Building your dream Accessory Dwelling Unit (ADU) starts with understanding your numbers. Our easy-to-use ADU Financing Calculator helps you estimate your monthly payments based on your project’s total cost, interest rate, and loan term. Whether you’re considering a backyard cottage, in-law suite, or rental unit, this tool gives you a clear picture of how an ADU could fit into your budget—so you can move forward with confidence and peace of mind.