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What are the costs for a house extension in Highbury?

highburyAsked 2026-03-1923 views1 answers149 total votes

The cost of a house extension in Highbury typically ranges from £1,200 to £2,500 per square metre depending on the complexity and materials used. For a standard 20 square metre...

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Helen CrossBuilding Specialist · 14 yrs
Accepted Answer2026-03-19

The cost of a house extension in Highbury typically ranges from £1,200 to £2,500 per square metre depending on the complexity and materials used. For a standard 20 square metre extension, you can expect to pay between £24,000 and £50,000. Factors influencing the price include the type of extension, such as single or double-storey, and the design intricacies.

In addition to the construction costs, you should also factor in planning permission fees, which can be around £200 to £500, and any necessary building regulations, where compliance is essential. Hiring certified professionals, such as those registered with NICEIC for electrical work or Gas Safe registered engineers for any gas installations, ensures that your project meets safety and legal standards.

It's advisable to obtain several quotes from local builders to find the best deal while confirming their certifications and portfolio.

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