If you are reading this article, you already know what ADU is (Accessory Dwelling Unit), however do you know what is a JADU (Junior Accessory Dwelling Unit)? Do you know the difference between those two?

One of the most important ADU rule changes that took effect beginning of 2020 is a provision from California state bills AB68 and AB 881 that allows both an ADU and a Junior ADU (JADU) on the same lot with a proposed or existing single-family dwelling. Which means single family owner can add two rental units on their property: an ADU and a JADU.

Here is a summary of the JADU rules in those bills:

  • Size – JADU max of 500 sq. ft.
  • Location – JADU must be within a proposed of existing single-family dwelling or attached accessory structure (attached garage/pool house/recreation/bedroom etc…).
  • Expansion – JADU may include an expansion of up to 150 sq. ft. beyond the footprint of the existing, however this expansion is limited to accommodating ingress and egress (hallways, entry way, etc..).
  • Entry – JADU exterior access (a separate entrance for the JADU) is required, as well as an entry between JADU and the existing single-family dwelling.
  • Parking – No parking required for a JADU.
  • Bathroom – JADU may have a separate bathroom or shared with the single-family dwelling.
  • Kitchen – JADU kitchen must meet “Efficiency Kitchen” requirements:
    • Cabinets and counter-tops in proportional size in relation to the JADU size.
    • Kitchen sink (16”x16” max.) with a small drain line (1.5” diameter max.)
    • Appliances that require electrical service only, not greater than 120 volts.

Difference Comparison

Parameter ADU JADU
Size Max 1,200 Sqf Max 500 Sqf
Location Attached or Detached Attached
New Construction Allowed   Yes No*
Parking Depends Location & Situation No
Utilities Separate Shared
Address Separate Shared
Kitchen Full Size or Kitchenette Efficiently Kitchen
Bathroom Separate Separate or Shared
City Application Fees Thousand $$$ Hundreds $$

*Add on of 150 Sqf for ingress and egress is allowed. Building a home addition that later can be asked to be converted to JADU is also optional.

Learn More About Junior ADU

Featured Posts

Will Your Converted Garage Be Heat Efficient?

If you convert your garage into an accessory dwelling unit (ADU), it's important to make sure that you can heat and cool it efficiently. Not only will this allow you to save you money, but it can also reduce your household's energy usage, which helps to minimize your...

Are You Thinking of Adding an ADU to Your Home?

What you need to consider before adding an ADU to your home. Accessory Dwelling Units, ADUs, continue to rise in popularity across the country. Under new California state law, the term ‘accessory dwelling unit’ describes a small, self-contained residential unit...

9 Main Room Addition Mistakes to Avoid in Every Home Addition

There are many reasons why a homeowner would consider a home addition or a complete home rebuild. Families grow, and as their needs change, so does their living space. In other cases, family members may leave for college, and some areas that were solely their...

Bathroom Remodeling Tips

Bathroom renovations are essential in improving your home's look and updating your electrical and plumbing work. However, it can be a challenging project for many homeowners that are not familiar with the home remodeling process. You need to know what to expect and...

Dos and Don’ts of Home Additions

Building the Best in Home Additions As families grow and needs change, a home can start to feel compact and inadequate. While the option of moving home isn’t available for everyone, there are some great home additions that can help improve the existing living space....

Tips for Designing and Building a Guest House

Tiny Tips for Building Small Houses ADUs are hot right now. High land costs and permitting concessions have made the thought of building an Accessory Dwelling Unit or a Guest House popular among homeowners and want-to-be homeowners in the last couple of years. If...

7 tips to hire an ideal building contractor in Los Angeles

Not every building contractor is fit to work on every project, so before you decide, having the proper discernment will ultimately optimize your investment. The 7 most important tips to hire the ideal building contractor. 1. Know what you want and why. It may seem...

The Purpose Of An Accessory Dwelling Unit (ADU)

An accessory dwelling unit (ADU) is a small, habitable building place on a property that has pre-existing, main structures. The purpose of an ADU varies for one to the other. But, as many of the sobriquets - granny flat, mother-in-law-apartments, guest houses, etc. -...

Why Homeowners Need Guesthouses

Homeowners turn to a general contractor to help them build an accessory dwelling unit (ADU). More and more homeowners are seeing the value of adding guesthouses, often called accessory dwelling units (ADUs), practically in California where the property is often...

Money Saving Tips for Your Home Remodel

Save Big on Your Home Remodel Everyone, from Millennials to millionaires, is always looking to save money. While a home remodel is not always cheap, homeowners can get reap a lot of benefits of remodeling their property. Even if money isn’t an issue and there is no...

The Right Choice

Contact us now and schedule a free consultation.

Reach Us

Schedule your free consultation with us today.

21118 Vanowen St, Canoga Park, California 91303

Leave A Message