Do you own an old house on Saint-Charles Street West in Old Longueuil? You're not alone in wondering where to start with your renovation project.
This historic thoroughfare is home to some of the South Shore's finest heritage properties. But it also presents unique challenges that few contractors truly understand. Some 40 % of the homes in the area are over 100 years old, and many rest on unstable clay soil typical of the region.
In 2025, the Quebec Renovation Program (PRQ) allocated $2 million specifically for Longueuil, with 60 files already processed on Saint-Charles Street. The waiting list continues to grow. Why is it so? Because these homes require complex interventions that go far beyond a simple paint job.
At Cartago Construction, we've been working regularly in this sector for 10 years. We know the pitfalls, the surprises and, above all, the solutions that really work.
Here's what you need to know before you start your project.
Understanding the unique context of Saint-Charles Street West
Rue Saint-Charles Ouest is unlike any other street in Longueuil. It's the heart of Vieux-Longueuil, an area where history can be read in every façade.
The houses here are often centuries old, built using traditional methods that don't always meet today's standards. You'll find many wooden frames, fieldstone foundations and mechanical systems that date back to another era.
The area is also designated as a heritage zone by the Ville de Longueuil. This means that certain renovations require special approvals, even for work that would seem straightforward elsewhere.
Why pre-1950 homes pose special challenges
Houses built before 1950 have their charm, it's true. But they come with their own set of complications.
First of all, solid wood framing. It's solid, but often uninsulated and difficult to modernize without redoing everything. Load-bearing walls aren't always where you think they are, making it difficult to open up spaces.
Then there's asbestos. In houses of this era, it's found in floor coverings, around pipes, sometimes even in plasterwork. It requires certified decontamination before you touch anything.
Finally, plumbing and electricity are rarely up to today's standards. Galvanized cast-iron pipes clog up, and 60-amp electrical panels are no longer sufficient for our modern needs.
South Shore clay soil: a key factor
Clay soil is the number one problem on rue Saint-Charles Ouest. And it's something many homeowners underestimate.
The marine clay present in this part of Longueuil contracts when it's dry and swells when it rains. This constant movement creates progressive subsidence that cracks foundations.
According to Ville de Longueuil data, this western section of Saint-Charles Street is particularly hard hit. We're talking about houses that move a few millimeters every year. It doesn't sound like much, but after 50 or 100 years, the damage accumulates.
The signs? Doors that suddenly jam, sloping floors, stepped cracks in the exterior brickwork. If you're seeing this, your house is talking to you.
Rising material costs and impact on projects
In 2025, material prices will continue to rise, albeit at a slower pace. Year-on-year inflation in building materials in Quebec was 0.9 %.
But some items are more affected than others. Exterior cladding climbed by 7.4 %, directly affecting projects to restore heritage facades.
For a typical project on Saint-Charles Street, this can mean 5,000 $ to 10,000 $ more than expected. That's why we always recommend including a safety margin of 15 to 25 % in your initial budget.
Challenge #1: Foundation cracking and subsidence
Cracked foundations are probably the most common and costly challenge on Saint-Charles Street West. It's also the one that scares homeowners the most.
The good news? There are proven solutions. The bad news? They're not cheap, and we need to act before things get worse.
We've worked on several cracked houses in the area. Each time, it's the same scenario: the owners have waited too long, thinking it was just cosmetic.
How to recognize the signs of a cracked house
Before you panic, learn to read the real signs of a foundation problem. Not all cracks are serious.
Horizontal or stepped cracks in foundation walls? These are serious. Doors and windows that no longer close properly? This indicates structural displacement. A floor that's visibly leaning to one side? Your house is sagging.
Other less obvious clues: ceramic tiles that crack for no reason, a basement that smells damp even in dry weather, or gaps that appear between mouldings and walls.
If you see several of these signs together, it's time to have your foundation professionally assessed. Not next year. Now.
Which solutions really work?
There are two main approaches to stabilizing a sagging foundation: piles and resin injection. The choice depends on the extent of the problem and your budget.
Neither solution is bad. But they don't apply to the same situations.
Pile stabilization (mandatory for homes >50 years old from September 2025)
Piles are the permanent solution for major subsidence. Steel or concrete piles are driven into stable ground, sometimes to a depth of 3 or 4 metres.
This is a major operation requiring specialized equipment. You have to excavate around the foundation, install the piles, then reattach the existing structure.
