Extension Build Cost Estimator

Ground Floor extensions


Ground Floor & First Floor extensions (Two Storey Extension)
*Please enter total square metres of ground floor only



This estimator will calculate a rough costing for extension construction.

For example: A 5 metre by 5 metre single storey extension equates to 25 square metres, therefore slide to ’25’ for your estimate.

Please note this tool is only to be used for estimation and is not a quotation. Actual quotations will vary depending on each particular extension build specifications.

You can contact us using the form in the Contact tab at the top of this page.