South Shore Renovation
How Much Does a Turnkey Renovation Cost on Montreal’s South Shore?
A turnkey renovation on Montreal’s South Shore generally costs between $100 and $300 per square foot, depending on the level of finishes, and takes 12 to 16 weeks for a major project. In Boucherville and Saint-Bruno-de-Montarville, where many homes built between the 1970s and 1990s are ready to be reimagined, Groupe Cartier guides homeowners from design to delivery with one contact accountable for the budget and schedule.
Montreal’s South Shore has its own character. It is home to established families, generous lots and houses that have aged well, even if their interior layouts belong to another era. Closed-off kitchens, cramped bathrooms and underused basements are among the requests our general contracting team receives most often from this part of Greater Montreal.
Since 1998, Groupe Cartier has supported homeowners throughout the metropolitan area with turnkey renovation projects. Our integrated in-house team includes APDIQ-member interior designers, kitchen designers, project managers, site supervisors, carpenters and cabinetmakers. For discerning clients in Boucherville and Saint-Bruno, this structure removes a common renovation frustration: trying to coordinate unfamiliar subcontractors.
Boucherville and Saint-Bruno-de-Montarville: the South Shore’s counterparts to Westmount
Boucherville and Saint-Bruno-de-Montarville are known for mature, tree-lined neighbourhoods where families often stay for generations. Many homes were built between 1970 and 1990. They have solid structures and well-sized lots, but their original compartmentalized layouts often no longer meet today’s expectations for open spaces, natural light and storage.
These two cities attract higher-income households, much like affluent areas on the island of Montreal where average family income exceeds $250,000 in several neighbourhoods, including Westmount, Hampstead, Town of Mount Royal and Outremont. Homeowners in Boucherville and Saint-Bruno often share the same priorities: durable materials, thoughtful design and a carefully managed project without compromising quality. On the larger lots of the suburbs and South Shore, homeowners may also weigh whether to add space or reconfigure what they already have.
The most requested projects in these communities include:
- Opening up the main floor to connect the kitchen, dining room and living room.
- Custom kitchens with a central island and full-height Miralis storage.
- Complete renovations of primary and family bathrooms.
- Reconfiguring entire floors, including bedrooms and custom storage.
- Finishing or optimizing a basement for family space or a home office.
South Shore communities served by Groupe Cartier
Groupe Cartier’s showroom at 9090 Avenue du Parc in Montreal is within about 20 minutes of many South Shore communities via the Jacques Cartier and Champlain bridges or the Louis-Hippolyte-La Fontaine tunnel. That proximity supports prompt home visits and regular site follow-up wherever your South Shore property is located.
Our team serves the region, including:
- Longueuil: Vieux-Longueuil, Saint-Hubert and Greenfield Park.
- Saint-Lambert, where the character of riverside homes often calls for a renovation that respects the existing building.
- Brossard, a growing city with many 1980s and 1990s homes ready for modernization.
- Boucherville and Saint-Bruno-de-Montarville, priority areas for our high-end South Shore projects.
- Sainte-Julie, Varennes and Saint-Basile-le-Grand, where larger lots can make an addition worth considering alongside interior work.
- La Prairie, Candiac, Delson, Saint-Constant and Sainte-Catherine, communities with expanding residential areas.
- Chambly and Carignan, where older homes benefit from careful renovations that preserve their original character.
Whatever the municipality, the process stays the same: a discovery call, a home visit and a clear design and budget plan before construction begins.
How much does a turnkey renovation cost on the South Shore?
In 2026, Greater Montreal market prices, including those on the South Shore, generally fall within the following ranges depending on the project and finish level.
| Project type | Price range | Details |
|---|---|---|
| Complete renovation (mid-range) | $100–$175/sq. ft. | Quality finishes and functional layouts. |
| Complete renovation (high-end) | $175–$300+/sq. ft. | Premium materials and custom design. |
| Major renovation (structure, electrical, plumbing) | $150–$260/sq. ft. | Includes insulation and electrical and plumbing upgrades. |
| Custom kitchen | $30,000–$60,000 | Depends on cabinet and countertop materials. |
| Bathroom | $25,000–$55,000+ | From standard to prestige finishes. |
| Basement | $70–$140/sq. ft. | Complete finishing for family space or an office. |
| Whole house (1,200–2,500 sq. ft.) | $210,000–$750,000+ | High-end full-home renovation. |
Allow for costs beyond the base budget: a contingency of about 15% for unforeseen conditions, plus applicable GST and QST (14.975% combined). A well-planned project with material selections made before construction begins helps limit cost overruns.
