Real Estate Assessments

** The 2021 real estate assessments are available on-line at

***COVID-19 Update– The Real Estate Assessments Office re-opened to the public beginning Tuesday, June 1, 2021.  Visitors to our office who are unvaccinated or not fully-vaccinated are strongly encouraged to wear masks.  If you have or recently had fever, cough, or shortness of breath, please refrain from entering County buildings.

All real property in Prince William County, except public service properties (operating railroads, interstate pipelines, and public utilities), is assessed annually by the Real Estate Assessments Office.

The Assessments Office mailed the 2021 assessment notices beginning March 9, 2021. You may view the 2021 assessments via the online Real Estate Property Assessment System.

The Real Estate Assessments Office collects information regarding property descriptions, property sales, and other real estate market data. To ensure property descriptions are accurate, County appraisers periodically inspect properties to verify current data.

One or more of the following methods is used to value property:

  1. The Sales Comparison Approach: The assessed value is based on recent sales of similar properties. Properties that have sold are analyzed and adjustments are made for differences such as size, condition, age, location, and interior and exterior amenities.

  2. The Cost Approach: Current materials, labor costs and depreciation rates are used to determine how much it would cost to replace a property. Also, the Assessments Office determines how much a similar lot would be worth if it were vacant.

  3. The Income Approach: Industry-derived figures are used to determine the income a property would generate and the cost to maintain and operate that property.

Real estate assessments are a matter of public record. Other public information available at the real estate assessments office includes sale prices and dates, legal descriptions, descriptions of the land and buildings, and ownership information.

If you have questions about the real estate assessment process, please contact the Real Estate Assessments Office at 703-792-6780 or