Many clients provide the existing drawings or site maps to Architectural CAD drafting team that are either prepared by their previous architect or are supplied by the authorities. However, relying solely on these drawings sometimes proves very costly; it is always prudent and safe for the design team to verify the accuracy of these drawings by conducting their own site survey before undertaking the design of any proposed building. This is just as important while undertaking a renovation or addition job. Overlooking this aspect could ruin the whole design or face problems with the building aut