Home Extension Contractor in Montreal:
From Architectural Design to Full Project Execution.
Local Expertise and Stamped Plans: Your Home Extension, Fully Managed from Start to Finish.
Your Home Extension Project: Local Expertise Serving Your Vision
With over 25 years of experience in home extension projects across Montreal, we bring our technical expertise to your most ambitious ideas.
Whether it’s a second-storey addition, a four-season extension, a shoebox expansion, a side extension, or a pile-supported addition, our team understands every nuance of Montreal’s most sought-after neighborhoods.
We believe a successful project starts with thorough planning. That’s why we carefully assess the feasibility of every concept based on zoning regulations, setback requirements, and site-specific constraints unique to your area.
To ensure flawless execution, we bring together a multidisciplinary team of experienced professionals under one roof, including partner architects who are members of the OAQ, engineers, technologists, and surveyors. From permit applications to construction management, we oversee every step, turning technical complexity into a seamless and lasting result.
- Architecture, volumetry, location, permit application
- Autocad plans, realistic 3D, quote and budget
- Professional services in collaboration with engineers, surveyors, architects, landscape designers, and architectural technologists.
- Project management and renovation
- Guarantee of on-time delivery and execution
- Reliable after-sales service
Sales over 81 million dollars
Over 726 projects completed
We have been serving our clients for over 25 years
A team of over 55 partner members
Our Major Renovations and Home Extensions in Montreal
Browse our portfolio of home extensions and major renovations, all delivered turnkey by our team.
Home Extension Solutions Tailored to Your Lifestyle
Beyond the structure, a successful project must reflect your evolving lifestyle while respecting the zoning and site constraints specific to your property. As a home extension contractor, our role is to turn your vision into functional, thoughtfully designed spaces. Whether your goal is to improve your work-from-home setup, accommodate a growing family, or enhance a heritage property, we create tailored solutions that integrate seamlessly into Montreal’s most sought-after neighborhoods.
Whether your property is located in Plateau Mont-Royal, Rosemont, Villeray, or in Ahuntsic (home to our showroom) and Outremont, our team has a strong command of local bylaws and setback requirements, allowing us to design spaces that blend seamlessly with the character of your neighborhood:
- Home office : Designed for today’s remote work reality, we create soundproof and ergonomic workspaces that provide a clear separation between professional and personal life.
- Family living spaces : Whether welcoming a new child or creating more privacy, we design additional bedrooms or full suites with bathrooms, maximizing comfort for every member of the household.
- Heritage optimization (shoebox extensions or plex transformations) : We specialize in transforming classic Montreal properties, from adding a full second storey to converting duplexes into high-end single-family homes, while ensuring full architectural compliance.
- Garage and multi-purpose spaces :Whether protecting your vehicles from Quebec’s climate or creating a functional workshop, we build flexible structures that add lasting value to your property.
The RÉNO M3 Difference:
A No-Compromise Approach to Your Home Extension
| Traditional Process | RÉNO M3 | |
|---|---|---|
| Design & Architectural Plans | The client is typically responsible for finding and coordinating an independent architect. | Design and Architectural Plans by Architects and Technologists, All Under One Roof |
| Feasibility Study & Permit Applications | The administrative and legal responsibilities fall on the client, including permit applications, follow-ups with the borough, and zoning compliance. | We take full responsibility for your project, from feasibility analysis through to final permit approval. |
| Seamless Coordination Between Design and Construction | The contractor only becomes involved once the plans are completed, increasing the risk of technical discrepancies between the drawings and the actual construction. | A full team including engineers and surveyors involved from day one, ensuring no information is lost between design and construction. |
| Construction Management | Intermittent oversight, with the client often acting as the intermediary between trades. | Construction managed directly by RÉNO M3 |
| Comprehensive Guarantees | Limited and divided between each professional involved. | Comprehensive warranty covering the entire project, with centralized after-sales service.* Subject to RÉNO M3’s warranty policy* |
The 5 Steps For an Expansion Project Tailored to your Needs
The architects we collaborate with are involved from the very beginning of your home extension project. By combining your vision, the constraints of your environment, and your lifestyle, they develop optimized home layouts designed to maximize natural light, create a seamless flow between spaces, and enhance the overall ergonomics of daily living.
Unlike the traditional process where execution is disconnected from the original vision, the RÉNO M3 team takes ownership of every detail in the architectural plans, from complex structural elements to exterior finishes, custom millwork, plumbing, and electrical. This continuity ensures that what is built on site reflects the original concept with precision. A fully aligned process before construction even begins.
Our partners also create realistic 3D plans, giving you a clear and tangible preview of your home extension. This collaborative approach allows us to deliver tailored solutions that meet the highest standards of quality in Montreal’s major renovation industry.
From this architectural foundation, we orchestrate every stage of construction. Our interior design team develops functional concepts that enhance the volumes defined by the home extension architect.
With our advanced project management expertise, we execute your home extension plans, whether for a single-family home, a shoebox, or a plex, in full compliance with the strictest construction standards and your borough’s regulations.
01
Preliminary analysis
Our partner architect specializing in home extensions begins by understanding the client’s needs, goals, and constraints. They perform a detailed analysis of the house extension project, evaluating the requirements in terms of space, functionality, and style. This step helps define a clear vision for the project and establish the objectives to be achieved.
02
Design
Based on the information gathered during the preliminary analysis phase, the architect partner develops concepts and ideas for the project design. They create plans, sketches, and models to visually represent the proposed design. This stage involves discussions and adjustments in collaboration with the client to achieve a final design.
