affects renovation cost

Before getting into specific rooms, it helps to understand the handful of variables that swing a renovation budget more than anything else. Almost every cost conversation with a contractor comes back to these factors.

• Scope of work - a cosmetic refresh (paint, fixtures, flooring) costs far less than a full gut renovation that touches plumbing, electrical, and layout.
• Layout changes - moving a wall, relocating plumbing, or reconfiguring a room's footprint adds structural, electrical, and plumbing labour that a like-for-like replacement does not require.
• Age and condition of the home - older Montreal homes and triplexes often reveal outdated wiring, knob-and-tube electrical, or plumbing that needs to be brought up to code once walls are opened.
• Material and finish selections - cabinetry, countertops, tile, and fixtures span a wide price range. Two kitchens with an identical layout can have very different budgets based on finish level alone.
• Permits and inspections - projects that require structural, electrical, or plumbing permits add both time and cost to a project, but they are not optional when the work requires them.
• Accessibility and building type - condo renovations often involve board approval, freight elevator bookings, and stricter working-hour rules that can affect labour costs and timeline.
• Who manages the project - a general contractor coordinating every trade under one estimate tends to prevent the delays and miscommunication that drive up costs when homeowners coordinate multiple trades themselves.

With those factors in mind, here is how they typically play out across the most common renovation types we see across Montreal, Westmount, Outremont, NDG, and the South Shore.

Kitchen renovations

Kitchens are usually the most expensive room to renovate per square foot because they combine cabinetry, countertops, plumbing, electrical, and appliances in one space. A kitchen where the layout stays the same - cabinets, countertops, and appliances replaced in place - costs meaningfully less than a kitchen where a wall comes down or the island moves to a new location, since that involves relocating plumbing and electrical rough-in.

Cabinet choice is one of the biggest swing factors. Stock or semi-custom cabinetry costs less than fully custom cabinetry built to a specific layout. Countertop material matters too - laminate, quartz, and natural stone all sit at different price points, and each has different installation requirements. If you're weighing your options, our kitchen renovations page walks through what's typically included in a Montreal kitchen project.

Bathroom renovations

Bathroom costs are driven by the same core question as kitchens: are you replacing what's there, or reconfiguring the space? A tile and fixture refresh in an existing footprint is a smaller project than a full gut renovation with a custom shower, in-floor heating, and a reconfigured layout.

Waterproofing is not optional and it is not a place to cut cost - improper waterproofing behind tile is one of the most expensive problems to fix after the fact, because it usually means removing finished tile to correct it. Tile format and material selection (ceramic versus natural stone, simple versus intricate patterns) is the other major cost driver in a bathroom project. Our bathroom renovations page covers what's typically included.

Basement renovations

Basement projects vary more than almost any other renovation type, because the starting condition of an unfinished basement varies so much from home to home. A basic finish - framing, insulation, drywall, flooring, and lighting in an open-concept layout - costs less than a basement with a bathroom addition, a kitchenette, or a legal secondary suite with a separate entrance.

Moisture and drainage assessment should always happen before framing begins. In Montreal's older housing stock, this step sometimes uncovers issues that need to be addressed first, which can affect the budget. It's a step worth doing properly rather than skipping to save time. Our basement renovations page has more detail on how we approach these projects, including secondary suites.

Home additions

Additions - a second floor, a rear extension, a garage, or a sunroom - are among the most variable projects to price, because they involve new foundation or footing work, structural engineering, framing, roofing, and full mechanical systems (electrical, plumbing, HVAC) in addition to interior finishing. The size of the addition, the complexity of tying the new structure into the existing roofline and foundation, and the finish level inside all affect the final number significantly.

Additions almost always require permits and often require an engineer's stamp on structural drawings, so build permit timelines into your planning from day one - not just the construction cost. See our home additions page for how we scope these projects from design through final inspection.

Full home renovations

A full home renovation - touching most or every room - is priced as the sum of its parts, but it also benefits from some efficiency: one crew, one timeline, and one point of contact instead of coordinating separate projects room by room over several years. The tradeoff is that a full home renovation is also the largest financial commitment and the longest timeline of any renovation type, so realistic sequencing and a clear-eyed budget matter more here than anywhere else. Our full home renovations page outlines how we structure larger, multi-room projects.

Condo renovations

Condo renovations in Montreal carry cost factors that houses don't. Most condo boards require approval of renovation plans before work starts, and many buildings restrict working hours, require freight elevator bookings, and mandate that certain trades carry specific insurance documentation. None of this necessarily makes the construction itself more expensive, but it does add administrative steps and potential timeline delays that are worth planning for. Noise-generating work (demolition, tile cutting) is also often restricted to specific hours or days in condo buildings.

If you're renovating a condo, ask your board for their renovation policy in writing before you finalize a budget or timeline with your contractor. Our condo renovations page covers how we handle board coordination and building management requirements.

Permits and why they matter for your budget

Permits are frequently misunderstood as a bureaucratic add-on rather than part of the actual cost of a project. In reality, permit fees themselves are usually a small part of a renovation budget - the bigger cost impact comes from the fact that permitted work has to meet current building code, which sometimes means addressing things (electrical panel capacity, structural support, egress windows) that weren't part of your original renovation wish list but are required once a permit application is filed.

Permit requirements vary by municipality and by borough within Montreal, and they depend on the specific scope of your project - which is exactly why we don't give blanket permit advice in this article. For a closer look at when permits are typically required and how to verify requirements for your address, read our guide on permits for home renovations in Montreal.

Why you need a contingency budget

Almost every experienced renovation contractor will tell you the same thing: set aside a contingency on top of your baseline budget, especially for older homes. Opening a wall in a pre-war Montreal home can reveal outdated wiring, undersized plumbing, or structural surprises that were impossible to see during the estimate walkthrough. A contingency isn't a sign that your budget was wrong - it's what keeps a manageable surprise from turning into a stalled project or a difficult conversation partway through construction.

How to plan a realistic renovation budget

The homeowners who have the smoothest renovation experience tend to do a few things before they ever sign a contract.

1. 1Define your scope before requesting quotes. "Renovate the kitchen" means something different to every contractor. Write down what you want changed, kept, and prioritized.
2. 2Get a detailed written estimate, not a rough number over the phone. A real estimate breaks down labour, materials, and what's included so you can compare quotes accurately.
3. 3Ask what's excluded, not just what's included. Permit fees, appliance costs, and design fees are sometimes handled separately - know this upfront.
4. 4Build in a contingency before you finalize your budget, not after you're already over it.
5. 5Confirm the payment schedule and what triggers each payment, so it's tied to project milestones rather than arbitrary dates.
6. 6Ask about the timeline in writing, and ask what happens - and who tells you - if it changes.

If you want a starting point before you request quotes, our complete renovation planning checklist walks through every step from budget to final inspection.