What’s the difference between an ADU and a JADU?

What's the difference between an ADU and a JADU?

If you’re still learning about the world of ADUs (accessory dwelling unit), it can be confusing to keep track of all of the names and titles. ADU, Granny flats, casitas, garage conversion, in-law unit, and more.

Well if that wasn’t enough, here’s another one to keep track of: meet the JADU (junior accessory dwelling unit). According to the recently passed housing laws at the state level, single-family homeowners are now eligible to add both an ADU and a JADU on their property.

The short answer is that a JADU is a smaller version of an ADU. It is an independent, legally rentable unit that must exist within the existing dwelling unit or an attached accessory structure (example: garage).

JADUs offer interesting construction options that make sense in a number of cases. For example, they may share systems with the original dwelling, leading to simpler renovation plans. In addition, they can contain a very simple kitchen with small appliances and share a bathroom with the original dwelling. All of this means that the development costs for JADUs are lower. While they can be rented out, they're typically designed for cohabitation.

So if you’re particularly ambitious and looking to maximize rental income, home appreciation, and living space, it might make sense to invest in an ADU as well as a JADU; it is your legal right to have both. But before you do, read below to make sure that the JADU requirements are right for your specific property.

Consult the chart below to understand the difference in requirements between an ADU and a JADU:

One important note is that JADU’s can only be built on owner-occupied properties. This means that the homeowner cannot possess an ADU if they do not occupy either the JADU or the primary home. Owner occupancy requirements are outlawed for ADUs, but still apply to JADUs, so keep this in mind if you are interested in a JADU.

In addition, the construction of a JADU may require replacement parking if it is constructed replacing the garage. If you convert your garage into a JADU, you may be legally required to create that parking space somewhere else on your property.

Is a JADU right for you? Check to see if your property is eligible for ADU and JADU construction through the Housable Property Check Tool.

Find out now!

Sources:

https://srcity.org/2280/Accessory-Dwelling-Units

https://www.hcd.ca.gov/policy-research/AccessoryDwellingUnits.shtml