Renovating a house in Montreal can range from a relatively modest interior update to a major six-figure project. The final cost depends on the size and age of the property, the rooms being renovated, structural changes, material choices, labour, permits and unexpected conditions behind walls or under floors.
For homeowners planning a project, a useful starting point is to think in ranges rather than a single “average” price. As a broad planning estimate—not an official government price list—a light cosmetic renovation may stay in the tens of thousands of dollars, while a substantial whole-home renovation can reach $100,000–$300,000 or more. Older Montreal homes, structural work and premium finishes can push budgets higher.
Typical House Renovation Costs in Montreal
The figures below are broad budgeting ranges for planning purposes. Actual contractor quotes can vary considerably depending on scope, property condition and specifications.
| Renovation Type | Broad Planning Range (CAD) |
|---|---|
| Cosmetic updates / painting / flooring | $10,000–$30,000+ |
| Kitchen renovation | $25,000–$75,000+ |
| Bathroom renovation | $15,000–$40,000+ |
| Basement renovation | $30,000–$80,000+ |
| Major multi-room renovation | $75,000–$200,000+ |
| Extensive whole-home renovation | $150,000–$300,000+ |
These ranges should not replace written estimates from qualified contractors. A project involving structural changes, custom millwork, major electrical or plumbing upgrades, foundation work, asbestos or mould remediation, or high-end finishes may fall well outside them.
What Makes a Montreal Renovation More Expensive?
1. The age and condition of the property
Montreal has many older homes, duplexes and triplexes. Once walls or floors are opened, a contractor may discover outdated wiring, plumbing problems, water damage, insufficient insulation or structural issues. That is why a contingency reserve is important, particularly for older properties.
2. Kitchen and bathroom work
Kitchens and bathrooms are often among the most expensive rooms to renovate because they combine cabinetry, fixtures, finishes, plumbing, electrical work and skilled labour. Moving sinks, showers, appliances or walls generally costs more than keeping the existing layout.
3. Structural changes
Removing or altering walls, changing foundations, increasing floor area or changing room divisions can turn a straightforward renovation into a much larger project. The City of Montréal states that work affecting walls or foundations, or changing room dimensions, divisions or use, requires a permit. See the City of Montréal’s interior renovation guidance.
4. Materials and finishes
Flooring, countertops, cabinets, windows, fixtures and appliances can create a large difference between two projects with otherwise similar layouts. Establishing a materials allowance before work begins makes it easier to compare contractor estimates.
5. Labour and professional services
Your budget may need to include not only construction labour but also architects, engineers, designers and other professionals. The City includes professional fees, plans, labour, materials, equipment and taxes when determining the declared cost of work for a renovation permit.
Do You Need a Renovation Permit in Montreal?
Not every interior update requires a municipal permit. According to the City of Montréal, certain aesthetic work—such as repainting, changing flooring, replacing cabinets or counters, and replacing a sink or bathtub—may not require one. More substantial work can require a permit, and requirements may vary with the project and borough. Homeowners should verify their specific work before construction begins.
For renovation work that requires a permit, Montréal currently calculates the basic application fee at $9.80 per $1,000 of declared work. The minimum for a strictly residential building is $167.40. Additional charges can apply to heritage buildings or areas subject to special architectural rules. Check the City of Montréal renovation permit fee information.
What About Plumbing and Electrical Work?
The City notes that it does not issue the same municipal renovation permits for plumbing, electricity, or electric and gas heating work; these areas remain subject to provincial requirements. Homeowners should confirm applicable rules and use appropriately qualified professionals where required.
Before hiring a contractor, it is also sensible to verify licensing and requirements through the Régie du bâtiment du Québec (RBQ).
Can Quebec Renovation Grants Reduce the Cost?
Energy-efficiency work may qualify for provincial assistance. Québec’s Rénoclimat program covers eligible measures such as insulation, airtightness improvements, qualifying doors and windows, and certain mechanical systems. Review the official Rénoclimat program.
A critical detail is timing: homeowners seeking Rénoclimat assistance generally need a pre-retrofit energy evaluation before starting eligible work, followed by the renovations and a post-retrofit evaluation. Québec currently lists assistance such as $400–$800 for qualifying airtightness improvements, while insulation grants vary by the part of the home and the improvement achieved.
How to Build a Realistic Renovation Budget
Start by defining exactly what will and will not be renovated. Obtain detailed written estimates based on the same scope so that quotes can be compared fairly. Separate essential construction from optional upgrades, and confirm whether taxes, demolition, disposal, permits, plans and finish materials are included.
It is also prudent to keep a contingency reserve. Renovations rarely become cheaper after walls are opened, and older homes can reveal conditions that were impossible to price accurately beforehand.
Example: Budgeting a $100,000 Renovation
A homeowner with a $100,000 total budget should avoid committing the entire amount to the initial construction quote. Part of the budget may be needed for design or engineering, permits, finish upgrades and unforeseen work. The exact allocation depends on the property, but keeping a reserve gives the project room to absorb surprises without immediately exceeding the overall budget.
How to Compare Montreal Renovation Quotes
Do not compare contractors only by the final number. Check whether each estimate covers the same demolition, labour, materials, fixtures, cleanup, permits and professional services. Ask what is excluded, how changes are approved and priced, and what happens if hidden conditions are discovered.
A lower initial quote can become more expensive if important items are treated as extras later. A detailed scope of work makes both budgeting and contractor comparison easier.
Final Takeaway
There is no single price for renovating a house in Montreal. A smaller cosmetic project may cost tens of thousands of dollars, while a comprehensive renovation can move well into six figures. The condition of the property, structural work, kitchens and bathrooms, material selections and professional requirements all influence the final total.
Before work begins, verify permit requirements with the City of Montréal, check applicable Québec rules, investigate energy-efficiency assistance before starting eligible upgrades, and obtain detailed written estimates. Those steps provide a much more reliable budget than relying on a citywide average alone.
Frequently Asked Questions
How much should I budget for a full house renovation in Montreal?
For initial planning, a substantial whole-home renovation can easily require a six-figure budget. A broad range of $150,000–$300,000+ can be useful for early planning, but the actual amount depends heavily on home size, condition, layout changes and finishes.
Do I need a permit to renovate a kitchen in Montreal?
Some cosmetic kitchen work may not require a permit, while structural changes or changes to room dimensions, divisions or use can require one. Check the City of Montréal requirements for your specific project and borough before starting.
How much does a Montreal renovation permit cost?
For qualifying renovation permits, the City currently states a basic fee of $9.80 per $1,000 of work, with a minimum of $167.40 for a strictly residential building. Additional fees can apply in certain heritage or specially regulated areas.
Are renovation grants available in Quebec?
Yes, depending on the work. Rénoclimat provides financial assistance for eligible energy-efficiency improvements. Program requirements should be checked before starting work because a pre-retrofit evaluation is required for Rénoclimat eligibility.
