GPO Designs specialises in the preparation of Planning Permission Applications, Building Control Applications and Planning Appeals for residential extensions, loft conversions and conservatories.Our aim is to offer a high quality service for the best possible price. GPO Designs initially offered services only within Essex but this has now been extended across the UK with our self survey planning a...GPO Designs specialises in the preparation of Planning Permission Applications, Building Control Applications and Planning Appeals for residential extensions, loft conversions and conservatories.Our aim is to offer a high quality service for the best possible price. GPO Designs initially offered services only within Essex but this has now been extended across the UK with our self survey planning and building control planning services