
Dean Giamblanco
Hi Simon Ballpark figures are good for an indication of the top end costs of your project but any job, especially an extension or renovation should take some time to finalise. Ballpark figures for an extension can range from six hundred and fifty to one thousand pounds per m2. Again that is a figure purely for you to decide whether or not it's worth your time to go ahead and book in architects etc. Any good builder will give you free estimates and advice on what steps to take. Most builders will have an architect and structural engineer they can recommend and vice versa. A good architect will guide you or through all of the preliminary stages of dealing with the planning permission/building warrent etc. Dean Dovetail