1. Itemise, do not quote one figure
A single total invites the customer to compare only on price and makes every subsequent change a renegotiation. Itemised — material by material, with freight and any service on their own lines — a change in quantity or a switch of brand adjusts one line and the conversation stays short. It also makes you look like a business rather than a counter, which matters when a contractor is comparing three quotes.
2. Validity, because your rate will move
In steel, cement and anything metal-linked, the rate you quote today is not the rate next week. A validity period on the quotation means the price is honoured until the date on it and no longer, which reads as professional rather than difficult. It also ends the conversation where a customer returns after a month expecting a rate that has since risen — a conversation that otherwise costs you either money or the relationship.
3. Say what is included and what is not
Most disputes after a quotation are about scope rather than price. State whether delivery is included and to where, whether loading and unloading are yours, what the payment terms are, and what happens if the quantity changes. Four lines of terms on the document prevent four arguments later, and none of them are difficult to write once.
4. Convert it without re-typing
When the order comes, the quotation should become the invoice rather than being keyed again from a photograph. Re-entry is where a dropped line or a wrong quantity gets in, and it is entirely avoidable. Keeping the link between the two also means that months later you can see which quotation produced which order, which is what makes the next point possible.
5. Follow up on open quotes
Most shops quote and wait. Keeping quotations in a list with their status turns that into a task — call the ones older than a fortnight and ask. A large share of business is lost not to a competitor but to nothing happening, and the shop that calls back usually finds the customer simply had not decided. Over a few months this also tells you what proportion of your quoting actually converts, which is a number almost nobody has.
6. Staged supply from one quote
Material for a site rarely goes out in one load. One quotation can produce several bills over weeks, each linked back to it, so you can see what has been supplied against what was quoted and what remains. For a contractor working to a schedule, being able to answer that in ten seconds is worth more than the rate difference he was negotiating.