Guiding You from Eligibility Through Completion

Designing and building an Accessory Dwelling Unit is a long, complex process. From initial contact to final inspection, most of our ADU projects are completed in under one year. Here’s the ADU Design/Build process we follow:


Find Out If You Are Eligible

The first step is to find out if your property qualifies for an ADU. Contact your city or county planning department to find out if you can add an ADU to your property, the maximum square footage allowed, and the property setbacks in place that will influence where you can place an ADU.


Design Your Building

The next step is to reach out to Backyard Unlimited for a design consultation. Our team will work with you to plan the style, layout, and features you’d like to see in your new structure.



Once we create a design you like, we will provide you with a detailed quote. If you decide to move forward with your project, you will sign the contract and make a down payment.


Drafting & Engineering

Once we have a signed contract, we take our initial design and create the drafts and engineer-approved drawings we will need for the permitting process. Depending on the complexity of the structure, this step can take 1-2 months to complete.


Permit Submittal

After the drafts have been completed, our team will apply for building permits with your local planning office. Each project varies with the amount of time it takes to receive permits, but you can generally plan for 1-2 months before we receive approval.


Site Preparation

Once we get the permits in hand, we can start preparing your property for the ADU. This often includes grading the land and installing the foundation, as well as any utility work. During this time, the structure will be in production, so it will be ready to be installed once the site prep is completed.


Installing the Structure

Since our Accessory Dwelling Units are prefabricated in a factory setting, installing the structure on your property is as simple as assembling the structural components. At the end of this step, the exterior and roof are finished, while the interior is rough framed.


Finishing the Interior

Finishing the interior of your ADU includes electrical and plumbing work, following by installing drywall. Once this is completed, our team handles the painting, trim, flooring, installing fixtures, and everything else that needs to happen to make the structure livable.


Project Completion

All that’s left is to pass the final inspection, receive the certification of occupancy, move in furniture, and enjoy your new Accessory Dwelling Unit!

Get a Quote

Interested in adding an Accessory Dwelling Unit to your property? Contact us for an initial consultation.

Get a Quote