I don't know if I have heard of Treo. I'll do some research. I noticed after posting my question that Courtyard is proposed at 22 meters. So I suppose for the time being, this one will be the tallest.I have heard Treo referred to as being 23m tall, but that may just be the height limit for its land use district. Courtyard33 is also proposing to be 21m (and change) tall.