Approximately 20 percent of the US population lives in a multi-generational home. This means three or more generations share the same household. As assisted living costs continue to rise, older Americans are choosing to move in with their children. But instead of taking the spare bedroom upstairs, they’re moving into their own private in-law suite often called “Granny Flats” or Accessory Dwelling Units (ADU).
What Is a Granny Flat or ADU?
A Granny Flat or Accessory Dwelling Unit is a private space that is usually attached to or located on the same lot as the house. Many in-law suites or ADU’s are custom-built home additions, though converted garages, basements and stand-alone guest houses. These types of dwellings are also referred to as “mother-in-law” suites or granny flats.
ADU Laws in Los Angeles
In January of 2017, a new California state law took effect that encourages homeowners to build “granny flats” or ADU’s. These housing units gare also frequently called in-law suites, backyard homes, secondary units, garage apartments, and Accessory Dwelling Unit. Many homeowners still do not know that the City of Los Angeles has made it easier than ever to add an in-law suite or legal rental unit to a single-family home.
The new state law encourages the construction of accessory dwelling units because the City needs more housing. You can read the entire law at the California Legislative Information website by searching California AB 2299. Please be aware that the City may pass new laws that will affect ADU construction.
5 Things to Consider Before Building a Granny Flat
Building Codes: Check Your Local Building Codes which will determine what you can add to your ADU.
Location: As with real estate, Granny Flats are all about location, location, location. Depending on what’s allowed in your city, you could convert your garage, attic, basement or even your porch into a suite. For home additions, the best spot to build off of is an underused room on the first floor, ideally located near an existing bathroom.
Utilities: Separating your ADU utilities from the main house will allow you to switch them off if the space ever goes unoccupied for a long stretch of time.
Living Situation: Does your new guest have any special needs, such as wheelchair accessibility or grab bars for the bath? Your in-laws probably plan on aging in place once they move in. Be proactive and make sure their new accommodations are made to age with them.
Find a Certified Contractor: Look for a contractor who has built ADU’s and Granny Flats or in-law suites before and is a certified contractor. Contractors with this designation can be immensely helpful during the building process, providing advice and design ideas to make your in-law addition as functional as possible.
ADU Guidebook
There are contractors, builders, and planners ready to help you at every stage. This guidebook does not replace their services, but it does provide helpful advice, websites, phoneumbers, and office locations where your more specific questions can be answered. Because ADU rules can change, check the date of the guidebook in your hands (at the bottom of the page). More up-to-date information will be available from the City Departments of Planning and Building and Safety
FAQs
1. What is an accessory dwelling unit in Los Angeles?
An accessory dwelling unit los angeles is a small home built on the same lot as a main house. Many people call it an ADU or a granny flat. It has its own kitchen, bathroom, and entrance. Some are attached to the main house, while others sit in the backyard or come from a garage conversion.
2. Can I build an ADU on my property in Los Angeles?
In most cases, yes. Many homeowners in Los Angeles can build an ADU if their property meets local zoning rules. The city has made the process easier in recent years. You still need permits and must follow building codes before construction starts.
3. What is the easiest way to create an ADU granny flat?
For many homeowners, garage conversion is the simplest option. The main structure already exists, which can reduce the amount of construction work. You still need permits and upgrades for plumbing, electrical, and safety.
4. Do ADUs need separate utilities from the main house?
Not always. Some ADU granny flats share water, gas, and power with the main house. Others install separate meters. The best option depends on the design, the property layout, and how the space will be used.
5. How long does it take to build an ADU in Los Angeles?
The timeline can vary. Permits, design work, and construction all take time. In many cases, the process can take several months from planning to completion. Working with a contractor who knows ADU rules in Los Angeles can help avoid delays.
