Enhancing Boulder County’s Mapping Systems for Public Use

Boulder County Assessor’s Office – Parcel Mapping Modernization

GCS partnered with the Boulder County Assessor’s Office to modernize its aging E-Mapping system, a critical tool used by multiple county departments including Land Use, Public Health, and Parks & Open Space. Originally developed in-house using Esri’s ArcIMS, the legacy platform no longer supported integration with the County’s upgraded Accela and custom CAMA databases.

“Our GIS manager has picked
up how to manage the code
pretty quickly an we are
getting quite a list of what
folks would like next. Quite a
testimony to a job well done.“

-Cynthia Braddock, GIS
Deputy Assessor, Boulder
County Assessor’s Office

To meet evolving technical standards and maintain a high level of public service, GCS delivered a next-generation ArcGIS Server-based mapping application. Developed using C#, Microsoft Silverlight, and Microsoft SQL Server, the new system preserves familiar user functionality while significantly enhancing performance, integration, and usability.

Key features include:

• Integration with external search/display tools across departments
• Secure user authentication with role-based access
• 58 interactive data layers with intuitive symbology, labels, map tips, and scale controls
• Advanced search capabilities by parcel number, owner, address, and more
• Real-time access to high-resolution imagery and third-party mapping services like Google Earth and Bing Maps

The result is a robust, intuitive parcel mapping interface that supports Boulder County’s GIS staff and provides the public with easy, accurate access to spatial data.

Boulder County, Colorado – About

Boulder County is home to more than 300,000 residents and includes some of the most diverse, natural landscapes and sustainable development along the Northern Front Range of Colorado. 

From visionary open space, land use and sustainability policies to forward-thinking and compassionate human services programs, our county government helps foster a vibrant, healthy and active community. 

The county seat is the City of Boulder. Other incorporated towns and cities include Erie, Jamestown, Lafayette, Longmont, Louisville, Lyons, Nederland, Superior, and Ward.