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What is a scope of works and how can it help me budget?

4 min read
Oct '25 • by Heather

Quick summary

A scope of works is a detailed breakdown of expected tasks and costs, helping you budget accurately and avoid surprises. It should include project overview, costs, schedule, and what’s not covered. Typically, aim for a detailed document to prevent errors and disputes, and remember to include a contingency of about 10% of your total budget.

Pretty much every homeowner, when they’re extending or renovating their property, wants to make sure they’re getting the most out of their budget. No more so than when it comes to construction.

On average, construction costs will take up around 65% of your budget - not including VAT. Therefore, when it comes to mapping out your costs, you want to leave no stone left unturned during this stage. This is where a scope of works becomes important.

To help you manage your budget, here’s a breakdown of what a scope of works is and how it can help your finances…

What is a scope of works?

A scope of works can be a very general or detailed breakdown of the work and costs that are expected to be produced by a contractor under your agreed contract. You may also find it being called a ‘scope of work’ or ‘statement of work’.

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