What are the costs for a house extension near me local building Feltham?

In Feltham, the cost of a house extension typically ranges from £1,200 to £2,500 per square metre in 2026. Several factors influence the final price, including the complexity of the design, materials used, and any additional features like bi-fold doors or skylights. For a standard 20 square metre extension, expect to budget between £24,000 and £50,000. Additionally, ensure that any builders you hire are registered with the Federation of Master Builders (FMB) or hold relevant certifications like NICEIC for electrical work and Gas Safe for any heating installations. Local builders in Feltham can also help with navigating planning permissions, which can add costs of around £500 to £1,500 depending on the nature of your project. Remember to always get multiple quotes and check reviews before committing.

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