Pre-drywall and pre-board are often used interchangeably, and in practice they describe the same inspection point: after rough-in and insulation are complete, before drywall is hung. Some builders use 'pre-board' (the trade term for drywall) and others use 'pre-drywall' — the inspection is the same.
The value proposition is straightforward. Once drywall is installed, the entire mechanical, electrical, and structural rough-in disappears behind paint. Any deficiency discovered after that point — a missing fire-block, an undersized return air duct, a vapour barrier gap at the rim joist, a kinked plumbing supply — requires opening the wall to address. Pre-drywall is the last opportunity to verify what will be permanent.
A proper pre-drywall inspection in Calgary takes 3 to 5 hours on a typical detached home. The inspector walks every level, photographs systems room by room, and documents framing, plumbing, electrical, HVAC, insulation, and vapour barrier. Air-sealing details get particular attention because they drive long-term comfort, energy cost, and moisture performance — and they're nearly impossible to retrofit once the home is finished.
For Calgary buyers, pre-drywall inspections are particularly valuable on higher-end builds where you have more invested and more to lose, on builds by smaller or newer builders without an established quality reputation, and on any build where the buyer can't be on site frequently to observe construction. The cost (typically $500 to $750) is small relative to the home value and the cost of post-occupancy remediation.
The report is delivered to the buyer the same day or the next day, structured for direct sharing with the builder. Most items found at pre-drywall are addressed by the builder before drywall installation as a matter of normal trade coordination — the inspection simply ensures nothing is missed.
