Homeowners requiring Ordnance Survey location plans for planning permission should find this website very. You can purchase maps for planning applications (conservatories / extensions / change of use / signage) in Local Authority approved PDF files. OSmaps-Online.com is an official Ordnance Survey Data & Mapping Centre meaning maps are approved for a variety of uses especially trade OS map users who may require Ordnance Survey Maps in a CAD friendly DXF format. The full Ordnance Survey mapping range is available to view online and there is a Product Guide to help you select the correct product for your needs. Call FREE on 0800 404 9495 today to discuss your mapping needs.