About

Driven by Results 

Your trusted partner for building success.

Today, PBS Building Supplies is a proud fourth-generation, family-owned business serving contractors, builders, developers, and homeowners since 1990. Our reputation is built on decades of hands-on experience, a reliable team that delivers on every promise, and a deep understanding of the products and people that keep projects moving. We know our clients and we know drywall.

Our founder, Giovanni Prospero, built PBS on a simple principle: help customers get the job done right, on time, and on budget. That commitment to service and integrity continues to drive us today.

As a member of Castle Building Centres Group Ltd., Canada's leading buying group, we stay independent while gaining access to leading vendors, programs, and competitive pricing across the industry. As a 100% Canadian-owned and operated company, we take pride in supporting our local professionals and communities.

We stock trusted brands like Georgia-Pacific, CertainTeed, CGC, Bailey Metal, Johns Manville, Owens Corning, Roxul, Circle Brand, and many more. Together, we bring innovative products and solutions designed to save you time, streamline the building process, and integrate leading-edge innovations that help you work smarter on every job. Whether you’re a seasoned pro or a hands-on homeowner, PBS Building Supplies is your one-stop shop to help you build with confidence.