You wish to enlarge rooms in your duplex or triplex? Call on Construction Précellence for your duplex and triplex expansion project in Montreal. Wide range of services in renovation, construction, design, architecture and expansion. Call us for a quote!

Work with an experienced contractor for the expansion of your duplex and triplex in Montreal!

Whether it’s for the kitchen, bathroom, basement, bedroom, or garage, an addition can significantly help beautify your duplex or triplex and make it more functional, comfortable, and valuable. A carefully planned expansion not only enhances the look of your property but also adapts it perfectly to your family’s evolving needs. We offer high-quality construction, renovation, and home expansion services, as well as an exceptional, client-focused approach to architecture, design, and project management.

Our experienced and multidisciplinary team includes interior designers, kitchen designers, specialized technicians (painter, cabinetmaker, electrician, plumber, plasterer, etc.), architectural technologists, draftsmen, and site supervisors. From your first meeting, we will help you set up the main stages of your expansion project—plans, budget, and schedule—with clarity and precision. We will accompany you every step of the way, from measurements and design to the choice of materials, construction, and the final delivery of your project, ensuring quality, transparency, and satisfaction.

What kind of duplex and triplex expansion projects can Construction Précellence work on?

Here is an overview of the construction work we can do:

• Floor Addition
• Bathroom expansion
• Bedroom expansion
• Kitchen expansion
• Dining room expansion
• Basement expansion
• Solarium (sunroom) expansion
• Entrance hall expansion

What is the average price of a duplex and triplex expansion in Montreal?

• On a 12 ‘x 12’ floor (semi-finished basement included): costs start around $125,000 and the average is around $150,000
• On a 12 ‘x 25’ floor (semi-finished basement included): costs start around $170,000 and the average is around $200,000
• On two floors 12 ‘x 12’ (semi-finished basement included): costs start around $130,000 and the average is around $150,000
• On two floors 12 ‘x 25’ (semi-finished basement included): costs start at around $225,000 and the average is around $260,000
• Construction of a 12 ‘x 25’ garage: costs start around $130,000 and the average is around $ 150,000.

*Please note that all prices presented here are approximate.

Here are also some elements that can influence the cost of expanding the rooms of your duplex or triplex:

• Level of complexity of architectural integration
• Building the addition on piles instead of a foundation will lower the cost by about 10%.
• Degree of difficulty to join the new construction to the existing one
• Work to be done on the existing building to carry out the work
• Access to the work site
• Choice and quantity of doors and windows
• Complete finishing of the basement
• Choice of materials

Why choose Construction Précellence for your duplex and triplex expansion project?

• Company established since 1948
• Choice of quality materials according to the client’s budget
• In-home consultation with a professional designer
• Price estimate for your construction and renovation project
• Measurements taken by your designer
• Plan and 3D model and follow-up of the manufacturing of the elements
• Delivery and installation of the materials
• Quality of workmanship and superior knowledge
• Respect of the highest standards in terms of cost control
• Strict adherence to deadlines and the established budget
• Protection and cleanliness of the work site
• Management of permit applications

Any questions?

If you have any questions about our duplex and triplex expansion service, our other renovation services, our designers or our prices, don’t hesitate to contact us by email, by phone, or to come and meet us in person at our Montreal office. Our team will be happy to welcome you and give you all the information you need.

Our team can do your duplex/triplex extension everywhere in Montreal :