What is the average price guide for building in Keighley?

In 2026, the average costs for building services in Keighley are as follows:

## House Extensions A rear or side house extension can typically range from £15,000 to £30,000. The final price will depend on factors like size, materials, and whether you need planning permission. Ensure that your builder is registered with a recognized body such as the Federation of Master Builders (FMB).

## Loft Conversions Converting a loft into a usable space will usually cost between £20,000 and £40,000. This can vary based on the complexity of the conversion and insulation requirements. Look for professionals who are NICEIC-certified for electrical work to ensure compliance with safety standards.

## Garage Conversions Turning a garage into a living space generally ranges from £8,000 to £15,000. The cost is influenced by the level of work needed, including insulation and heating. It's a good idea to hire builders who have experience with local regulations and can navigate any necessary planning permissions.

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