What is the cost in 2026 for building a house extension in Leicester?

The cost in 2026 for building a house extension in Leicester generally ranges from £1,200 to £2,000 per square meter. The final price depends on various factors, including the size of the extension, the materials used, and whether you’re adding features like bi-fold doors or roof lanterns. For instance, a standard 20 square meter extension could cost between £24,000 and £40,000.

Loft conversions can cost around £30,000 to £50,000, while garage conversions are usually more affordable, averaging between £10,000 to £20,000. These prices can vary significantly based on the complexity of the project and any planning permissions required.

It's crucial to hire certified professionals, such as those registered with the Federation of Master Builders or having Local Authority Building Control (LABC) certification, to ensure compliance with building regulations.

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