Verkkothis site provides assessed values and physical characteristics for all residential and commercial properties. Click on one of the property search links. Deadline for appeal is april 3, 2023. Especially if the next owner of your home will probably tear it down to build a brand new home,. Verkkothe department of tax administration's (dta) real estate division is tasked with collecting data for all real property in fairfax county. Dta uses that data to. Verkkothe fairfax county board of supervisors is proposing a shocking 7% increase in combined real estate taxes and assessments for the 2025 budget,.