La Hacienda No. 10 Mexican Restaurant will open in Placita de Oro in Oro Valley in October.

Restaurant owners Ruben and Maria Sahagun of Arlington, Wash. have signed a lease for a 3,619 square feet building at 11931 N. First Ave., Suite 104, in the shopping center at the southwest corner of North First Avenue and East Tangerine Road. The Sahaguns own two La Hacienda Mexican Restaurants in Washington.