How to Quote a Service Job With Unknown Material Costs

List the material assumptions, supplier quote date, and whether transport or price changes affect the final amount. Give the customer options where different materials change cost or durability. Do not present an unconfirmed estimate as a fixed final price.

Separate confirmed materials from allowances and state how a final cost will be determined, such as supplier confirmation or an agreed quantity. Where practical, obtain a current supplier quote before sending yours and explain how long it remains valid. Agree whether the customer or you approves substitutions. Keep receipts and reconcile actual costs transparently instead of charging an unexplained amount above the allowance.

Separate an allowance from a final charge and reconcile it against receipts before invoicing the balance.

Mark uncertain supplier costs as allowances and state how they will be reconciled. Set a maximum or require approval above a threshold. If the price changes before purchase, send the new amount and wait for acceptance.

Set a date to confirm the material cost and get approval before purchase. KobStore can explain your quoting process; create your service page and set expectations before a client requests work.