In September 2025, new standards from the Régie du bâtiment du Québec (RBQ) will make it compulsory to install piles for any house over 50 years old showing signs of subsidence. These regulations are specifically aimed at clay soil zones like Longueuil.
How much does it cost? Expect to pay between 15,000 $ and 35,000 $, depending on the number of piles required. It's a major investment, but one that protects your most important asset.
Resin injection for sealing without demolition
Polyurethane resin injection is a less invasive solution for mild to moderate subsidence. An expanding resin is injected under the foundation, which then solidifies and slightly lifts the structure.
It's faster, cheaper (8,000 $ to 20,000 $), and doesn't require major excavation. On the other hand, it's not a long-term solution for severe problems.
This approach is recommended for recent cracks or small localized settlements. For very old houses with several affected areas, piles remain the best option.
Available costs and subsidies (PRQ Longueuil)
Let's talk money, because it's often what holds owners back.
The Quebec Renovation Program (PRQ) can cover up to 50 % of eligible costs for foundation stabilization work. In 2025-2026, Longueuil received an envelope of $2 million specifically for this type of project.
What are the criteria? Your home must be over 10 years old, and the work must correct health or safety problems. Cracked foundations that cause water infiltration or structural hazards are eligible.
Find out if your home qualifies - Get a free evaluation
The process takes time (3 to 6 months for approval), but it's well worth it. On a 25,000 $ project, you could receive up to 12,500 $ in financial assistance.
Challenge #2: Municipal permits and heritage constraints
Renovation permits in Longueuil are a complex process. On rue Saint-Charles Ouest, in the heritage sector, it's even more complex.
We're not telling you this to discourage you. We're telling you so that you can plan accordingly. Because many projects fall behind schedule because of poorly prepared permits.
The Ville de Longueuil is strict about modifications to heritage buildings. And rightly so - it's what preserves the neighborhood's cachet.
Why permits take up to 6 months in some cases
In Old Longueuil, some renovation permits can take between 4 and 6 months to be approved. That's a long time, but there are reasons for it.
Your application must first go through the urban planning department. If your home is in a designated heritage zone, it will then be examined by the town planning advisory committee. This committee meets once a month.
Then, if your work involves the structure (load-bearing walls, foundations, roof), you'll need plans signed by an engineer. The city takes the time to check everything to make sure it complies with the Quebec Construction Code and municipal bylaws.
Projects that alter the exterior appearance (new windows, change of siding, addition of a balcony) are closely scrutinized. The committee wants to make sure that it fits in with the architectural style of the area.
Our advice? Submit your permit application as soon as your plans are ready, even if you don't expect to start work for a few months yet.
Which renovations require an engineer?
Not every project requires a structural engineer, but many do. And on older homes, it's often mandatory.
Anything that affects a load-bearing wall - opening it, modifying it, removing a beam - requires the advice of an engineer. The same goes for foundation modifications or adding a storey.
Houses built before 1950 have structures that are not always documented. We don't always know where loads pass through, which walls are load-bearing, or whether existing beams can support additional weight.
An engineer will assess the structure, make load calculations, and draw up compliant plans. It costs between 2,000 $ and 5,000 $ depending on complexity, but it avoids disasters.
The RBQ also requires an engineer for certain foundation work. If you're installing piles or redoing a footing, you have no choice.
Mistakes that lead to permit refusals
We've seen many permit applications turned down for avoidable reasons. Here are the most common.
Incomplete plans or plans that don't comply with the Building Code. The city doesn't guess what you want to do - it needs detailed plans with dimensions, materials and cross-sections.
Exterior modifications that don't respect heritage character. Want to install white PVC windows on a red-brick Victorian? They'll be turned down. You need windows that respect the original proportions and style.
Work already started without a permit. If you demolish before getting your permit, the City can order you to stop the work and even fine you. We've seen projects stalled for months because of this.
MYTHS TO DEBUNK :
Myth #1: «I can do the work myself, no permit needed.» Reality: Even if you do the work yourself, you'll need a permit for major modifications. And some work (electrical, plumbing, gas) must be done by certified contractors.
Myth #2: «Rebuilding from scratch costs less than renovating.» Reality: On Saint-Charles Street, demolishing a heritage home to build a new one often costs more AND you lose eligibility for QRP subsidies. Not to mention the fact that the city can refuse demolition.
Challenge #3: Moisture, insulation and thermal bridges in old houses
Moisture is the silent enemy of old houses. It sets in gradually, and by the time you notice it, the damage is often already extensive.
