Castle Building Centres Group is a proudly Canadian, member-owned and member-directed buying group built exclusively for independent lumber, building material, and hardware retailers. Every decision we make is guided by one simple belief: when independents thrive, communities thrive.
More than six decades later, that mission is delivered through collaboration, smarter buying, meaningful programs, industry-leading technology, and a culture rooted in trust and community.

These aren't words on a wall. They're the foundation of Castle and the reason 350+ independents chose Castle over every other banner.
Castle operates with honesty and steadfast integrity in everything we do. You can ask any question and be certain of an honest answer. Always.
No complicated fee structures. No hidden costs. Straightforward membership agreements and the lowest cost of affiliation available to independents.
Transparent governance. Audited financials shared with every member annually. What you see is exactly what you get — and what you earn.
The Castle Culture is all about Community. Our collective network cultivates strong relationships invested in the success of our members. We are a community that wins together.
Castle Building Centres Group is a proudly Canadian, member-owned buying group built exclusively for independent lumber, building material, and hardware retailers. Every decision we make is guided by one simple belief: when independents thrive, communities thrive.
Our member-focussed mission is to build relationships that create & deliver solutions to our 350+ member locations. We deliver on this promise through collaboration, smarter buying, meaningful programs, industry-leading technology, and a culture rooted in trust and community.
Castle…we build communities.
A small group of independent lumber dealers band together with a shared goal: access better buying terms without sacrificing their independence or local identity.
Castle grows beyond its founding region, attracting independent LBM retailers across Ontario and into the Maritimes — establishing the cooperative model that still defines Castle today.
As membership deepens, Castle's collective purchasing strength grows — securing the kind of vendor programs and rebates that independents could never access on their own.
Membership reaches every Canadian province. The not-for-profit structure proves its value as member rebates grow alongside the buying group's collective leverage.
Castle introduces its suite of member success programs — payment processing, employee benefits, financing partnerships — giving independent retailers the tools of a national chain.
Castle invests in industry-leading member technology, from the CastleCore portal to electronic shelf labels and digital marketing tools. The independent goes digital.
Over 350 independent retailers across Canada. Every profit, every rebate, every dollar — returned to members. The mission hasn't changed in 60 years: strengthen the independent.

Castle members are entrepreneurs, community builders, and industry leaders. From small towns to major markets, Castle locations are deeply rooted in the communities they serve — employing local teams, supporting local initiatives, and building lasting customer trust.
Read Community Stories