Verkkofairfax county residents could see their property taxes increase by $666 on average, based on a proposed $4. 85 billion budget presented by fairfax. Verkkofairfax county residents could pay, on average, $524 more in real estate taxes in the upcoming budget year. County officials this week let residents. (dc news now) — homeowners in fairfax county will see a 7% increase in taxes this year, thanks to higher home valuations. 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 annually. Verkkohomeowners in fairfax county, virginia, will see their yearly tax bill increase as part of the fiscal 2025 budget leaders approved tuesday. As part of the.