In 2004, Anne Arundel County recognized the need to develop a seamless digital parcel map to manage an estimated 330,000 parcels in the county.  With approximately 200,000 property boundaries captured on the Department of Public Works existing 1:480 scale (1”= 40’) water and sewer utility maps, the county decided to utilize this information to jump start the development of the parcel layer. Wishing to utilize the ESRI Geodatabase, the county contracted with SDS, an ESRI Business Partner, for consultation and conversion services.   

Phases one and two of the project entailed the incorporation and clean-up of existing AutoCAD data from multiple organizations, geodatabase design, and QC of file layers.  The third phase included the migration of AutoCAD data from the Maryland Department of Planning, establishment of unique parcel or polygon identifiers, the retrieval, organization, and categorization of source plat maps,  and the capture of plats by utilizing coordinate geography (COGO) and heads-up digitizing of Maryland State Tax Maps.  The fourth and final phase included repopulating non-unique identifiers, and resolution of non-unique Parcel Identification Numbers (PIN) to match the Intermediate Consolidated Property File (ICPF) provided by the county.   An additional component of the final phase was the incorporation of road projects, and the COGO and best-fit of subdivisions plats to the county’s orthophotography.  This data was all delivered in feature classes within the existing.

A prototype area was completed before each phase to determine the appropriate steps necessary to receive process approval.  “I am very impressed with SDS’s work on the project” says Caroline Gaulke, Geographic Information Systems Manager for Anne Arundel.  At the conclusion of phase four the overall percentage match of the PINs to the ICPF was calculated at 98.7%.  

About Smart Data Strategies
Founded in 1989, Smart Data Strategies, Inc. provides a variety of GIS software and services focused on Real Property Intelligence™ and its use by an assortment of clients, including local, state, and federal government agencies, as well as private industries utilizing GIS.  Services include DREAMaps™ land records management software which currently is being used to manage 8 million parcels across the United States, parcel conversion, geodatabase design and implementation, GIS/CAMA integration, database normalization, CAD-to-GIS conversion, systems integration, inventory management, ROW management, e-commerce data brokerage and distribution, training, toll-free support, as well as GIS data conversion services. Visit www.sds-inc.com for more information about Smart Data Strategies products and services.

About Anne Arundel County
Anne Arundel County borders the Chesapeake Bay and is equidistant from Washington D.C. and Baltimore. With over 533 miles of shoreline, the Country furnishes waterfront living to many residential communities. Annapolis, the State Capital, has been named one of the 10 best places to live in the United States. The city's historic district is a major tourist attraction and gathering place for dining, shopping and entertainment.

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