Housing Industry on the GRAJ protocol. One fee. 195 countries. Join the protocol.
Building materials are bought against a schedule where being early costs storage and being late costs everything downstream. The commercial relationship is dominated by that asymmetry.
Materials must meet building codes for the jurisdiction they are installed in, evidenced by certification and test reports. An inspector rejecting a material means removal and replacement, at the supplier's cost in practice.
A delivery that misses its window idles a crew and pushes every trade behind it. Reliability is worth more than price to most contractors, and delivery performance is remembered far longer than a discount.
Construction payment is staged, with a retention held until completion and sometimes beyond. That retention is your margin, held for months, and pricing that ignores it is pricing at a loss.
Most jurisdictions give suppliers a statutory claim against the property for unpaid materials — but only with strict, early notice. The right is lost by missing a deadline nobody reminds you about.