Cheap Apartments For Rent In Fairfax Va . Cheap is a relative term to communicate more affordable rental and. Use our detailed filters to find the perfect place, then get in touch with the property manager. The Mark Alexandria, VA apartments for rent from www.apartmentlist.com The benefits of renting a cheap apartment in fairfax va are cheaper monthly rent costs, lower utility bills, and less overhead. The average apartment rent in fairfax county is $2,002 per month so any rental south of $1,601 would be considered cheap here. The fairfax county redevelopment and housing authority (fcrha) currently owns 9 affordable senior housing communities and 2 affordable assisted living communities throughout the.