What is the average price guide for building projects in Southampton?

In Southampton, the average price guide for common building projects such as house extensions, loft conversions, and garage conversions varies significantly based on the scale and complexity of the work.

For a single-storey house extension, you can expect to pay around £1,200 to £2,000 per square metre, with an average total cost ranging between £20,000 and £40,000. A loft conversion typically costs between £30,000 and £50,000, depending on whether it's a simple dormer or a more complex conversion. If you're considering a garage conversion, prices usually fall within £10,000 to £25,000, making it a cost-effective way to add functional space.

All builders you engage should hold relevant certifications such as NICEIC for electrical work and be Gas Safe registered if the project involves gas appliances. This ensures safety and compliance with local regulations. As building costs can vary due to factors like design choices and specific site conditions, it’s wise to consult multiple professionals for accurate quotes.

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