What if the extra space behind your home could earn over $20,000 a year? Across Minneapolis, homeowners are discovering a simple way to turn unused land into steady income. It’s called an Accessory Dwelling Unit, or ADU—a small, independent home built on the same lot as your main house. With modern rental rates reaching $1,800 per month, an ADU is one of the smartest ways to build long-term wealth without buying another property.