PURPOSE : An integration development guidance providing method based on an index array of an address are provided to supply all development guidance related to lot information by arranging an index of a lot number that is extracted from plan information.CONSTITUTION : A plan number about planning information is given(S150). A lot number about lot information of a digital map is extracted(S200). The digital map is overlapped with a domain of a digital map corresponding to the plan information. The plan number about plan information and lot information are indexed and are formed in an array(S300). The address of the specific land is inputted. The planning information appointed to the specific land is searched through the array(S400).COPYRIGHT KIPO 2011