How turnkey service protects your budget and timeline
On the South Shore, as elsewhere in Greater Montreal, a major financial risk in renovation is coordinating trades managed separately: cascading delays, unclear responsibilities and unexpected invoices. Groupe Cartier’s turnkey approach places the project with one team, from the first drawing to the handover.
In practical terms, that means:
- One project manager accountable for quality, deadlines and budget.
- An in-house team of carpenters and cabinetmakers instead of unfamiliar subcontractors hired one by one.
- Plans and material selections finalized before construction to avoid changes mid-project.
- Interior design considered from the outset to make the most of available space, particularly in 1970s–1990s houses with compartmentalized floor plans.
Typical timelines are similar across Greater Montreal: 12 to 16 weeks for a major renovation involving structural work, 6 to 10 weeks for a full kitchen project, and 3 to 6 weeks for a cabinet-only replacement.
Kitchens and bathrooms: the heart of South Shore projects
The kitchen remains the project most often requested by homeowners in Boucherville and Saint-Bruno-de-Montarville. Groupe Cartier’s projects illustrate this trend. The Sgambato project, for example, included a complete kitchen renovation and two bathrooms, a common combination for South Shore family homes.
Groupe Cartier distributes high-end Miralis cabinetry from a Quebec manufacturer founded in 1976 with more than 45 years of experience. Its Luminescence innovation integrates lighting into cabinets during factory production, while Richelieu hardware provides full-extension soft-close drawers and adaptable storage. Our guide to custom kitchen costs breaks down these options item by item.
For countertops, South Shore homeowners increasingly choose ultra-compact Dekton surfaces from Cosentino, valued for their scratch and heat resistance—a practical choice for active families.
A construction site managed by certified teams
Whether the project is in Boucherville, Saint-Lambert or Brossard, the same standards guide the site. Groupe Cartier has held RBQ licence no. 8264-6134-49 since May 2002, providing homeowners with licensing and bonding protections. The company has been an APCHQ member since May 2008, and its workforce has held CCQ certification for more than 12 years.
Our designers are APDIQ members, supporting a professional approach to layout and space planning. That expertise is especially useful in South Shore homes where original floor plans can limit circulation and daylight. Learn more about these credentials on our About Us page.
Frequently asked questions
What is the average budget for a turnkey renovation on Montreal’s South Shore?
A complete South Shore renovation generally costs $100 to $300 per square foot, depending on the level of finishes. A major renovation involving structure, insulation, electrical and plumbing work costs about $150 to $260 per square foot. For a high-end 1,200- to 2,500-square-foot home, the total budget is typically $210,000 to $750,000 or more, before taxes and a 15% contingency.
Does Groupe Cartier serve Boucherville and Saint-Bruno-de-Montarville?
Yes. Groupe Cartier’s showroom at 9090 Avenue du Parc in Montreal is about 20 minutes from Boucherville and Saint-Bruno-de-Montarville via the Louis-Hippolyte-La Fontaine tunnel or the Jacques Cartier Bridge. The company also serves Saint-Lambert, Brossard, Longueuil, Sainte-Julie, Varennes, La Prairie, Candiac and the wider South Shore within a 30 km radius.
How long does a major turnkey renovation take?
A major renovation with structural work generally takes 12 to 16 weeks from design to installation. A full kitchen project takes 6 to 10 weeks, while cabinet-only replacement takes 3 to 6 weeks. These timelines include design, material selection and execution overseen by one project manager.
Why choose one turnkey contractor instead of separate subcontractors?
On the South Shore, many projects that go off track do so because separately managed trades are poorly coordinated, rather than because of an unforeseeable problem. Entrusting design, plans, material choices and construction to one in-house team removes a common source of delays and cost overruns.
Let’s discuss your South Shore project
A free, no-obligation discovery call to review your budget and plan a home visit in Boucherville, Saint-Bruno or elsewhere on the South Shore.
Schedule My Discovery CallOr call us: 514 629-6029
