LIST OF MEDICAL/DENTAL BUILDINGS FOR SALE OR SPACE TO LEASE Looking to purchase a medical/dental building or lease existing space? We have an updated list of medical/dental buildings for sale in Clackamas, Multnomah, Washington, Yamhill, Marion and Polk Counties.. Building sizes range from 2,000 sq. ft. up to 20,000 sq. ft. Some buildings have existing dental space already plumbed. Contact Megan Urban at firstname.lastname@example.org.