William Koehnlein is a interior Designer who has over twenty five years of experience. His interest is in building long lasting relationships with his clients, fulfilling their needs as they need his assistance. Following in his father’s (Interior Designer Walter Koehnlein) footprints he is head of the family business Collaborative Design in Waukesha, Wisconsin. No project is too small or too large for William to tackle. Some projects such as the Milwaukee Renaissance Luxury Condo has taken five years to complete and others just a few hours.His heart and soul is poured into each project. Bill cherishes his relationships with each of his clients who often become lifelong friends. William has comprehensive knowledge of materials, products and design elements that reflect in the projects that he works on. Projects include homes in Wisconsin, Japan, Florida, Arizona, California and more. Each project becomes a work of art.