Do you have a floor addition project for your luxury house? Do business with Construction Précellence, your general contractor specializing in floor additions in Mirabel. Turnkey construction service. Call us for a quote!

Do business with Construction Précellence for your project to add a new floor to your prestige home!

Even if you have found your dream home with a luxury house, choosing to add a new floor is an interesting solution to a space problem. This type of construction is also a sustainable investment that will allow you to increase the value of your home and give you the space you need. Finally, a floor addition can allow you to create an intergenerational home to accommodate an aging parent or create a home for additional income. At Construction Précellence, we offer you a turnkey floor addition service adapted to your needs and budget. Composed of architects, engineers, building inspectors and designers, our team will be present at all stages of your project: first home consultation, evaluation of your needs, obtaining permits, design advice, choice of materials, drawing up the schedule and budget, etc. For the realization of each project, Construction Précellence has established sustainable partnerships with architects, inspectors, window and door manufacturers, building material suppliers, electricians, plumbers and construction workers to ensure that each project is a success.

What floor additions can we do?

In business since 1948, Construction Précellence has all the necessary certifications and licenses to carry out a multitude of projects, even when it is a project as important as a floor addition. Here is an overview of the different floor addition projects we can carry out:

  • Adding a full floor: Adding a full floor is a more complex and expensive project, but it is, after all, a sustainable investment. The construction of a complete floor allows you to create a living space such as an apartment or an adapted intergenerational house.
  • Adding a half floor: For logistical or budgetary reasons, it is not always possible to add a complete floor to a house. The half-floor option offers you an interesting possibility of enlargement.
  • Addition of a half-floor on garage: This option is still very popular. Your garage allows you to benefit from a “base” for your project. This expansion will considerably increase your living space at a more reasonable price. You will therefore have the advantage of a room of interesting dimensions, to which you can give a completely new function or, to refurbish the existing rooms of your home.

What are the costs associated with a floor addition?

  • Adding a floor above a ground floor (+/- 1000 ft2): Prices start at around $175,000 and the average is around $200,000
  • Adding a floor (+/- 1000 ft2) above a floor to make a 3rd floor plus the basement level: Prices start at around $210,000 and the average is around $250,000
  • Adding a floor above a garage or other room (+/- 300 ft2): Prices start at around $70,000 and the average is around $85,000.
  • Adding a half-floor above a ground floor (+/- 600 ft2): costs start at around $130,000 and the average is around $140,000.
  • Adding of a room (mezzanine style) above the level of a flat roof (+/- 300 ft2) with a roof terrace: Prices start at $125,000 and the average is around $140,000.

Why choose Construction Précellence for your project to build a new floor on your luxury home?

Construction Précellence has explored all aspects of floor additions to prestigious and high-end homes. Whatever the work to be done (construction, demolition, cleaning, fitting out, repair), our designers and construction team will meet all challenges.

  • Home consultation with a designer and architectural technician
  • Taking of measurements
  • 3D plans and 3D model and follow-up of the manufacturing of the elements
  • Delivery and installation of the equipment
  • Disposal of remaining material in an environmentally friendly manner
  • Quality of the workforce and superior knowledge
  • Compliance with the highest standards of cost control
  • Obtaining building permits
  • Close adherence to deadlines and budget
  • Protection and cleanliness of the workplace
  • Certified and qualified construction team
  • Supervision of workers at all times
  • Siding/cladding renovation
  • Addition / change of the electrical and plumbing system
  • Adding doors and windows
  • Residential demolition
  • High quality materials


Any questions?

If you would like to know more about our services as a general contractor specializing in floor additions to luxury homes, our prices, or our other services, we invite you to contact us by email, by phone or to come and meet us at our offices in Montreal’s North Shore. Our team will be happy to answer your questions in order to start your project as soon as possible.