SCO Project: V3, V4 Statewide Parcel Databases

The Statewide Digital Parcel Map Initiative is a multi-year, multi-facet, DOA initiative resulting from Act 20, the state’s 2013-15 biennial budget bill. The Act directed the DOA to develop a parcel map implementation plan and established a requirement for counties to post certain parcel information online by 2017, including property tax assessment data, zoning information, address data, and acreage.

The initial phase consisted of two key development cycles for the statewide parcel map: V1 and V2. The V1 Parcel Project yielded a statewide parcel database aggregated from existing county and municipal parcel datasets and was made publicly available on July 31st, 2015. The V2 Parcel Project yielded a statewide parcel database aggregated from existing county and municipal parcel datasets and was made publicly available on August 31st, 2016 via a data download page and web app. The V2 dataset includes the geometries of approximately 3.34 Million parcels. Five statewide county administered zoning layers (floodplain, airport, general, shoreland, and farmland zoning), were also aggregated as a part of the V2 project.

The V3 and V4 projects extend this work forward. The goals of the V3 and V4 projects are:

• Tracking progress. The statewide parcel layer is built in an iterative fashion. V3 and V4 will track progress made with investments to local governments, specifically on benchmarks for parcel dataset development instituted with the 2016 WLIP grant application.

• Four A’s – Authoritative Automated Asynchronous Aggregation. A goal is to achieve these “four A’s” so county data stewards can submit datasets at any time or interval by automatically merging the local data with the most current statewide database.

• Moving to a contributor model of aggregation. A goal is to move toward a more efficient, automated process for data aggregation (a “contributor model”), rather than an aggregator model requires which requires more state resources be dedicated to the aggregation process. The contributor model should require fewer staff resources and thereby reduce state costs for sustaining the statewide digital parcel map.

• Outreach and technical assistance to counties. This may take the form of further development of existing technical tools or the creation of new tools for counties and municipalities to use. It could also involve site visits and direct assistance.

• Incremental improvement. Improvement of the statewide parcel layer itself, as well as workflow and methods for each step in the aggregation process, with each new version of the layer. As with the database, the hosting and display should keep pace with current technology and be continually improved to meet users’ needs.

• Lean government principles. The V3 & V4 Projects should seek to create and realize efficiencies in general, and to integrate or collaborate with other state GIS services where possible, like the Legislative Technology Services Bureau.

• Responsiveness to public needs and economic development goals. Evaluate parcel layer user suggestions and implement improvements where feasible.

Specific V3 and V4 Project deliverables are:

• A statewide parcel database and map layer aggregated from existing county and municipal
parcel datasets.

• Statewide county-maintained zoning layers aggregated from existing county datasets.

• Display of parcel and zoning layers. 

• Download/export of data and data subset capabilities, including a clip, zip, and ship or
download by filter function. 

• Hosting solution for parcel and zoning layers. 

• Prototype solution for collection and display of public lands information maintained by
the county.

  • Implementation of the Four A’s solution.


Tags: Projects