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

ADU Construction Estimates Done The Right Way

Do the estimates you receive from contractors really cover all your project needs? Do contractor’s estimates present a real picture or what they want you to see? Free estimates will not reflect all the information you need to evaluate when deciding on your project,...

Garage Conversion Cost in Los Angeles

Most people are amazed at how much a garage conversion costs in Los Angeles. We come across articles all the time that get the wrong impression about the actual cost of a garage conversion ADU. We want to make this clear and in the next few articles starting with this...

What an Open-Plan Addition Can Do for Your Old Home

Reinvent your old home by updating it to modern living standards. It’s no secret that modern families live differently from how they once did, even just a few years ago. As a result, older homes in established areas with boxed-in, individual rooms simply doesn’t cut...

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...

Remodeling Your Kitchen On A Budget

A kitchen is one of the most expensive areas during a house remodeling, making many homeowners forgo this renovation. Luckily, there are budget-friendly designs and themes you can use to remodel your kitchen. Having a low-cost kitchen renovation doesn't mean it won't...

Tips For Decorating A Granny Flat

Accessory dwelling units, or granny flats, are becoming very popular as a way for homeowners to maximize space and even make some extra money by renting them out. While there were government restrictions on granny flat construction for a long time, that is starting...

Complete Home Rebuild Case Study

Studio City Complete Home Rebuild - [Case Study] Complete Home Re-Builds, especially in Los Angeles, are always our favorite projects. Not because we do not enjoy a home addition, or a complete house remodel, but because it gives us the opportunity, with our client,...

Some Great Guest House Design Ideas to Brainstorm Over

Check out a few purposes for building a guest house on your property. Years ago, it was incredibly difficult to obtain a permit to add a guest house or convert your garage into a studio. Thanks to a new state law, California is now issuing homeowners permits to build...

ADU in Los Angeles: A Complete Guide for 2021

Are you a California homeowner considering building an Accessory Dwelling Unit? You might be wondering what an ADU is, if it’s the right investment for you, and what the steps are to constructing an income producing unit on your property. You know the saying: “There’s...

7 FAQs For Your Home Remodeling

7 FAQs your home remodeling contractor should answer before you hire them. When it comes to home remodeling or room additions, there is no magic solution. As homeowners, there is nothing we would appreciate more than having all of our upgrades be automatically done...

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