Real estate in Observatory is on the rise, with listing prices increasing 10.1 percent year-over-year. The average listing price was $138,950 in last year and reached $153,000 in this year. During the same period, inventory tightened significantly, creating a more competitive market amongst homebuyers, with a 50 percent drop in homes for sale. A number of residential properties in Observatory feature river views so you can sit back and relax at home and enjoy the sights that nature provides. A fair number of properties in this vicinity have powder rooms, which can be kept clear for guests or just used as an extra space for family members.