In an area where only about 5% of Potomac homes for sale are under $500,000, more is required for a home to be considered luxury. Just over the top 10% of homes for sale in Potomac are over $3 million. Most have 6 or more beds, more than 6 baths, and are on 2 or more acres. Price per square foot ranges from the upper 100s to the lower 700s and homes were built sometime within the past 60 years.