Home addition in Greater Montreal

Construction Précellence has extensive expertise in the design and implementation of home addition projects of all types. Whether modern or traditional architecture, every small detail is considered to ensure the new structure is perfectly integrated with the existing one

Planning your home addition project

A home addition project requires proper planning. In this regard, a high level of construction expertise contributes to the design team’s success in preparing plans and specifications. Moreover, the company is familiar with building codes and standards as well as municipal by-laws for the purposes of obtaining a building permit.

Enhance your interior spaces

New interior spaces are carefully optimized to provide future occupants with creative, simple and efficient layout solutions. The designers will guide you through the choice of high quality durable materials while always respecting the chosen style and the budget.

Project execution

Project work is carried out by the Construction Précellence team, comprised of home addition workers and specialists. Throughout the project, you will continuously receive comprehensive support and you can rest assured that deadlines will be respected.

Additional services

Construction Précellence can also provide a wide range of services to complement the home extension project including kitchen renovation, bathroom renovation or exterior redesign. Moreover, our flexible project approach gives every client the freedom to choose between full or partial implementation if they wish to carry out certain work independently.

Home addition costs in Greater Montreal

Home extension project examples

  • On a 12 ‘x 12’ floor (semi-finished basement included): costs start around $90,000 and the average is around $100,000
  • On a 12 ‘x 25’ floor (semi-finished basement included): costs start around $120,000 and the average is around $150,000
  • 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 $175,000 and the average is around $185,000
  • Construction of a 12 ‘x 25’ garage: costs start around $100,000 and the average is around $ 110,000. Note: Currently, there is almost no difference between the construction of a garage and the construction of a habitable room.

Factors influencing project costs:

  • Architectural integration complexity
  • Carrying out the extension on foundation piles will lower the cost by approximately 10%
  • Degree of difficulty joining new structures to existing ones
  • Work needing to be done on the existing building to carry out the project
  • Worksite accessibility
  • Door and window choice and quantity
  • Finishing the basement
  • Material choice

Tell us about your home addition project

Do not hesitate to contact us with any questions regarding our services, or to discuss your project with us to discover how we can ensure its success!

Our Approach: 360º

Our team is able to handle all the dimensions of a 360º degree building project.

Construction Precellence ensures that you receive full support, a design tailored to your wishes and needs and guaranteed quality for your project.

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Interior & Exterior Design
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Technical advice
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A trustworthy budget study
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Approvals & Permitting
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Construction & Procurement
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Project Management
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Flooring Installation
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Plastering & Painting
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*We do not offer these services on an individual basis, but only as part of a complete turnkey project.



Montreal – South Shore – North Shore

70 years of pure creativity and innovation

Montreal company founded in 1948

Our renovation and construction services

Construction Precellence accompanies you during all the stages of your project, from the design to the realization, in order to realize the works which correspond perfectly to your desires and your needs.

Why Us

Comprehensive Support

Throughout your project, from the first meeting until the work is finished, you will receive comprehensive support from both the design team and work teams. The specialists will help you make the best decisions to plan and carry out your construction or renovation project in Greater Montreal.


Tailored Design

The Construction Précellence team offers its expertise and passion to create homes that are carefully tailored to the desires and needs of their clientele. Each project undergoes a unique creative process in which all the best ideas are gathered to produce an ideal design. Whether your style is more modern or classic, your new milieu will be designed to reflect you.


Flawless Execution

Work execution and scheduling is carefully planned before the project begins to ensure the best possible experience. The teams of workers and professionals have, first and foremost, respect for the premises and the residents and make certain to carry out high quality work. Construction Précellence is the only company today that offers a work schedule guarantee. In other words, you can rest assured that deadlines will be respected.



Our professionals assist you in your efforts to obtain, if necessary, funding for your project.

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Our Accreditations

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Construction Précellence is a residential renovation company that specializes in turnkey projects. It has stood out since 1948 with a unique approach that combines all aspects of renovation (Architecture - Design - Construction) in the same service.
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