About Us

Opal Building Co. is a design-build company dedicated to serving London, Ontario and surrounding areas.

Who We Are

Kevin Bartman and Tyler McIlroy, co-owners of Opal, share a passion for bringing masterpiece designs to life and transforming clients’ homes.

With decades of combined expertise in residential design, construction, and project management, the Opal team is renowned for their dedication to quality and excellence in service. This commitment has earned us several awards and the trust of our clients, standing as a testament to our skill in bringing our clients’ dreams to life.

White man, Co-Owner of Opal Building Co.

Kevin Bartman


White man, Co-Owner of Opal Building Co.

Tyler McIlroy


Building With Passion Expertise Care

The Opal
Building Experience

As a design & build company, we take care of the entire process, from conceptual designs, architectural drawings, permits all the way through construction.

This approach positions us as your all-in-one solution for your project, eliminating the need for you to coordinate between designers, architects, and various tradespeople. 

We take great pride in delivering exceptional service at every stage of your project. It begins with the discovery call, during which we offer complimentary advice and ideas to shape your vision. From there, a dedicated project manager guides you through both the design and construction phases.

Our commitment to excellence extends beyond completion with our signature after-care program, featuring a dedicated after-care manager to address any post-project needs.

Our transparent pricing model offers you a clear and comprehensive breakdown of all project costs, ensuring you understand exactly where your investment goes. Additionally, our client portal grants you real-time access to detailed information on the actual costs of materials, labor, and other expenses incurred during your project.

This level of openness is designed to build trust and confidence, providing you with full visibility into your project’s financial aspects.

We integrate the latest advancements in sustainable and smart home technologies into our designs. By doing so, we ensure that your living space is equipped with solutions that lower energy costs and provide a comfortable, tech-enabled lifestyle tailored to your needs.

This fusion of sustainability and technology reflects our dedication to creating homes that are not just spaces to live, but thoughtfully designed environments for a better future.


Happy contractor and interior designer plan a renovation inside a house. They discuss the doors, matching a wood sample against a doorframe for the interior remodel. Collaboration for a property upgrade.

What We Do

Opal Building Co. specializes in whole-home renovations, additions & custom home building.

Home Renovations

We provide full home renovations and partial renovations for specific areas like kitchens, basements, and exteriors.

Home Additions

Expand your home by adding a 2nd story addition, rear addition or a detached guest home.

Design & Architecture

Our comprehensive design process makes us a one-stop solution for renovations, additions and custom homes.

Custom Homes

Our team can design & build your dream custom home, whether it's a new development, teardown & rebuild or recovery from significant damage.

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Request a Discovery Call

Our complementary discovery call will outline the most crucial parts associated with your project:

Serving London, Ontario and surrounding regions. Fill out the form or call us to get started.

Bringing Masterpiece Designs To Life