Prosperity Heights is a Community Parking District (CPD)
As a result, work vehicles and all trailer types are prohibited (per Section 82-5-7 Fairfax County)
Street parking must be done parallel to the street, including in cul-de-sacs, to allow easy emergency vehicle access. When parking in driveways, please do not block sidewalks. ACCORDING TO COUNTY REGULATIONS, NO CARS CAN BE PARKED WITHIN 10 FEET OF DRIVEWAYS.
Here's the link to the county regulations on parking: https://www.fairfaxcounty.gov/transportation/parking/parking-restrictions-and-related-issues