Let's Design Your Dream Home

Your One-stop Shop for High-End Building Supplies.

Kitchen Design

Enhancing the kitchen achieves a healthier environment for the people using it.

Readmore Icon

Flooring & Tiling

The right floor makes the difference.

Readmore Icon

Building Materials

Mortars, epoxies, industrial flooring, PVC, thermal insulation, plaster, and more.

Readmore Icon

We Tackle The Most Challenging Designs

We are Kingston's only high-end building supply store where you can find all of your project needs in one convenient location.

Get Free Estimate
Intro Image

What People Think
About Cornerstone

Sheila Gordon

Kingston, ON

My experience with Cornerstone Building Supplies was excellent.
Thanks Tom...all boxes checked...style, quality, value and made in Canada.

Colin Snider

Kingston, ON

Very professional showroom!
All the products are so impressive - customer service was great too.

Lisa Clairton

Napanee, Ontario

Danielle was extremely helpfull and patient, every step of the process our dream home.

Recent Blogs

Get updates about our latest trends and techniques used in
interior design project works.

Schedule a Free Consultation Today

Contact Us & Get a Free Consultation

Schedule NOW