★★★★★
The project was completely finished quickly and professionally. Yassine is a reliable and trustworthy entrepreneur. I highly recommend his services for your renovation.
A well-appointed basement, is more than just an extra space. It's a living space in its own right - a place to relax, work or entertain the family. At Cartago Constructionwe help owners of Longueuil à renovate their basement to make it a warm, safe and functional place, adapted to the Quebec climate.
Based on the Cartier StreetEvery week, our teams work in sectors such as Saint-Hubert, Greenfield Park, Laflèche, Boisé du Tremblay and Vieux-Longueuil. We know the realities of homes here: older foundations, moisture problems, low ceilings - we know how to deal with them properly.
Every basement has its own potential. Whether you want to turn it into a rental housinga home officea family room or a games roomwe take care of everything:
Complete finishing of the rough basement
Improved insulation and soundproofing
Installation of moisture-resistant flooring
Creation of intergenerational housing or 3 ½-room apartments
Electrical and ventilation upgrades
Customized storage units
Each project is designed to be sustainable, beautiful and in line with the environment. Quebec Building Code.
We take care of everything, from the first call to the last moulding:
On-site assessment
We visit your Longueuil basement to assess the structural condition, insulation and layout possibilities.
Clear plan and estimate
You'll receive a detailed quote, with a precise action plan and no hidden costs.
Coordinated work
We manage demolition, plumbing, electricity, finishing - everything is planned and supervised by our team.
Finishing and cleaning
We deliver a clean, ready-to-furnish space. You'll even receive advice on maintenance and moisture prevention.
The basements of the South Shore have their own particularities: cold slabs, concrete foundations, low ceilings... We adapt each project to the reality of your home and the soil in your area.
Whether you live in a duplex in Vieux-Longueuil or a bungalow in Saint-Hubertwe propose solutions personalizeddesigned for comfort, safety and energy efficiency.
👷 Field experience - more than 10 years in residential renovation in Quebec.
🏠 Local company - located in the heart of Longueuil, close to its customers.
🧾 RBQ Certified (#5832-5671-01) and assured.
🔧 A transparent, human approach - no detours, no false delays.
💡 Lasting results - our basements are resistant to humidity and seasonal changes.
Here are a few examples of recent projects in Longueuil:
Family basement in Saint-Hubert The addition of a playroom, TV area and enclosed storage space.
Basement apartment in Laflèche creation of a 3 ½ room apartment with separate entrance.
Basement modern in Old Longueuil The addition of a waterproof floating floor and a bright office area.
Each project is delivered clean, ready to liveand complies with all municipal standards.
📍 2580 Rue Cartier, Longueuil, QC
📞 438-932-4326
✉️ info@cartagoconstruction.ca
🌐 cartagoconstruction.ca
Request your free estimate today.
We come to your Longueuil home free of charge to assess your basement and propose a solution. turnkeysustainable and in your image.
We'll get back to you as soon as possible.
Discover other ways we can help you improve your home.
Click on your zone to see how we can renovate your home.
New surroundings have never been easier
Fill out the form and tell us about your project
We transform your space while respecting your budget and the deadline
Enjoy your new comfort and invite people over to your place!
Over 10 years' experience at your service.
The project was completely finished quickly and professionally. Yassine is a reliable and trustworthy entrepreneur. I highly recommend his services for your renovation.
Cartago did an incredible job. The team finished our basement as planned: quality, service and respect for deadlines. I highly recommend Cartago for your renovation projects.
Cartago Construction offered an excellent experience from start to finish. The team demonstrated meticulous work and a clear commitment to quality. I want to highlight the exceptional contribution of Jihad and Yassine, whose punctuality and professionalism truly set the tone for the entire project. I highly recommend Cartago Construction, and I would gladly do business with them again.
I am extremely satisfied with the work done by Cartago Construction. The team is professional, punctual and very attentive to the client's needs. The work was carried out with care and within the planned deadlines. The final result exceeds my expectations: impeccable quality and flawless finishing. I highly recommend this company to anyone looking for a reliable and high-quality renovation service.
I entrusted the complete transformation of my basement to Cartago Construction, and I am truly impressed by the result! The team was able to optimize the space and create a warm, modern and functional place. Everything was done with care and professionalism, from start to finish. Thanks to Yassine and his team for their excellent work — I recommend them without hesitation!
Thank you very much for your excellent work! I am very satisfied with the result and your professionalism. Bravo to the whole team!
Thank you for your office job Yassine My home is becoming my little paradise
He renovated my house: truly an excellent finished product, daily monitoring of the project and the final result excellent quality. Truly satisfied.
Very good coordination, respect for commitments (cost, schedule), and remarkable finishing quality. I highly recommend Cartago Construction. »
Best service Best price I highly recommend
Why so many Quebecers put their trust in us:
You'll get a fast, clear and free quote from RBQ-certified experts.
With our complete renovation solutions, your space becomes exactly as you imagined it.
Whether it's a redesigned kitchen, an optimized basement or an exterior makeover, we manage it all - on time and on budget.
Local expertise. Seamless service. Peace of mind from start to finish.