An elevation survey is usually required when a home or business is in close proximity to a waterway (stream, creek, pond, lake, etc.) and is used to determine if the structure is located within the flood limits that have been established be FEMA. Many banks and other lending institutions require the purchase of flood insurance as a condition of loaning money for the property. ACS DESIGN will provide the field survey and mapping necessary to prepare an elevation certificate that will allow you to confirm the flood elevation that FEMA has set for your location