Lot 146 Gruenther Ridge is a walkout lot with no backyard neighbors! This lot is builder attached to Colony Custom Homes. Gruenther Ridge, off 216th and Gruenther Road in Gretna is a brand new subdivision featuring nearly 17 acres of green space along with a trail system and areas for future parks. Easy access to Highway 6 and 370. Gretna school district. Colony Custom homes is a custom home building company serving the Omaha Metro Area. Call today for more information!