Planning Office

The Prince William County Planning Office launched an enhanced, live version of the Build-Out Analysis in December 2025. The analysis was built as an interactive online tool to provide continuously updated information about the county's development potential. Prior to the analysis being available as an online application, it was an annual, hard-copy document that took many man-hours to analyze the data and create the booklet and was out-of-date before even being published.

Unlike previous print, hard-copy versions, the relevant data was "locked" at a specific point in time (typically December 31 of each year), where the new online analysis updates quarterly and/or whenever the Board of County Supervisors adopts a new land development case. The hub includes detailed information about how and when data updates occur.

The digital platform also includes user-friendly features such as data filtering and exporting of attribute data tables. All the data layers used for the analysis are available for download from the  Prince William County GIS Open Data Portal.

The analysis is now "embedded" on the web page and can be viewed directly on the web page and can be enlarged to a full screen view.

View analysis full screen

 

About the Build-Out Analysis

The Build-Out Analysis estimates how much residential and non-residential development could occur if all land within the county were built to the maximum extent allowed by current zoning.

The analysis offers valuable insight into:

• Future growth capacity;
• Infrastructure needs;
• Policy considerations supporting sustainable, balanced development.

As a planning tool, the Build-Out Analysis helps answer questions such as:

• How much housing or commercial space could be built in the county?
• Where does remaining capacity for growth exist, and where are there constraints?
• What impacts might different growth scenarios have on infrastructure, services, and the environment?

In February 2026, a page dedicated to Data Center Development was added to the analysis. Data center information is updated as quickly as possible and includes:

• Existing data center buildings and campuses.
• Buildings and campuses that are under construction but are not complete.
• Pending land use development cases that include data center facilities, and more.

Data Updates

Premise point data is reviewed and referenced on a quarterly schedule from building occupancy permits to update the residential and non-residential premise point layers which in turn updates other data layers related to the premise points.

Layers in the analysis may also be updated after the Board of County Supervisors adopts a new rezoning case, special use permit, or Comprehensive Plan amendment that changes the approximation of residential units yet to be built or an approximation of unbuilt non-residential gross floor area (GFA) in square feet. This task is completed within two weeks after the Board of County Supervisors meeting. These layers are commonly referred to as the "pipeline".

The Build-Out Analysis also provides a projection of the mid-range of future development based on the 2040 Comprehensive Plan Long-Range Land Use Plan and helps determine quantity and location of future growth for Prince William County under existing conditions.