03
The documentation and budget
Once the concept is finalized, the consulting architect proceeds to create detailed documents and drawings to describe the technical specifications of the expansion project. These documents include plans, sections, elevations, and details, as well as material and construction specifications. These documents are essential for the construction permit application and for RÉNO M3 to carry out the construction project. Additionally, it is at this stage that we will evaluate budgets.
04
Project Planning
Planning and Orders : Once the creative solution is defined and the materials are chosen, the planning stage begins. This involves developing detailed plans for the project, placing orders with suppliers, and creating a GANTT project schedule for seamless project management.
05
Project management on the construction site
Project management on the construction site is a crucial step in the realization of a renovation project. It involves strict adherence to the established schedule, ensuring that the work is completed within the agreed-upon timeframe. Furthermore, a respectful team on the site plays an essential role in creating a harmonious and professional work environment, thus facilitating effective collaboration and a successful project.
What our client say about us
56 reviews: 4.6/5
Great team of professional people on all levels. Listens to the needs of clients and their budgets. Accompanies the client in their project from start to finish and even beyond. With 2 projects with them, they have gained our trust and we recommend them without hesitation!
Remi R
Professional work from the best in the business. Their work is always impeccable!
Marie-Michele Tanguay
Finally, a renovation company you can trust! We extended our house to accommodate a bedroom and bathroom for our disabled little boy. The RénoM3 team succeeded in developing a design that was both functional (according to the standards for people with reduced mobility) and beautiful looking! We highly recommend them.
Amelie Desaulniers
41 reviews: 98% recommended
We recently completed a renovation and expansion of our kitchen over the past few months. We had been dreaming of this project for a long time! The service, design, and professionals were beyond our expectations! We have no hesitation in recommending the Reno M3 team!
Sylvie Flanagan
RÉNO M3 guaranties for the extension of your home in Montréal
At RÉNO M3, we guarantee results that meet your expectations thanks to our commitment to quality execution. Our company is renowned for its reliability, with a team of conscientious professionals who oversee every step of your project. You can trust our commitment to excellence and be assured of reliable and quality service when contracting RÉNO M3 for a house extension.
Turnkey house extension
With RÉNO M3, you benefit from a turnkey service, freeing you from any worries and tasks to take care of. Our team takes care of all stages of the project management, from planning to final completion. You can rest assured knowing that we take care of all the details, from coordinating the work to supervising the craftsmen.
An expansion project delivered on schedule as promised
Our commitment to our customers is to deliver their project within the agreed upon timeframe. We understand the importance of this project to you, which is why we have implemented an efficient and reliable logistics system to ensure a flawless delivery. From order placement to final installation, our team is committed to meeting the agreed upon deadlines, in order to provide you with an exceptional customer experience and complete satisfaction.
After sales service
We are aware that customer service plays a crucial role in your overall satisfaction as a client. That is why we are committed to providing you with an exceptional experience and exceeding your expectations. We want you to be fully satisfied with your house extension. We understand that your time is valuable, which is why we strive to provide you with fast and efficient service. Our team will do everything possible to resolve any issues you may have promptly so that you can fully enjoy our products or services.
FAQS
You are considering enjoying many more years in your cozy home, but the need for space is becoming increasingly apparent. Expanding your home seems like the ideal solution. There are many methods to achieve this goal. Our construction and renovation experts will be your guides, helping you bring your ideas to life and offering solutions to address your lack of space.
Our team, composed of trained and experienced professionals in space design, excels at bringing your ideas to life. After gathering all the essential information to understand your needs and objectives, we will materialize your house extension concepts by visualizing them. The 2D and 3D designs will offer you a clear perspective on the direction your project will take. You will have the opportunity to refine it at any time before entering the construction phase.
Absolutely, all the projects featured on our website have been designed and executed 100% by our team at RÉNO M3. You can also browse through our portfolio of house expansions. Additionally, if you would like to visit an ongoing construction site or see a completed project, we would be happy to make arrangements to accommodate you.
What sets RÉNO M3 apart from other high-end house extension renovation contractors is our commitment to quality, attention to detail, and customer satisfaction. We pride ourselves on providing exceptional service and delivering projects that exceed our clients’ expectations. Our expertise, design sensibility, and technical competence enable us to create beautiful and functional interior spaces. Moreover, our experience in managing high-end projects allows us to meet deadlines and budgets while ensuring flawless execution.
We have a dedicated approach to sustainable construction in our house extension projects in Montreal. We prioritize the use of environmentally friendly materials, such as local and sustainable products, in order to reduce our carbon footprint. Additionally, we strive to optimize energy efficiency by installing high-efficiency heating and cooling appliances and systems. We also encourage our clients to choose sustainable solutions, such as installing double-glazed windows with low-emissivity (Low-E) coating and argon filling, which enhance thermal insulation. Similarly, we offer low-flow plumbing systems that help reduce water consumption. By incorporating these sustainable practices, we aim to promote a healthy environment and minimize the environmental impact of our house extension projects in Montreal.
Each borough, including Villeray, the Plateau, and Outremont, has its own regulations regarding setbacks and lot coverage. Our team systematically assesses the feasibility of your home expansion project based on these specific requirements to assist you in obtaining your building permits.
Each Montreal neighborhood has its own architectural identity and zoning requirements. Whether it’s respecting setback rules for a shoebox extension, converting a duplex into a high-end single-family home, or adding a storey to a heritage building, our local expertise is your strongest asset.
We understand the technical and administrative specifics of each borough, ensuring your home extension blends seamlessly with the character of your neighborhood while remaining fully compliant.
Absolutely. We specialize in transforming classic Montreal properties, including shoebox extensions and high-end single-family homes, while preserving the architectural character of the neighborhood.
