As of , there are 27 properties listed for sale in the city of Preston and 27 properties listed for sale in the ZIP code 21655. Those 27 Preston properties include 27 single family homes and 0 condos. This single family residential home located at 6563 Ganeys Wharf Rd in 21655 was last listed for $—. This is 100% below the median of $229,000 for that ZIP code and 100% below the current median price of $229,000 for Preston. 6563 Ganeys Wharf Rd is roughly 1,376 Sqft, which is 28% below the Preston median of 1,899 and 28% below the 21655 ZIP code median of 1,899. This property's price per square foot was —, which is 100% below the current median price in 21655 of $114 and 100% below the Preston median of $114 per Sqft.