Highlands homes for sale are a real estate mix of character houses, semi-bungalows, four-plexes, and mature houses. Some Highlands properties on Ada Boulevard have a long history that began our city's journey. This part of northeast Edmonton has no relevance to the average price per square foot, especially along Ada Boulevard. In 1911, real estate developers McGrath and Holgate built their mansions on Ada Boulevard which was named after McGrath's wife.