Contractors Garage is ideal for the small business owner or hobbyists who needs a small affordable alternative to their home garage, restrictive mini-storage, or traditional industrial space that is often too large and expensive. Address: 636 E Dennis Ave, Olathe, KS. Located just west of I-35, north of Old Hwy 56, east of US169 hwy (Harrison), and South of Santa Fe, behind the car wash and next to the Legion Hall.