Project planning · Practical advice
Quotations, estimates and changes during the work
Keep the agreed scope, price and decisions clear from the first proposal to handover.
Know what you have been given
A quotation and an estimate are not the same thing. Broadly, a quotation prices agreed work, while an estimate is an indication of likely cost. Read the wording and ask the trader to explain any uncertain items before acceptance. Consumer rights depend on the circumstances, so consult current independent guidance if a disagreement arises rather than relying on a general website example.
Make the scope identifiable
The accepted document should make it possible to tell what work is included. Keep the drawing or material schedule it refers to with it. A message saying “yes, go ahead” is less clear if several versions have been discussed. Confirm which proposal is accepted, what remains provisional and how the parties will record later changes.
Distinguish a change from an unexpected finding
Choosing a larger patio is a change in your brief. Discovering unsuitable material below an old surface is a different issue. Both need a discussion about the response, cost and programme. Ask the contractor to explain the finding and the proposed solution before additional work proceeds, except where an immediate action is necessary to make the situation safe.
Use a short written variation record
A practical change note can identify the original item, the revised work, the reason, the price effect and any timing effect. Photographs or an updated sketch may help. Keep your agreement with the project documents. This does not need elaborate software; the important thing is that both sides can understand what was agreed and when.
Link payment stages to the agreement
Understand the payment arrangements before work starts, including what each stage relates to. Keep invoices and receipts, and ask questions promptly if an invoice does not match your understanding. Do not assume that a particular deposit percentage or payment schedule is a universal rule. For advice about your rights or a disputed demand, use an appropriate independent consumer service.
Review the final account against the record
At handover, compare the original scope and agreed changes with the invoice. Discuss any outstanding items and how they will be resolved. Retain the product information and aftercare separately from the financial paperwork so both are easy to find. A clear record protects the working relationship by reducing reliance on memory when several decisions have been made over time.
Is a verbal conversation enough to approve a change?
It can leave uncertainty about what was said. Confirm important changes in writing so the work, price and timing are clear to everyone involved.
Your project checklist
- Identify the accepted version.
- Clarify estimates and allowances.
- Record variations and their price effect.
- Keep invoices, receipts and handover notes.
Further reading
Explore related advice
Plan your project with MPH
Tell us about your property and the work you have in mind.