The WDU Program establishes maximum household income limits between 60 and 120 percent of the Area Median Income (AMI). The 2024 AMI for a household of four is $154,700 as set by the US Department of Housing and Urban Development.
The zoning ordinances also outline size and structure limitations for ADUs in Fairfax County. The size of an ADU is typically limited to a certain percentage of the primary dwelling's floor area, often ranging from 35% to 40%.
Rental Affordable Dwelling Units are required to be affordable to households with incomes of 60% or less of the area median income. Affordable Dwelling Unit developments are provided an approximately 20% bonus density through the modification of certain dimensional requirements of the applicable zoning district.
Rental Affordable Dwelling Units are required to be affordable to households with incomes of 60% or less of the area median income. Affordable Dwelling Unit developments are provided an approximately 20% bonus density through the modification of certain dimensional requirements of the applicable zoning district.
How Does the WDU Policy Work? The WDU Policy allows developers to receive a "density bonus" on their development project of up to 20 percent in exchange for a commitment of WDUs across a variety of income levels.