We specialize in creating stunning custom homes and renovations that blend craftsmanship, innovation, and timeless design. Founded in 2009, our mission has always been to offer homeowners in Ontario exceptional building experiences, transforming their ideas into reality. With a commitment to quality, attention to detail, and transparent communication, we’ve built a reputation for excellence that we’re proud of.
What started as a passion for home construction has become one of Ontario’s most trusted names in custom renovations. Our founder, Mike de Blois, set out to provide a higher standard of service, a philosophy that continues to guide us today. Together, our team is proud of the homes we’ve built and the lasting relationships we’ve formed.

"What started as a passion for building homes has evolved into a legacy of craftsmanship and trust."
Our mission is to craft custom homes and renovations that reflect our clients' unique visions. We are committed to delivering high-quality craftsmanship and personalized service, ensuring every project exceeds expectations. Our goal is to create beautiful, functional spaces that stand the test of time.
Our vision is to be a trusted leader in custom home building and renovations in Ontario. We aim to create homes that enhance the lives of our clients and contribute to the communities we serve, all while embracing sustainable practices and innovative design solutions.
At de Blois Built, we value integrity, quality, collaboration, innovation, and sustainability. We believe in delivering superior craftsmanship, fostering strong client relationships, and embracing eco-friendly practices to create lasting, impactful homes.
We believe that the best results come from understanding our clients’ unique needs and vision. Here’s why homeowners trust us with their most important projects:
Our approach to every project is designed to ensure a smooth, transparent process. We guide you through every step, from the initial consultation to the final inspection, providing clarity and keeping you informed throughout. Here’s what you can expect when working with us:
We begin by understanding your needs, budget, and design preferences.
our team collaborates with you to create a design that fits your vision and lifestyle.
With our skilled team, we bring the design to life with careful planning, precision.
We conduct a detailed final inspection to ensure everything.
We are a team of experienced professionals united by our commitment to excellence. Our builders tackle challenges, our designers create functional beauty, and our communicators keep you informed. Together, we deliver high-quality projects that de Blois Built is known for.
Mike, a Red Seal carpenter, co-founded de Blois Built in 2009 with his wife, Roisin. He leads the team with a focus on quality craftsmanship and design, promoting a positive, collaborative culture. Known for his leadership and problem-solving skills, Mike ensures every project runs smoothly. He lives in Trent Hills with Roisin and their five children, enjoying sports, live music, and travel.
Roisin, the creative leader behind de Blois Built, co-founded the business in 2009 and joined full-time in 2021. With a background in social work and 30 years in healthcare, she fosters growth through mentorship and innovation. Originally from Ireland, Roisin now lives in Trent Hills with her husband and five children, enjoying cooking, live music, and travel.
Heather joined de Blois Built in late 2022 with a diverse background in communications, film, and regulatory compliance. With a Master’s in Communications, she creates systems that streamline workflow and simplify complex ideas. Outside of work, Heather enjoys biking, camping, gardening, and volunteering with her family in Warkworth.
If you’re ready to start your own project, we’d love to help you bring your vision to life. Contact us today to schedule a consultation and let’s discuss how we can build something extraordinary together.
Our clients are at the heart of everything we do. The positive feedback we receive is a testament to our dedication to delivering exceptional results. Here’s what some of our satisfied clients have to say:
Posted on Rick DeanTrustindex verifies that the original source of the review is Google. As a subcontractor we have had the privilege to work alongside de Blois Built, and they are an excellent team. Their professionalism, communication and attention to detail really stand out. The collaboration on their projects is strong, and the quality of the finished product speaks for itself. We look forward to many more collaborations in the future and highly recommend de Blois Built.Posted on James HunterTrustindex verifies that the original source of the review is Google. Mike and team are incredible. Very high end finishing touches and solid work all round. They did our entire ground floor on time and on budget. Don't hesitate.Posted on Carl SpitzerTrustindex verifies that the original source of the review is Google. Mike de Blois brought our designs to life and created a beautiful home for us. He and the team have an attention to detail that is impressive. Our full house renovation in mid town Toronto is now complete and we are very pleased.Posted on cristina popTrustindex verifies that the original source of the review is Google. Michael is very skilled as a general contractor and has an honest, responsible character. Going through a renovation always has its stressful or overwhelming moments. You want to be in those moments with someone you trust is doing their best, and whose best assures a standard of excellence. This is Michael and his team. Throughout the building of our home, he and his team were wonderful to us as well as our neighbours. They took great care in the price quotations to ensure we scale the project to something we can afford. They matched their quote during post-Covid times, when prices were fluctuating and the market was difficult to predict. They worked with quality materials and did a great job aesthetically as well as functionally in our home. I cannot recommend this team enough. All the best in your renovation.Posted on Chris CurryTrustindex verifies that the original source of the review is Google. Mike and the entire de Blois Built (“DBB”) Team were our contractor for an extensive full house renovation in Toronto that was completed in July 2024. Like any large and complex construction project it is all about the “Team”. DBB was nothing short of excellent throughout the years leading up to construction start, all the way until completion and thereafter. Their collaborative approach with Architects, Designers, Subtrades, etc., is what truly differentiates them from the crowd as they repeatedly came to the table with effective solutions to any issue that may have arisen. More importantly though, Mike and his team would proactively suggest design or cost-effective alternatives for consideration throughout the life of the project that in hindsight, now living in our house for a year, was true game changer on how small suggestions has produced big benefits and flow for our family’s needs. I would be more than happy to recommend Mike & DBB services to anyone considering a major (or minor) renovation or new build. Regards. Chris CurryPosted on Sarah HendersonTrustindex verifies that the original source of the review is Google. Mike and his de Blois Built team’s skill, craft, attention to detail and design, as well as a solutions based approach not only brought our architect’s plans to life, but also made the experience of renovating our home an enjoyable one. Not to mention, Mike delivers on his promises, is always adding value and is an absolute pleasure to deal with. In fact, his whole team is a pleasure and it’s clear that they enjoy what they do. Thank you Mike and team for all your ideas, attention and hard work. We love our house!!! Sarah & Griff H. Hibou HousePosted on Chris WalcottTrustindex verifies that the original source of the review is Google. We share this experience from a different perspective than a client, and we were and are very pleased working with de Blois. We are a subcontractor for plumbing mechanical AC irrigation installs and service. We have been in business for over 60 years and worked with many different contractors, those that truly care for their product and provide a great work culture are few and far between. De Blois definitely joins this club of selective contractors.Posted on Christine McNicolTrustindex verifies that the original source of the review is Google. We couldn't be more pleased with our experience working with Mike and his team. First in 2015 to underpin and renovate our basement. Then in 2021 for a complete renovation and extension on the rest of our home. On both projects, from start to finish, the communication was absolutely incredible, keeping us informed every step of the way. The workmanship was excellent, showcasing the skill and dedication they put into every detail. When it came to budgeting and costs, everything was transparent, with no surprises—just honest, clear information. Mike himself is a standout guy—his attention to detail, kindness, and work ethic are unmatched. He listened to our needs, was attentive to every aspect of the project, and made sure everything was completed on time. We highly recommend Mike and de Blois Built for any project!Posted on SKONA Design IncTrustindex verifies that the original source of the review is Google. We are pleased to have formed a great working relationship with de Blois Built and have partnered with them on many projects. Their team is hard working, professional, knowledgeable and take each project very seriously. They also support charities, so they’re a builder with a big heart. We highly recommend de Blois Built and look forward to working with them in the future.