Garage, Rooftop Terrace or Mezzanine Addition

What is the addition of a garage, rooftop terrace, or mezzanine?

Adding a garage, rooftop terrace, or mezzanine consists of expanding or upgrading your home by creating a new functional space that improves comfort, usability, and property value.Each type of addition has its own structural, architectural, and regulatory requirements.

1. Garage Addition
A garage can be attached or detached and may include:parking spacestorageworkshopfuture conversion potential (e.g., office or living space)This addition typically requires foundation work, structural plans, and municipal permit approval.

2. Rooftop Terrace Addition
A rooftop terrace transforms an unused roof into a livable outdoor area.Because it adds weight and requires waterproofing, insulation, and safety barriers, it must be engineered to ensure:
structural capacity
proper drainage
code-compliant guardrails
long-term durability

3. Mezzanine Addition
A mezzanine adds interior square footage by creating an elevated platform or extra level.It is ideal for:
lofts
studios
open-concept homes
maximizing vertical space
Structural engineering is essential to support new loads and ensure safe integration into the existing structure.
Before photo of the Mascouche house labeled ‘Avant,’ showing the existing single-story brick exterior before adding a rooftop garage.

Why choose us for your garage, rooftop terrace, or mezzanine addition?

Choosing SCI Globale Inc. for adding a garage, rooftop terrace, or mezzanine means working with a multidisciplinary team capable of handling every structural, architectural, and regulatory aspect of these complex projects.

Whether the addition requires new foundations, structural reinforcements, beam design, waterproofing systems, or architectural integration, our engineers, architects, and technologists work together to ensure a safe and seamless result.

With SCI Globale, you benefit from:
Precise structural evaluations to ensure your home can safely support the new addition
Architectural design that blends perfectly with your home’s style
Permit-ready plans that comply with Québec building and municipal standards
Customized solutions tailored to your needs, space, and budget
Safe execution through engineered load calculations, reinforcements, and detailed plans
Optimized functionality for your new garage, mezzanine, or rooftop terrace
Clear communication throughout the project for a stress-free experience
Whether you’re expanding with a garage, enhancing your living experience with a rooftop terrace, or maximizing space with a mezzanine, SCI Globale ensures a result that is safe, compliant, durable, and aesthetically integrated.

Architectural plan showing structural details for adding a garage on the roof of the Mascouche residence, including truss and roof support sections.
Après image of the Mascouche house showing the completed rooftop garage addition, labeled ‘Après,’ featuring new upper-level windows and updated landscaping.
Choose this option

Projet d'ajout d'un (Garage/Terrasse sur le toit/Mezzanine)

Architectural render of the Duplessis residence, showing a modern multi-level design with stone façade, large windows, and landscaped driveway.After photo of the Mascouche residence showing the completed renovation with new dormers, brick façade, and landscaped exterior.