Costs, budgeting & value

Understanding the true cost of an extension goes beyond a simple price per square metre. From measurement accuracy and specification choices to contingency planning and potential value uplift, this section explores the financial side of extending your home. The aim is to give you clearer expectations, so you can budget realistically and make informed decisions before committing.

3 most common worries for people starting a home extension

Worried about extension costs, planning permission or choosing a builder? This guide explains why these fears happen and how to stay in control.

Measuring your property

Whether you're planning an extension, loft conversion or renovation, precise measurements form the bedrock of your entire project, affecting everything from planning applications to material quantities and contractor quotes.

Home extension costs: why price per square metre isn’t enough

Price per square meter is a helpful starting point, but not enough on its own to accurately plan or budget your extension.