Detail surveys or topographic (Topo Survey), are generally provided to give the engineer, architect or client an overview of a site which is to be constructed or built on. This type of survey would include levels and contours indicating the lay of the land. It would also include any services that may exist i.e. water mains, sewer connections, kerb and gutter levels, trees, fences and utilities. In some instances there may be a requirement to indicate the roof and gutter levels of adjoining properties to ensure that the building to be constructed is ascetically sound, and meets the councils building regulations prior to construction.