Un sous-sol bien aménagé, c’est plus qu’un espace supplémentaire. C’est une 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 et 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 (#5784-5462-01) 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 moderne au Vieux-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
✉️ [email protected]
🌐 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 in the form and tell us about your project
We transform your space on budget and on time
Enjoy your new comfort and invite everyone to your home!
Over 10 years' experience at your service.
Cartago Construction did an exceptional job on my renovation. Their expertise and professionalism were impressive. The team was friendly and the customer service was excellent. I highly recommend them to anyone looking for quality construction services. Thank you, Cartago Construction!
Cartago Construction completed an exceptional renovation for my home in Beloeil. Their knowledgeable team and attention to detail made the process stress-free. I highly recommend their construction and renovation services. Thank you Cartago Construction for a job well done!
Cartago Construction was incredible! Their team completed an exceptional renovation of my home. Their professionalism and attention to detail was impressive. I highly recommend their services to anyone looking for quality construction work. Thank you very much, Cartago Construction!
I'm extremely satisfied with the work done on my kitchen renovation. From the outset, they listened to my needs and proposed solutions adapted to my budget and tastes. The work was carried out with great attention to detail and on schedule, which is very rare in this field. The end result exceeds my expectations: a modern, functional and beautiful kitchen! The team also left the premises spotless at the end of the work. I highly recommend them to anyone looking for a competent and reliable professional for their renovation projects. Thanks again for this exceptional service!
I'm absolutely delighted with the work Cartago Construction did on my basement renovation. From the initial consultation to the completion of the project, their professionalism and expertise were outstanding. The team was punctual, efficient and exceeded all my expectations in terms of quality and deadlines. They were able to transform my underground space into a beautiful and functional area. I highly recommend Cartago Construction to anyone looking for quality renovation services. Thanks again for an outstanding job!
Very competent and with excellent workmanship and finish, prompt and courteous response. Highly recommend.
I highly recommend Cartago Construction to anyone looking for high-quality renovation services. Their dedication to customer satisfaction and attention to detail make them an exceptional choice for any renovation project.
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.
