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What are the costs for a house extension in St Albans?

st-albansAsked 2026-03-1935 views1 answers80 total votes

In St Albans, the cost of a house extension typically ranges from £1,200 to £2,000 per square meter in 2026. Factors such as the size of the extension, materials used, and any s...

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Helen CrossBuilding Specialist · 11 yrs
Accepted Answer2026-03-19

In St Albans, the cost of a house extension typically ranges from £1,200 to £2,000 per square meter in 2026. Factors such as the size of the extension, materials used, and any special features can significantly impact the final price. For example, a standard 20 square meter extension could cost between £24,000 and £40,000.

It's essential to ensure that the builders you hire are qualified and registered with relevant certifications such as NICEIC for electrical work or Gas Safe for any gas-related installations, ensuring safety and compliance with regulations. Additionally, local council planning permissions may be required for extensions and conversions.

When searching for a builder, consider looking for ones that specifically mention they operate near me local building St Albans to find professionals familiar with local regulations and standards.

Looking for professionals in your area? Find vetted providers on TradeMatch.

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