EXPERTISE
Designing open, light-filled spaces within Montreal’s architectural heritage.

EXPERTISE
Designing open, light-filled spaces within Montreal’s architectural heritage.
Structural modification
Do you dream of a living space that breathes, flooded with natural light? This is often why structural modifications are considered. This could mean enlarging an existing window or installing a large patio door to open your interior to the outdoors, or adding an extension.
Perhaps your needs are changing and your current staircase no longer meets your expectations. Modifying, moving, or even creating a new staircase becomes essential, especially when converting a duplex into a single-family home to streamline traffic flow.
Are you short on space? Whether it’s a horizontal extension or adding a level (vertical extension) to your plex or condo’s rooftop, to enjoy a breathtaking view, we can help. Or perhaps you’d like to install a spa on your deck, which requires a reinforced structure.

Espé
your Structural modification service
Safe and Compliant Structural Modification
We design tailored solutions in collaboration with professional engineers to guarantee the durability of your home, whether for an extension or a structural modification.
Professional Engineers
We team up with certified engineers to validate calculations and protect the structural integrity of your home.
Custom Reinforcement
We determine the best reinforcement approach and exact support points required to safely carry new loads.
Strict Standards
We ensure meticulous project coordination to comply fully with all applicable Building Code requirements.
Lasting Value
We deliver a thoughtful transformation executed with attention to detail to enhance and respect your property.
The Espé Advantage: Uncompromising structural modifications engineered for long-term safety, durability, and peace of mind.



Espé
your Structural modification service
Your structural modification project: Design, execution, and full management
We offer a centralized approach that streamlines the entire process, giving you complete peace of mind from start to finish.
Centralized Approach
We act as your single point of contact to coordinate every technical step seamlessly, with no unnecessary intermediaries.
Design & Engineering
We collaborate closely with professional engineers to guarantee rigorous, safe, and precise planning.
Expertise Since 2002
We leverage over two decades of general contracting experience to master every structural intricacy.
Related Work Management
We manage all peripheral work and finishing touches to deliver a fully completed, spotless site.
The Espé Advantage: Comprehensive end-to-end management, from engineering to final finishes, for smooth and lasting execution.
Learn more about our Structural Modification service in Montreal
Do you have questions? That’s normal. We answer them here.
What is meant by "structural modification"?
Structural modification refers to any intervention that affects the load-bearing elements of a building (walls, floors, beams, columns).
Why is it essential to call on an engineer?
Any structural modification must be planned and supervised by a structural engineer. Their expertise is essential to ensure the stability of the building, ensure compliance with the Building Code, and prevent any risk of collapse or long-term damage.
Do I need a permit to make structural modifications?
Yes. Generally, structural alterations are considered major work and require a permit from the City. This permit must be supported by detailed plans and calculations signed by a structural engineer.


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Here you can find an overview of what we do. More than just a showcase of our accomplishments, we offer these projects as inspiration: see them as a range of concrete possibilities to imagine what we could create together for you.
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Tell us about your project
Every project is a story. A meeting between your vision and our expertise. In Montreal and the surrounding area, we bring to life renovations that combine aesthetics, functionality, and durability.