There are many reasons for opting for a loft conversion. This method of extending your home is usually the most cost efficient option and in the majority of cases does not require Planning Consent. Our Free Home Visit & Survey will clarify any Planning issues for you. Loft conversions can follow two styles - a Velux Roof Light Conversion or a Dormer Construction Conversion. A Velux loft conversion retains the original roof lines whereas a Dormer loft conversion has a protrusion out from the roof.