Quoting guides
Materials Estimation Mastery: Never Under-Quote Again
A repeatable method for quantities, waste, price changes and the time around materials.
An accurate material allowance begins with quantity, but it also includes waste, delivery, handling and the risk that the quoted supplier price changes before the order is placed.
Measure in the unit you buy
Translate site measurements into packs, lengths, sheets or units rather than stopping at area or volume. Round according to how the supplier sells the product.
Keep the measurement logic with the quote so it can be checked when the scope changes.
Use a reasoned waste factor
Waste depends on the material, pattern, access and complexity. Use a standard starting point, then change it when the job conditions justify doing so.
Record why the allowance changed. This improves the estimate and gives the team useful ordering context.
Price the handling around the product
Delivery, unloading, storage, protection and returns all use time or money. Include them where they are material to the job.
Check supplier validity dates and set expectations if a delayed acceptance could require repricing.
This article provides general business information, not accounting, tax or legal advice. Check current requirements with the relevant authority or a qualified adviser.