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House Extension Services in Montreal
Running out of space in your home? A house extension is the perfect way to increase living area, enhance comfort, and boost your property’s value — without the cost and stress of moving. At Tross Construction, we provide custom-designed, fully engineered house extensions across Montreal, built to match your lifestyle, budget, and architectural style.
Whether you need additional bedrooms, a larger kitchen, a second floor, or more functional living space, our team delivers extensions that look seamless and feel like a natural part of your home.
Add More Space with Professional Home Extensions
A well-planned extension not only expands your home but also improves layout, lighting, and long-term property value. We handle every stage of the process — from design to permits to finishing — ensuring high-quality results.
Rear Extensions
Perfect for expanding your:
Kitchen
Living room
Dining area
Family room
Rear extensions are popular because they create open-concept spaces and improve natural lighting.
Side Extensions
Ideal for homes with unused side yards. Great for building:
Mudrooms
Laundry rooms
Storage areas
Extra bathrooms
Side extensions improve functionality without altering your main floor layout.
Second-Floor Additions
If your family has outgrown your space, adding a second storey is the best way to significantly increase square footage. We build:
Bedrooms
Bathrooms
Master suites
Offices
Living areas
All structural work is engineered for safety and stability.
Sunrooms & Enclosed Balconies
Extend your living space with a bright and relaxing sunroom. These spaces offer:
Four-season comfort
Natural light
Extra space for lounging, reading, or dining
Why Move? Extend with Ease and Stay Where You Love.
Benefits of Home Extensions
A professionally constructed extension offers long-term value and convenience.
- More Living Space
Create the extra room your family needs without the hassle of relocating. - Increased Property Value
Extensions are one of the highest-ROI home improvements in Montreal’s real estate market. - Customised Design
The layout, materials, and finishes are entirely tailored to your taste. - Better Functionality
Improve storage, open your layout, or add new dedicated rooms. - Seamless Integration with Your Home
We match your home’s existing materials and architectural style for a unified appearance.
Our House Extension Process
1. Initial Consultation
We begin by understanding your goals, needs, and preferred design style. Our team evaluates your space and provides tailored recommendations.
2. Planning & Architectural Design
We collaborate with architects and engineers to:
Draft detailed construction plans
Check zoning and municipal regulations
Prepare for building permits
Determine structural requirements
You receive clear drawings and a complete extension plan.
3. Permit Handling
Most extensions in Montreal require permits. We manage all application steps to ensure compliance with local regulations.
4. Construction & Structural Work
Once approvals are ready, we begin building your extension:
Excavation (if required)
Foundation work
Framing
Roofing and exterior finishing
Electrical and plumbing
Insulation and interior finishing
All construction is supervised by certified professionals.
5. Finishing & Quality Control
We complete the project with interior finishes, painting, flooring, and a full inspection to guarantee quality.
Why Choose Tross Construction for Home Extensions?
Complete Turnkey Project Management
From design to final finishing, we manage every step of the extension process.
Skilled & Licensed Builders
Our team has years of experience building safe, compliant extensions in Montreal.
High-Quality Materials
We use durable materials that match or enhance the look of your existing home.
Transparent Communication
You receive updates at every stage of construction.
Seamless Architectural Matching
We ensure your extension blends perfectly with your home’s structure and style.
Reliable & On-Schedule Delivery
We follow strict timelines while maintaining exceptional workmanship.
Popular Extension Ideas for Montreal Homes
Open-Concept Kitchen Expansion
Create a larger kitchen with more counter space, storage, and natural light.
Master Bedroom Suite
Add a spacious bedroom with a walk-in closet and private bathroom.
Home Office Extension
Create a quiet, dedicated workspace — perfect for remote work.
In-Law Suite / Rental Unit
Increase income by adding a separate living space.
Bigger Living Room or Dining Area
Enhance comfort and improve hosting opportunities.
Frequently Asked Questions
Yes. Most extensions require municipal permits. We handle the entire process for you.
Depending on complexity, most extensions take 8–20 weeks.
Absolutely. We match architectural style, colours, materials, and roofing.
Yes — extensions consistently provide high ROI and improve market appeal.
Yes. We specialise in designing and building extensions for tight or restricted spaces.
Start Your House Extension Project Today
When you need extra space, a professionally built extension is the perfect solution. At Tross Construction, we deliver custom extensions designed for comfort, beauty, and long-term durability.
Contact us for a free consultation
Serving Montreal and surrounding regions
Strength you can see. Quality you can trust.
Licence RBQ #5841923501
Tross Construction Inc. is a company specializing in interior and exterior renovation projects, masonry, concrete and everything related to finishing work.
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