The houses on rue Saint-Charles were built at a time when people didn't think of insulation and airtightness the way they do today. The walls breathe, but they also let in cold air and moisture.
Renovating these homes without understanding how they manage humidity risks creating more problems than it solves.
Why century-old houses accumulate humidity
Older houses have no vapour barrier in the walls. Moisture generated indoors (kitchen, bathroom, (e.g., breathing) migrates through the walls and escapes naturally to the outside.
The problem comes when you renovate without taking this phenomenon into account. If you add modern insulation with a vapour barrier on the wrong side, you trap moisture in the walls. The result: mold, wood rot and odors.
Basements are particularly vulnerable. Unsealed stone or concrete foundations let in soil moisture. Without a functioning French drain or adequate ventilation system, your basement remains permanently damp.
Quebec winters exacerbate the problem. Freeze-thaw cycles cause water to penetrate cracks, which then freezes and widens those same cracks. It's a vicious circle.
How to improve energy efficiency without creating problems
Improving the energy efficiency of an old house is possible. But it has to be done intelligently.
First, we assess the existing structure. Where are the thermal bridges (places where heat escapes)? Can the walls be insulated from the inside, or do they need to be insulated from the outside?
For wood-frame walls, a vapour retarder is often preferred to a full vapour barrier. This allows moisture to escape slowly, while limiting heat loss.
Windows account for 25 to 30 % of heat loss in a home. Replacing old single-glazed windows with Energy Star models can reduce your heating costs by 15 to 20 % per year.
Attic insulation is the project with the best return on investment. Going from R-20 to R-50 costs between 3,000 $ and 6,000 $, but you'll recoup this investment in energy savings in 5 to 7 years.
According to recent data, improving a home's energy efficiency can increase its market value by 4 to 6 %. It's not just a question of comfort, it's also a profitable investment.
Modernize without distorting the heritage style
That's where it gets tricky. How do you improve comfort without losing the cachet that makes your home so valuable?
Start by identifying the heritage features you want to preserve: original moldings, woodwork, solid wood staircases, paneled doors, stained-glass windows. These elements tell the story of your home.
For windows, there are now models that reproduce the look of period windows while offering modern thermal performance. You can keep the original frames and install custom-made double glazing.
Hardwood floors can be sanded and refinished instead of replaced. Even a floor that appears to be in poor condition can often be saved by an experienced professional.
When it comes to plumbing and electricity, you can modernize systems by running new installations through existing spaces (basements, attics, closets) without knocking out all the walls.
The key is to work with a contractor who understands older homes. Not someone who wants to rip everything out and start from scratch.
Challenge #4: Site access and logistics in the heart of Old Longueuil
Logistics are rarely mentioned when planning a renovation. But on Saint-Charles Street West, it's a real headache.
The streets are narrow, lined with parked cars. Houses stand close together. Delivering materials or bringing in machinery becomes an exercise in precision.
We've learned to manage these constraints, but you have to anticipate them from the outset.
How to plan a renovation without disturbing the neighbourhood
Respecting your neighbors isn't just a matter of being polite. It's also a question of permits and municipal by-laws.
In Longueuil, noisy work is permitted on weekdays from 7 a.m. to 7 p.m., and on Saturdays from 9 a.m. to 5 p.m.. Not on Sundays or public holidays. If you exceed these hours, you risk a complaint and a fine.
For material deliveries, we coordinate with the city to obtain a temporary parking permit. This avoids blocking the street for hours and receiving parking tickets.
Dumpsters must be placed on your property or with a permit to occupy the public domain. Keep them as short as possible and fill them efficiently.
For major work (demolition, excavation), give neighbors a few days' notice. A simple notice in the letterbox explaining the nature and duration of the work can save a lot of frustration.
Cartago solutions for dense-area logistics
At Cartago Construction, we have developed specific strategies for working in Vieux-Longueuil.
Material deliveries are scheduled to arrive just in time, not weeks in advance. This reduces congestion and avoids stockpiling materials that could be damaged.
For projects requiring heavy equipment (mini-excavator for foundations, gondola for roof), we rent the equipment for the exact duration needed. We arrive early in the morning, get the job done, and clear the street the same day if possible.
Stress-free site planning - Talk to a Cartago expert
We also keep the site clean and organized. Neighbors tolerate work better when they see it's well managed and not left to deteriorate.
We've been working on the South Shore, We've never had a major complaint from a neighbor. It's something we're proud of.
