What is the average price guide for building in Dulwich?

In 2026, the average price for building projects in Dulwich varies depending on the type of work. For a house extension, you can expect costs ranging from £1,500 to £2,500 per square meter. This means that a typical extension of around 20 square meters could cost between £30,000 and £50,000.

For loft conversions, the costs are generally between £1,200 and £1,800 per square meter. A standard loft conversion might set you back around £40,000 to £60,000, including structural adjustments and finishing.

If you’re considering a garage conversion, prices typically start at around £10,000, going up to £25,000, depending on the desired layout and amenities. Be sure to hire professionals who are registered with relevant certifications like Building Regulations, NICEIC for electrical work, and Gas Safe if gas appliances are involved.

These prices can vary based on materials, labour, and specific project details.

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