What is the difference between an ADU and a JADU?

Accessory Dwelling Units (ADUs) come in many shapes and sizes but are always a self-contained home that is smaller than the main house and legally part of the same property. They must have a kitchen, bathroom, and place to sleep, and typically range from 150-square-foot studios to 1,200-square-foot homes with multiple bedrooms. They can be larger if you go through the process to get a Special Permit.

Junior Accessory Dwelling Units (JADUs) are smaller units of up to 500 square feet of converted space in a single-family home and must include an efficiency kitchen (sink, stove, fridge, and counter). Some JADUs have their own bathroom, while others share one with the main house. State law now allows homeowners to have both a JADU and a regular ADU on their property. Construction costs for JADUs are typically much lower.