Thank you very much for your information. I have checked on line for the CIL with the local council and below is what I found .. not sure if it applies to us as our barn will be 130 sq m.
Demolition will be handy if included as we have an asbestos roof that we hope we can replace ...
Minor Developments:
Less than 10 residential units and where the gross floor space to be built is up to 1,000 square metres, or where the site area is less than 1 hectare. Where the number of dwellings to be constructed or floor area proposed is not given in the application, a site area of less than 0.5 hectares is classed as a minor development.
£1,500