de Blois Built is a boutique, family-run general contracting firm based in Trent Hills, Ontario. We specialize in custom home builds, renovations, and additions — taking on a carefully chosen number of projects each year so that every one gets our full attention. Since 2009, we’ve built our reputation project by project, client by client, across Northumberland County, Prince Edward County, Hastings County, Bay of Quinte, Peterborough, the Kawarthas, and even Toronto and the GTA.
We only work with trusted trade partners who are committed to the highest quality. Our rigorous in-house quality control ensures that every detail meets or exceeds the highest industry standards. Our custom tools and digital systems, and our collaborative approach to communication means that the realization of your on-paper vision is executed with precision and care when we bring it into physical reality.
Whether you're planning a renovation or a new build, a simple project or a complex one, we are committed to delivering exceptional service at all phases of a project. Our service is always client-centred, personalized, and collaborative.
We build and maintain meaningful relationships and collaborations with our clients, trades & industry partners. Real connection means communicating with curiosity, openness and integrity. As a de Blois Built client, our relationship with you goes beyond the transactional, allowing us to exceed your expectations at every stage.
Established in 2009 by husband and wife team Mike & Roisin de Blois, de Blois Built is founded on a passion for exceptional craftsmanship and the belief that clients’ projects deserve professionalism, quality and excellent service, no matter how big or small the project.
What began with Mike’s deep trade expertise and understanding of construction and sequencing as an experienced Red Seal Carpenter, and Roisin’s sharp operational instincts, has evolved into a client-focused, team-based operation with a network of trusted trades & suppliers, a loyal client base and a strong portfolio of projects we stand behind.
Mike draws inspiration from the creative aspects of building and his skillset is driven by a love of quality craftsmanship and good design. Mike’s passion for connecting with others is at the root of de Blois Built’s core values. He is committed to creating a positive and healthy workplace culture, which extends beyond the team to his relationships with clients and industry peers.
A creative problem solver and the imaginative force behind de Blois Built, Roisin’s leadership is inspired by our values framework of connection and curiosity. She has a nurturing influence, fostering growth through mindful mentorship and her vision of thriving teams supported by innovative and progressive systems and resources.
The de Blois Built team are expert communicators and project managers with strong client relationships built on a transparent and budget conscious approach to estimating alongside effective coordination of highly skilled subtrades and material suppliers.
Careful site supervision ensures quality control and efficiency on the job. Behind the scenes, our admin team guides the planning, direction and administration of de Blois Built’s financial systems, client services standards, health & safety management tools, human resources, and operating systems development.
We’re not a volume builder. We deliberately limit our project load to ensure every client receives the care and attention they deserve.
de Blois Built clients understand that their projects deserve experience-based expertise and a deep understanding of construction sequencing from a contractor they can trust. These are the key components of our service:
Before you make a commitment to us, you need to know that we are the right builder for you. Our typical client journey follows these four stages.
We start by having an honest conversation about your needs and our services. Clear feasibility and laying a strong foundation for a collaborative partnership by exploring options, expectations and project goals.
Defining your scope through design collaboration, budget development, trades & materials coordination and scheduling.
Bringing your vision to life with skilled execution, continually tracking on-site progress against set targets.
Closing the gaps and protecting your investment.
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.
If you’re planning a renovation, addition, or custom build in Northumberland County or the surrounding region, we’d love to connect. Get in touch to schedule a complimentary consultation.
Our clients are at the heart of everything we do. Here’s what a few of them have to say about their experience working with de Blois Built.
Posted on Google 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 Google 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 Google 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 Google 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 Google 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 Google 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 Google 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 Google 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 Google 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.