KB Mechanical is a Canadian-based mechanical contractor delivering new construction across commercial, healthcare, education, and community sectors — from mixed-use apartment buildings and senior centres through to hospitals, schools, and native community centres. 

With over a decade in operation and a full project pipeline year-round, they run a busy, multi-project operation where financial accuracy and system reliability aren't optional.

KB Mechanical had been using a different integration platform to connect Procore and QuickBooks — and it wasn't working. Recurring errors went unresolved for months. A critical incident where a resync pushed labour costs all the way back to February, doubling entries across the board, was the final straw.

The platform also had a fundamental limitation for Canadian construction: it could only handle one tax code at a time. For KB Mechanical — operating across GST-only, GST-plus-PST, and fully exempt scenarios — this was unworkable. PST had to be entered manually on every invoice. Budgets in Procore and P&L reports in QuickBooks were constantly diverging, with no quick way to find out why.

"We were at a point where we were going to give up using Procore," says Project Manager Joshua Bonnell. "It wasn't Procore's fault — the issue was with the integration."

Having previously been burned by broken promises, KB Mechanical had confidence in Interfy as a viable alternative because they clearly explained how they could meet each of the contractor’s requirements.

Complex Canadian tax handling, custom workflow requirements, reliable syncing between Procore and QuickBooks — Interfy addressed each one directly, committed to building what was required, and delivered.

The integration now handles all three tax scenarios automatically. "We explained to Interfy: ‘here's what we need, we realise it's very complicated’. And now it just works," says Joshua.

The OneCore dashboard gives the team precise visibility and control over errors — categorised by type, filterable by week or month, and drillable to the exact invoice or purchase order causing a problem. Issues can be opened directly in Procore, corrected, and resynced in seconds. Recurring patterns can be traced to their source and addressed through retraining rather than repeated manual fixes.