What are the costs for house extensions in Durham?

The cost of a house extension in Durham typically ranges from £1,200 to £2,000 per square meter in 2026. This means a standard 20 square meter extension could set you back between £24,000 and £40,000, depending on design and materials used. Factors influencing the price include the complexity of the build, any required groundwork, and the quality of finishes. It's important to ensure that your builder is certified by organizations such as NICEIC for electrical work and FENSA for any windows installed, providing peace of mind regarding safety and compliance. Additionally, local planning regulations may affect the project timeline and budget. Be sure to check with Durham County Council for specifics related to your area.

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