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

In 2026, the cost for building extensions in Wandsworth typically ranges from £1,500 to £2,500 per square metre. This price can vary based on the complexity of the design, materials used, and local labour rates. For instance, a standard single-storey extension may cost around £20,000 to £35,000, while a larger two-storey extension could escalate to £50,000 or more depending on its size and specification.

For loft conversions, you can expect costs to start at approximately £30,000, increasing based on the layout and any structural work needed. Garage conversions generally are more budget-friendly, often ranging from £10,000 to £20,000. It's important to hire professionals who are registered with relevant certifications, like NICEIC for electrical work, and ensure any gas installations are handled by Gas Safe registered engineers.

Considering Wandsworth's competitive property market, investing in a quality extension can significantly increase your home's value. Looking for professionals in your area? Find vetted providers on TradeMatch.