Welcome to Jahnke Landscaping LLC, a professional, friendly and reliable Architectural & Engineering Services in Lannon dedicated to providing high quality Architectural & Engineering Services for commercial and domestic clients throughout Wisconsin. The Jahnke Landscaping LLC offers professional workmanship, competitive prices and high quality service delivered on time and within budget. Jahnke Landscaping LLC, which is located at Lannon,Wisconsin, was set-up in 2010.