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NYS ITS GIS Program Office

Geographic Information Systems Clearinghouse

Street and Address Maintenance (SAM) Program


Program Objective:

The Street and Address Maintenance (SAM) Program maintains statewide authoritative street and address point databases to support NG9-1-1 and other stakeholder and customer activities through extensive state and local government partnerships and the use of data maintenance tools. Data products are compliant with NENA standards, are publically available, and are the source of the NYS enterprise geocoding service.


The NYS GIS Program Office recently completed a major project to create a detailed statewide address point database that built out the existing NYS Address Points, improved their positional accuracy, added subaddresses (e.g. apartment, building, suite, floor, etc.), and moved them into the NENA address standard. In a separate but related project, the NYS Streets database, which has been maintained in the NYS GIS Program Office for several years, was also migrated into the NENA standard. Standardized, accurate, and up-to-date street centerlines and address points are needed in Next Generation 9-1-1 (NG9-1-1) systems.

Building and maintaining street and address point data at the high level needed for 9-1-1 dispatch ensures it is suitable for multiple applications. For example, the SAM databases are also being used to host a statewide geocoding service. State and local agencies need to geocode addresses as point locations to support a variety of functions. This allows multiple state agencies, local governments and other entities to utilize this shared service to get consistent, accurate geocoding results. In addition, this eliminates the redundant cost and effort of each organization maintaining its own geocoding service, and the potential of different entities receiving conflicting results from different geocoding services.