Loft Conversions built by Jackson Lofts, Brighton

Loft Conversions built by Jackson Lofts, Brighton

Yes, if you are adding another habitable room. Speak to your local estate agent and ask them advise on your conversion ideas. Here is what the web has to say:
http://www.self-build.co.uk/10-ways-add-value-your-home
http://www.self-build.co.uk/how-approach-loft-conversion