A contour and detail survey will result in a site plan which shows all relevant site information, typically site levels, the location of features, urban services and infrastructure, existing trees, existing buildings, structures and retaining walls, and frontage works (such as footpaths, overhead power, kerb and channel). The earlier in the process the survey is undertaken, the earlier development constraints can be identified. Constraints should be identified in the early stages of the design process, prior to committing significant resources to the project. The detail survey should ideally be undertaken prior to preparation of proposal plans.
Having a contour and detail survey will provide you with all of the site conditions in a manner which is both accurate and up to date. The survey information will also allow specialist consultants such as architects, engineers, and landscape architects, to design the proposal to suit the site conditions (eg a sewer pipe running through the site may have to be relocated or the building design altered to suit).