More space for your family, a project designed with your existing home in mind.

Looking to expand your home in Rosemont without leaving your neighbourhood? As a general contractor, Cré-Actif Construction supports you in the planning and execution of your project. Whether it's an extension, adding a floor, or finishing a basement, we evaluate the possibilities based on your home, your needs, and your budget.
Every project begins with an understanding of the building and how you live in it. We seek to determine where to create useful space, how to integrate new rooms into existing areas, and which aspects will need to be studied with the relevant professionals.
Our experience includes the Résidence Laurier in Rosemont, where the excavation and redevelopment of the basement allowed for the creation of new spaces tailored to a family's needs.
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Rear or side extension
A home extension can create the space needed for a larger kitchen or a new family room. The lot, access points, and municipal requirements guide the possibilities. We prepare the integration of the new section by taking into account the foundations, the structure, and the flow between rooms.
Discover our expansion services
Adding a floor
Adding a floor can be a great way to gain space without extending your home into the yard. It requires an assessment of the structure and foundations by an engineer, as well as a review of what is permitted by municipal regulations. In Montreal, the La Roche residence illustrates this approach: the addition of a floor with a mezzanine relies on a structure independent from that of the neighbouring buildings.
See the Résidence de la Roche
Excavation and basement finishing
Finishing a basement is a great way to create extra bedrooms or new living areas. Depending on existing conditions, the project may require excavation, foundation work, or a reconfiguration of the space. Headroom, access, and flow are all studied to ensure a functional layout that is well-integrated into the home.
Discover the Laurier Residence

Understanding your priorities
The first meeting is used to clarify your needs, your budget, and the desired transformations. We also examine the potential of your current space: sometimes a better layout can meet your needs without the need for an expansion.
Evaluating the work
Together with the relevant professionals, we prepare the choices related to the building and any new components. Access constraints, logistics, and the sequence of work are all taken into account during site preparation. We also consider our relationship with neighbouring properties and the impact of the work on your daily life.
Coordinating the project
Our role as a general contractor is to coordinate the various parties involved and keep you informed at every stage, with clear communication regarding the choices to be made and their implications.
What rules apply to an expansion in Rosemont–La Petite-Patrie?
We must examine the building, the lot, your space requirements, and the regulations applicable to the property. This assessment allows us to compare options before deciding on a course of action.
What factors influence the budget?
The scale of the work, the condition of the structure, foundation work, site access, and the materials selected all influence the cost. An assessment tailored to your building will help clarify the budget.
Do I need to have plans ready before contacting you?
You can contact us during the early stages of your project. If you already have an architect, we will collaborate with them. If not, we can point you toward the professionals needed to bring your project to life.
Are excavating a basement and expanding it the same thing?
Not necessarily. Excavation increases living space without changing the building's footprint, whereas an extension adds ground-level space. The right solution depends on the building, the lot, and the type of space you are looking for.
How do I choose between an extension, adding a floor, and a basement renovation in Rosemont?
The choice depends on the space you are looking for and the potential of your home. An extension takes up part of the yard; adding a floor requires an assessment of the structure and foundations; finishing a basement depends primarily on the available height and access. In Rosemont, Cré-Actif evaluates these different options based on your needs, your budget, and the specific constraints of your property to determine the most appropriate solution.