What is the average price guide for building services in Brighton?

If you're considering building services like house extensions, loft conversions, or garage conversions in Brighton, it's essential to understand the average costs involved. In 2026, you can expect to pay around £1,500–£2,500 per square metre for house extensions, depending on the design and materials used. For loft conversions, the average cost ranges from £30,000 to £60,000, influenced by factors such as the type of conversion (dormer, mansard, etc.) and any necessary structural alterations. Meanwhile, garage conversions typically cost between £8,000 and £15,000, making them a cost-effective way to add extra living space.

It's important to ensure that any builders you hire are certified, such as being members of the Federation of Master Builders (FMB) or holding the NICEIC certification for electrical work, which guarantees quality and safety standards.

For residents in Brighton, obtaining multiple quotes can help you gauge the best value, as local market rates may vary.

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