For more than three decades, Lanthier Construction has been a trusted name in Quebec’s construction landscape. Founded by Gilles Lanthier, the company built its reputation on collaborative leadership, agility, and lasting partnerships. From its earliest projects to today’s large-scale developments, Lanthier continues to embody the same values of rigor, respect, and partnership that have shaped its culture — a culture reflected in the loyalty of many clients who have trusted the company for 10, 20, and even 30 years.
Since 2018, a new generation of leadership has been steering the company into a dynamic era of growth and innovation. Guided by Co-Presidents Annie Lanthier and Martin Nuckle, Ing., Lanthier Construction thrives as a modern, strategically driven organization rooted in family values.
Together, this leadership team carries forward the company’s founding principles while positioning it for the future, combining the authenticity of a family business with the vision and agility of a forward-looking builder.
Over time, Lanthier Construction has become a leader in the commercial, industrial, pharmaceutical, and corporate sectors. The company’s ability to manage both large-scale new builds and detailed interior redevelopments has made it a preferred partner for clients seeking technical excellence paired with a human touch. Its guiding vision remains clear: to combine precision, innovation, and collaboration in every project it undertakes.
The company’s rebranding several years ago marked an important turning point. The shift from Construction Gilles Lanthier to Lanthier Construction symbolized both continuity and reinvention—an evolution from a traditional family business to a modern organization equipped to meet complex industry challenges. “The rebrand reflected a broader mission that embraced innovation, sustainability, and a forward-looking strategic vision,” says Lanthier. “It was about honoring where we came from, while preparing for where we’re going.”
That forward-thinking approach has been key to Lanthier’s continued success. Whether constructing new industrial facilities or redeveloping intricate corporate spaces, the firm has distinguished itself by balancing technical precision with creative problem-solving. “We stand out through deep technical mastery, proactive collaboration, and exceptional adaptability,” Lanthier explains. “Our ability to navigate different regulatory, technical, and design contexts with precision is one of our greatest strengths.”
This versatility is especially evident in sectors that demand exacting standards, such as the industrial and pharmaceutical fields. For these, Lanthier manages projects that require specialized mechanical systems, clean rooms, and sophisticated production logistics. Meanwhile, in commercial and corporate environments, the focus is on creating spaces that are functional, sustainable, and aesthetically refined.
Among Lanthier Construction’s many achievements, one project in particular stands out. The redevelopment of Fondaction’s 50,000-square-foot building showcased the company’s ability to manage highly technical mandates while delivering outstanding design and functionality. This complete redevelopment involved a full envelope refurbishment, the installation of a new elevator, architectural staircases, and a structurally reinforced rooftop terrace — all executed within a tight schedule that demanded exceptional planning, coordination, and precision. Throughout the process, Lanthier’s teams applied continuous value engineering, optimizing construction solutions to align design intent, performance goals, and budget requirements.
“Fondaction is a project that perfectly embodies our approach,” says Annie Lanthier. “It reflects our ability to balance architectural ambition with technical excellence, while maintaining rigor, adaptability, and close collaboration with our partners.” The result is a sustainable and inspiring workplace that captures both the client’s vision and Lanthier Construction’s dedication to excellence.
Behind every project, a committed team
At the heart of Lanthier Construction’s success is a team of passionate professionals who share a common commitment to excellence. Estimators, project managers, superintendents, coordinators, and administrative experts work hand in hand to deliver projects that meet the highest standards of quality and collaboration.
Among them, Mathieu Gosselin, ing., Construction Director, and Sonia Pelletier, BAA, Director of Financial and Administrative Services, exemplify the company’s spirit of dedication and professionalism. Their complementary expertise — one grounded in technical precision, the other in organizational and financial stewardship — strengthens the cohesion and performance of a multidisciplinary team that reflects Lanthier’s culture of loyalty, trust, and mutual respect. With an average tenure of ten years, this experienced group anticipates challenges, finds creative solutions, and maintains a proactive approach from design to delivery.
More than colleagues, they form a cohesive team driven by shared values and purpose: one that embodies the rigor, collaboration, and integrity at the core of Lanthier Construction’s success.
Innovation also plays a crucial role in Lanthier Construction’s success. The company continually refines its processes, adopting digital collaboration tools that enhance coordination and accuracy, especially for complex industrial and pharmaceutical projects. Prefabrication and sequenced construction methods are also integrated to reduce schedules and improve quality.
Safety, a cornerstone of every construction operation, is treated at Lanthier with the same rigor as design and execution. Working in heavily regulated sectors requires constant vigilance and discipline. “Maintaining high health and safety standards is a constant challenge,” says Lanthier. “We address it through a deep-rooted prevention culture, ongoing training, and structured communication. Every team member plays an active role in ensuring safe worksites.”
As a multi-generational family business, Lanthier Construction draws strength from its continuity and values. “Being a family business brings a long-term vision and authentic culture,” Lanthier says. “Our principles of rigor, respect, and passion guide every decision and strengthen our relationships with clients and partners.” This culture of integrity has created a foundation for lasting success and repeat business across Quebec’s construction markets.
Sustainability has also become central to the company’s philosophy. Lanthier integrates environmental responsibility throughout every project, from material selection to energy system design. “We prioritize responsible material choices, waste reduction, and the integration of high-performance systems,” Lanthier notes. “Our goal is to deliver efficient, healthy, and environmentally conscious spaces that meet modern standards.”
The company’s adaptability and collaborative spirit were tested recently on an industrial project that revealed unforeseen structural issues during construction. Rather than delay progress, the Lanthier team, engineers, and the client quickly designed a safe technical solution. The experience reaffirmed the firm’s belief in flexibility and communication as essential tools for success.
Looking ahead, Lanthier Construction sees opportunity in Quebec’s evolving commercial and institutional markets. “There’s a growing focus on modernizing existing spaces, integrating smart technologies, and achieving higher environmental performance,” Lanthier explains. To stay ahead, the company is investing in digital project management tools and expanding its technical expertise to meet rising expectations.
After more than 30 years, Lanthier Construction continues to exemplify the qualities that built its reputation: precision, professionalism, and partnership. It has grown from a respected local builder into a trusted leader capable of delivering complex, high-performance projects across multiple sectors. Yet at its core, the company remains deeply human, driven by family values, respect for its craft, and an unwavering commitment to client success.
“Our team is our greatest asset,” says Lanthier. “Across all our projects, whether interior redevelopments or new builds, we bring the same rigor, creativity, and passion. That’s what makes Lanthier Construction a trusted partner for complex and ambitious projects.”
For more information, visit www.lanthier.ca
