Home addition
Find a solution to your lack of space. No matter the type of extension you're planning, count on us to find the right general contractor from our network counting over 2 400 360º Verified Contractors.
We give you a hand, from start to finish
Planning and design
Drawing up plans with the help of an architect, technologist, engineer, or interior designer, as required · Electrical load calculation · Surveying · Feasibility study
Choice of materials
Product selection · Floor and wall coverings · Doors and windows · Bathroom · Laundry room · Kitchen · Bedroom · Home theater · Eco-friendly construction
Preparation and demolition
Temporary relocation · Site preparation · Demolition of old structures · Modifications to load-bearing walls
Construction
Turning a crawl space into a basement · Kitchen relocation · Adding a solarium · Extension · Second-story addition · Garage · Intergenerational home
Plumbing, electrical, heating, and air conditioning
Complete systems installation · Piping · Heating and air conditioning · Electrical panel
Finishing touches
Painting · Floor, wall, and ceiling coverings · Installation of fittings and fixtures · Post-work clean-up
And the final step? Enjoy your new home extension!
Which areas do we cover?
We are present in several regions in Quebec and Ontario.
Greater Montreal and surrounding areas · Greater Quebec City · Greater Ottawa · Eastern Townships · Laurentians · Mauricie · Outaouais.
Why choose us for your home extension project
Practical advice
Our team ensures that your project gets off to a good start. Quotes, first appointments, project plans: We make your life easier by helping you navigate these crucial steps.More time for you
From a simple sink replacement to building your dream house, we know what to do to ensure your project goes smoothly. There’s nothing easier than relying on our expertise to lighten your workload!Access to 360º Verified Contractors
When you choose a member of your network for your renovation project, you can rest assured that you're dealing with someone reliable, qualified and honest.Results that reflect your vision
Our experienced team ensures that your budget is respected, your project plan is well-managed, and your vision is understood. All to impress your guests at your next dinner party!
Plus, RenoAssistance will never invoice you for its support services!
Discover the unique value we bringWe've got the right contractor for your renovations
137 000 customers have placed their trust in us
Our 360º Verified Contractors have successfully completed several projects in Blainville, Boucherville, Brossard, Laval, Levis, Longueuil, Montreal, Ottawa, Quebec City, Repentigny, Saint-Jérôme, Terrebonne, and elsewhere in Quebec and Ontario.
Looking for ways to bring your project to life?
Get inspired by these latest projects.
The cost of a building an addition to a house
The price of a residential home extension ranges from $60,000 to $240,000, depending on the complexity of your project.
To help you plan your budget, here are some factors to consider:
Type of extension
Room dimensions
Choice of materials and finishes
Scope of work (demolition, changes to the support structure, etc.)
You can also choose how you will carry out your project.
Hire a team of specialists:
You'll need several tradespeople (technologist, architect, etc.) as well as a general contractor specialized in home extensions.
Opt for a turnkey service:
Our contractors and your RenoAssistance advisor can provide you with a turnkey service covering all stages of the project, from initial design to completion. Turnkey billing covers the time of the various professionals involved and can also include materials. This allows you to benefit from the contractor's economies of scale.
*These prices are for information purposes only.
Struggling to plan your budget?
Good news! We can help you set your priorities, refine your vision, and calculate a realistic cost for the work.
Find tips, tricks, and inspiration for your project
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Looking for another service?
Masonry
New build · Home addition: Bricks · Stones · Blocks | Renovation · Restauration: Rejointing · Cracks · Water infiltration · Efflorescence · Bulging brick · Heritage buildings
Roof
Installation: Asphalt shingles · Elastomeric shingles · TPO membrane · Flat roof · Sheet metal · Roof structure | Repair · Water infiltration · Insulation · Ventilation | Conversion: New floor · Rooftop
Windows and doors
Installation · Complete replacement: Patio door · Double-pane · Thermos · Energy-efficient window · Aluminum · PVC · Wood · Hybrid | Construction: Window to be sealed · Adding a window opening
Garage
New build: Detached or attached garage · Concrete · Wood frame | Home addition: Second storey · Garage conversion · Mezzanine | Renovation: Flat roof · Electric vehicle charging station · Heating
Sunroom
Custom build · Conversion · Home addition: 3- or 4-season · Veranda · Solarium · Doors and windows | Turnkey service: Architect · Technologist · Interior design
Basement
Turnkey renovation · Major damage | Addition · Conversion: Apartment · Bedroom · Separate entrance · Intergenerational home · Bathroom | Foundation: Insulation · Infiltration
Take your project to the next step
Chat with an advisor
Do you have any questions about our service? A member of our team will be happy to help.
Contact us
Fill out our online form
Ready to kick off your project? Answer a few short questions to get things started.
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