Challenge #5: Realistic budgeting and contingencies in old houses
Let's face it: renovating an old house almost always costs more than you'd expect. Not because the contractors are dishonest, but because these houses hide surprises.
You can't tell what's behind a wall until you open it. You can't guess the state of the plumbing until you test the system. The unexpected is part of the process.
The key is to anticipate them, and build some leeway into your budget.
Why projects often exceed 15 to 25 % of the initial budget
In a new house, everything is visible and predictable. In a house that's 80 or 100 years old, you discover things along the way.
Asbestos is the first culprit. As soon as it's found (and it often is), you have to call in a certified company for decontamination. This can add 3,000 $ to 8,000 $, depending on the extent.
Galvanized plumbing is another classic. It looks functional until you open a wall and discover it's rusted from the inside out. Redoing a house's entire plumbing system can cost from 8,000 $ to 15,000 $.
Non-conforming electricity is almost always a problem. 60- or 100-amp panels are no longer sufficient. We need to upgrade to 200 amps, redo the copper wiring and add GFCI outlets in wet rooms. Budget: 5,000 $ to 12,000 $.
Then there are the structural problems you discover once the finishing touches have been removed. A rotten beam, a sagging floor, a cracked joist. Each correction adds time and money.
That's why we always recommend adding 20 % to the estimated budget. If you don't need it, great. But if the unexpected happens, you won't be caught unprepared.
How to avoid regrets and maximize your return on investment
A well-planned renovation can increase the value of your home by 10 to 20 %. But you have to make the right choices.
Prioritize work that affects the structure and essential systems: foundations, roofing, insulation, mechanical systems. These are the elements that protect your investment in the long term.
Aesthetic renovations (kitchen, bathroom) have a better return on investment when the structure is sound. Nobody wants to buy a house with a new kitchen if the foundation is cracked.
QRP-eligible projects offer a particularly attractive ROI. With financial assistance of 50 %, your return on investment can rise by an additional 5 to 10 %.
Also keep in mind the value of the neighborhood. In Vieux-Longueuil, near Parc Saint-Mark and Collège Français, well-renovated homes sell quickly and at good prices.
Cartago method: full inspection and transparent cost scenario
At Cartago Construction, we never give you a quote without doing a thorough inspection of your home.
We start by assessing the general condition: foundations, structure, mechanical systems, exterior envelope. We identify existing problems and those that may arise during the course of the work.
Next, you're presented with two scenarios: the base scenario (what you want to do) and the scenario with probable contingencies (what we might discover). This helps you prepare financially.
Each expense item is detailed: materials, labor, permits, project management, contingency margin. No mysterious lump sum. You know exactly where your money is going.
Get a complete pre-bid inspection - No charge, no obligation
If something unexpected comes up during the course of the work, we stop, explain the situation, present you with the options, and wait for your approval before continuing. Zero surprises.
How Cartago Construction is managing the challenges on Saint-Charles Street West
Renovating a heritage home isn't like building a new condo. It requires experience, patience and a real understanding of older buildings.
At Cartago Construction, we've developed a specific approach for homes in Vieux-Longueuil. An approach that respects the historic character while providing modern comforts.
Yassine Troudi, our founder, has been working in Quebec residential construction for over 10 years. He's seen it all, from collapsed foundations to hidden surprises in the walls.
Our process: inspection → plan → permit → execution → guarantee
We never embark on a project without doing our homework. Our process is structured to avoid problems.
Step 1: Pre-renovation inspection We assess your home from cellar to attic. We identify visible problems and look for red flags. We take photos, make measurements and test systems.
Step 2: Detailed plan and transparent submission We develop a complete work plan with a realistic schedule. The bid details every item. You know exactly what we're going to do and how much it's going to cost.
Step 3: Permit management We take care of preparing permit applications, coordinating with engineers if necessary, and following the process with the city. You don't have to deal with the paperwork.
Stage 4: Professional execution We stick to the schedule, keep the site clean and communicate regularly. If anything unexpected comes up, we let you know immediately.
Step 5: Warranty and follow-up All our work is guaranteed. We follow up after the project is completed to make sure everything is running smoothly.
Our expertise in heritage homes
Heritage homes are our specialty. We know how to preserve original features while making them functional for modern living.
We work with specialized subcontractors who understand these buildings. Our plumber knows how to adapt modern systems to old structures. Our electrician knows the standards for older buildings.
We also meet the requirements of the City of Longueuil for buildings in heritage zones. We know which materials are acceptable, which changes require special approval, and how to submit a file to speed up the process.
