What is the cost in 2026 for building extensions in Neath?

In 2026, the cost for building extensions in Neath typically ranges from £1,200 to £2,000 per square meter. This price can vary greatly based on several factors including the complexity of the design, the materials used, and local labour costs. For instance, a single-storey extension may start around £15,000 for a basic project, while a larger, more complex two-storey extension could easily exceed £50,000.

## Additional Costs Don't forget to factor in costs for planning permission, which can be around £200–£500, and potential structural surveys which might add another £300–£600. It's crucial to hire professionals who are qualified and certified, such as those registered with the NICEIC for electrical works or Gas Safe for any plumbing-related tasks.

If you're considering a loft conversion or garage conversion as alternatives, these can also vary widely. Loft conversions may start around £20,000 and garage conversions can range from £10,000 to £30,000 depending on the scope of work.

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