Are you shopping for an interior unit townhouse in Vienna? Do you need a comprehensive list of subdivisions with $824,900 interior unit townhouses advertised for sale in Vienna? 9420 Regency Crest Dr listed for sale at a price of $824,900. This property has 3 full baths and 1 half baths and is in Fairfax County. Our real estate agents are dedicated to excellence and are obliged to continue their education after license.