Colonial Grand at Onion Creek for Rent in Austin, Texas. South Austin Apartments, such as Colonial Grand at Onion Creek combines convenience with luxury and charm in a Hill Country setting. At Colonial Grand at Onion Creek, you’ll be nestled in 32 acres of the finest, classic Hill Country, overlooking Onion Creek in South Austin. Make Colonial Grand at Onion Creek Apartments for Rent your new South Austin rental today! Contact our Austin Apartment Locating Team for more information on move-in specials, deals and discounts on this scenic Austin Onion Creek area rental community.