Our RBQ certification and comprehensive insurance cover you. If something goes wrong (it rarely happens, but it does), you're covered.
Case study: stabilizing a cracked house on Saint-Charles Ouest
Last year, we worked on a century-old house near Parc Saint-Mark. A magnificent brick property, but with worrying cracks in the foundations.
Diagnosis: subsidence due to clay soil, aggravated by clogged French drains saturating the soil around the foundations.
Our three-phase solution:
- Installation of 8 steel piles under collapsed sections
- Complete replacement of the perimeter drainage system
- Foundation repair and waterproofing
Results after 6 months:
- No new motion detected
- Subsoil humidity reduced by 80 %
- Property value increased by 18 % according to the following municipal assessment
- 45 % financed by the PRQ
The total cost was 42,000 $, but with the PRQ grant, the owner paid 23,100 $ out of pocket. For a house now worth 85,000 $ more than before.
That's what a good investment is all about.
FAQ - Renovations on Saint-Charles Street West
What is the average cost of repairing a cracked house on rue Saint-Charles?
It all depends on the extent of the damage and the solution chosen.
For resin-injected stabilization with crack repair, you should expect to pay between 8,000 $ and 20,000 $. This is the least invasive solution for mild to moderate problems.
For complete pile stabilization with drainage and waterproofing, the cost ranges from 25,000 $ to 50,000 $. Sounds high, but it's a permanent solution that protects your investment for the next 50 years.
With the QRP, you can recover up to 50 % of these costs if your project qualifies. On a 30,000 $ project, that's 15,000 $ of direct assistance.
What renovations require a heritage permit in Old Longueuil?
Any modification visible from the outside generally requires approval in the heritage district.
This includes: changing exterior siding, replacing windows or doors, adding or modifying a balcony, changing paint color (yes, even that), installing wall-mounted air conditioning visible from the street.
Inside, structural modifications (removing a load-bearing wall, modifying the main staircase, adding a storey) require standard permits but not heritage approval.
To be sure, contact the Longueuil urban planning department before you start. It's free and will save you trouble.
How do I know if my foundation needs to be stabilized?
There are many signs that it's time to act.
Staircase cracks in exterior brick are a clear signal. If they're more than 6 mm wide and widen over time, it's urgent.
Doors and windows that suddenly jam, especially if several do so at the same time, indicate structural movement.
A visibly sloping floor - you can test this with a ball or level. If the slope exceeds 1 cm per meter, there's a problem.
Water pooling against the foundation after rain or in the spring is also a clue. This means that the drainage system is no longer working and that the soil is putting pressure on your walls.
If in doubt, have your foundation assessed by a specialized contractor or engineer. At Cartago, this initial assessment is free of charge.
Do PRQ grants cover resin injection and piles?
Yes, both solutions are eligible for the Québec Renovation Program.
The QRP considers foundation stabilization to be health and safety work. As long as the work corrects a problem that affects the solidity or health of the house, it's covered.
Resin injection and pile installation fall into this category. Perimeter drainage and waterproofing work, which often accompany these projects, are also eligible.
On the other hand, purely aesthetic work (repairing rendering after the work has been completed, redoing landscaping) is not covered. You'll need to separate the items in your bid.
The maximum amount of assistance varies according to your family income, but can be as much as 50 % of eligible costs, up to a maximum subsidy of 50,000 $.
How long does a complete renovation on Saint-Charles Street last?
It depends on the scope of the work and the permit process.
For standard interior renovation (kitchen, bathroom, finishes) without affecting the structure: 6 to 10 weeks once permits have been obtained.
For a project including foundation work, insulation and interior renovation: 4 to 6 months from start to finish.
For major renovation and expansion or major structural modification: 8 to 12 months, including time for permits.
The factor that most often lengthens lead times is obtaining permits. In the heritage sector, allow 3 to 6 months for approvals if your project involves the exterior.
Our advice: start the permit process in autumn or winter so you can start work in spring. Contractors are also less busy in autumn, so you get better lead times.
Are piles really mandatory in 2025 for old houses?
Not automatically compulsory, but mandatory in certain situations from September 2025.
Under new RBQ standards, if your home is over 50 years old AND shows measurable signs of subsidence, you'll need to install piles if you're doing major renovations that require a permit.
This means that if you're just renovating your kitchen without touching the structure, you don't have to. But if you're doing an extension, a storey addition, or major work on the foundation, piles become mandatory if the inspection reveals subsidence.
