Reonovations Calculator for a 3M x 5M Ground Floor Rear Extension
Disclaimer: All the information on this page including the calculator below does not constitute legal or financial advice, but are “Considerations”. The amounts below are estimates and is aimed at showing you the significant costs other than the Builders cost when considering a ground floor extension in London, UK.
- The amounts below are based on a 3M x 5M ground floor extension, with no side extension and is under permitted development and no planning application needed. However, Building Regulations are required to ensure it is built to standard.
- These are based on London, UK Prices. Prices outside London may vary and are likely to be up to 20% – %30 lower.
UNDERFLOOR HEATING – Materials Only
As you can see the builders cost is ‘part’ of the overall cost. The builder may not give you the Overall Cost to Consider. They quote based on their own work.
The significant addition is your kitchen and internal fittings. Some people may ask their builder to fit the kitchen to reduce cost, but some kitchen manufacturers may not insure part or all of your kitchen if it is not fitted by their fitting service. In addition, it is always best to get a specialist kitchen fitter than a builder.