Planning and Building Control GCS will complete all designs and applications on your behalf taking the headache and stress factor away. GCS will liase with the Planning and Building Regulations Officers throughout the whole project from concept to completion. Do I need Planning Permission for a Garage Conversion? In most cases planning permission is not needed, however a full plans application must be applied for and logged with your local planning authority and you will be issued with a unique case number . This is very important as new laws stipulate that any building alterations or change of use must be applied for even if we are certain of approval, as it is a legal procedure. Do I need Building Regulations for a Garage Conversion? Yes. All building works, conversions and alterations must be completed to the minimum standards for health, safety, welfare and convenience. More ...