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As families grow and lifestyles change, many homeowners begin looking for ways to create more living space without leaving the neighbourhood they love. Moving home can be expensive, stressful, and time-consuming, making a house extension a more practical long-term investment. Among the many extension options available, wrap-around extensions have become increasingly popular across London because they combine the advantages of both a rear extension and a side return extension.

If you are planning to expand your living space, one of the first questions you will ask is: how much does a house extension cost in London in 2026? With rising property prices and limited space across the capital, many homeowners are choosing to extend instead of moving. A well-planned extension can add both comfort and long-term value but only if you understand the real costs involved. The truth is that house extension cost in London varies widely depending on size, design,