1. Home
  2. Learn About ADUs

What's the difference between SB-9 and JADU?

Both JADUs and SB-9 allow adding housing units on existing lots. JADUs are helpful for homeowners who want to provide housing for family members or generate rental income while minimizing the cost and complexity associated with constructing a new unit. SB-9 permits splitting residential lots and building additional housing units on them.

SB-9 vs JADU, side by side

A Junior Accessory Dwelling Unit (JADU) is a self-contained living unit smaller than a traditional ADU and typically created by converting a portion of an existing primary dwelling unit, such as a bedroom or a garage. JADUs have an entrance, bathroom, and kitchenette but do not require additional parking, as they are not considered a separate unit from the primary dwelling.

SB-9 is a California state law allowing for the construction of up to two additional dwelling units on a lot with an existing single-family home, subject to certain conditions.

The main difference is that JADUs are smaller units created within an existing primary dwelling, while SB-9 allows for the construction of up to two additional units on a lot with an existing single-family home. JADUs are typically more affordable and more accessible to construct, as they do not require building a new structure, while SB-9 can provide more housing units on a single lot.

Related Articles

Want to build an ADU in California?

We can help you design, plan and get permits for your ADU today!