This is a safety measure for unstable ground areas like Longueuil. The aim is to prevent homeowners from investing in costly renovations on foundations that continue to move.
The good news? This work is eligible for the QRP, which considerably reduces your bill.
Why choose Cartago Construction for your work on Saint-Charles Street?
We could tell you that we're the best, that we do superior work, that we offer unparalleled service. But all contractors use these words.
So let's tell you what really sets us apart.
We're a small company that works with people, not with file numbers. When you call Cartago, it's Yassine or a member of his team who answers. Not a receptionist taking messages.
We know old houses. Not just in theory - we've had our hands in them for 10 years. We've seen every possible surprise and we know how to deal with them.
Expertise in older homes and rigorous RBQ standards
Our RBQ (Régie du bâtiment du Québec) certification allows us to manage all aspects of your project under a single general contractor's license.
This means that we are legally responsible for the quality of the work, even that done by our subcontractors. You have a single point of contact, a single guarantee, a single responsibility.
We work exclusively with certified and insured subcontractors: C-licensed electricians, certified plumbers, accredited asbestos decontamination specialists.
Every project follows the Quebec Construction Code to the letter. We don't take shortcuts, even when no one's looking. It's not just about compliance - it's about safety and sustainability.
Our experience with heritage homes in Vieux-Longueuil has taught us to anticipate problems before they become costly. We know where to look for hidden defects, recognize the warning signs and propose preventive solutions.
A human, transparent and local approach
We live on the South Shore. We know the streets, the neighborhoods, the local peculiarities. We understand what it means to renovate your home in this area.
Our approach is simple: we treat you as we would like to be treated. That means honest communication, clear explanations, no technical jargon to confuse you.
We explain the options, the pros and cons of each solution, and let you decide. It's your home, your money, your project. Our role is to guide you with our expertise, not impose our choices.
We also respect your home while we're working on it. Clean site, protection of floors and furniture, daily cleaning. We work in your home - that's the least we can do for you.
Discover how Cartago can transform your home - Free consultation
Warranty, insurance and certified subcontractors
All our work is covered by our general contractor's warranty. For structural work, you also benefit from the mandatory RBQ warranty.
We maintain a $2 million liability insurance policy that covers all our projects. If an accident does happen (it never has, but we're prepared), you and your property are protected.
Our subcontractors all have their own insurance and licenses. We never work with anyone who's not up to code. This is non-negotiable.
This comprehensive protection gives you peace of mind. You can rest easy knowing that your project is in good hands.
Take action - Get your free evaluation
Your home on rue Saint-Charles Ouest has a history. It has stood the test of decades, generations and Quebec winters.
It deserves to be renovated with the respect and expertise that its heritage demands.
Whether you're noticing worrisome cracks, planning a major renovation, or just want to know where to start, we can help.
First step: free, no-obligation evaluation
We always start with a free visit to your property. Yassine or a member of his team comes to your home, assesses the situation and answers your questions.
This first meeting lasts about an hour. We inspect critical elements (foundations, structure, systems), identify potential problems and discuss your objectives.
You leave with a clear idea of what needs to be done, in what order, and a rough budget estimate. All at no cost, no pressure, no obligation.
Second stage: detailed submission in 24-48 hours
If you decide to go ahead, we'll prepare a complete and detailed quotation.
We present it to you in person or by videoconference. We take the time to explain each item, answer all your questions, and show you exactly where your money is going.
We'll also help you identify available subsidies (PRQ, Rénoclimat, etc.) and guide you through the application process if you wish.
Step 3: Site visit and planning
Once you've accepted the quote, we'll work together to schedule the work.
We adapt to your constraints: if you're living in the house during the renovations, we organize the work to minimize inconvenience. If you have to leave temporarily, we optimize the schedule to reduce the duration.
We also handle permits, city coordination and mandatory inspections. All you have to do is choose your finishes and leave the work to us.
Get your free inspection - The first step to a strong, healthy home
Contact Cartago Construction today
Phone : 438-932-4326
E-mail : info@cartagoconstruction.ca
Address: 2580 Rue Cartier, Longueuil, QC
Website : https://cartago-wordpress.ldqgmg.easypanel.host
We serve the entire South Shore of Montreal, with particular expertise in Old Longueuil and heritage areas.
Your Saint-Charles Street home deserves the best care. We're here to provide it.
Last update : November 2025
RBQ license : [Number to be inserted]
Liability insurance : 2 M$ in force
