Build an ADU (Accessory Dwelling Unit)

Building a custom ADU is typically a lengthy process due to city permitting and approval processes which can take over three months. We recommend all of our clients read thoroughly through our design and checklist process pages. Being fully prepared will make the process move much quicker.

We can build any type or style of ADU to match your home. Our ADU’s are all one of a kind, we do not build out of the box structures. They are designed to fit your needs specifically and can accomodate most areas throughout Utah. Contact us today to learn more about building and pricing Accessory Dwelling Units.

Our Offerings

  • ADU Design & Planning
  • Permitting & Approval
  • Custom Sizes & Design
  • Full-Service Design & Build

Design & Application Process

As Utah’s leader in custom ADU’s we help each of our clients navigate the complex process of receiving approval from the city and creating your ADU designs. We work with an expert team of designers and engineers to build beautiful ADU’s that fit your every need. The possibilities with BBDC are endless.


permit approval assistance

Allow us to help you with the necessary approvals before building your ADU. Receiving approval from the city is a complex process that takes months to complete if done correctly. Our team works directly with the city, gets the required permits, and helps with any special requirements in order to get your project started.

Complete ADU Design & Build

We are a design and build construction firm, we work with our clients form day one and see each project through to completion. We believe is creating beautiful buildings that standout among the rest. We have teams of expert architects, designers and engineers that help make any dream a reality.

Get a Quote: Build a Custom ADU

Phone: (385) 355-1357


Roosevelt ADU

This beautiful one bed one bath ADU was recently featured in the Salt Lake Tribune. This tiny home features a large living room and full size kitchen with a loft and plenty of storage.

We’ll Assess Your Property To See What Limitations the City Might Impose

Before you get started, we help determine everything that the city may require and any special permits for your area. You will know the process and timeline before we start.

We’ll Assist With The Build Permit Approval

Allow us to help you with the necessary approvals before building your ADU. We’ll cover it all!

  • We verify local codes
  • We submit all paperwork
  • We pull the permits
  • We even help with all the conditional use requirements

We take the guesswork out of building your project.


We’ll Design Your Dream ADU!

Our services remove the stress of designing your new ADU. Choose from one of our previous designs or build something unique. If you can dream it, we can make it.

Take your Property to a whole new level!

An accessory dwelling unit (ADU) is a second dwelling unit created on a lot with a house, attached to your existing house. It functions as a separate unit ideal for guests, home office, “mother-in-law apartment, “granny-flat”, craft room, kids play area, external dwelling, home for extended family, and many more. The possibility is endless. But the most exciting part of having an ADU is using it as an investment or an income generator. It can be a rental, place for live-in help, external dwelling for lease, and a boost for your property’s value!

Find out if your property qualifies for an ADU build.

Increase your property’s potential and make make money in your back yard!

A Construction Company You Can Trust

Let our expert team bring their expertise to your project. With over 10 years of experience building homes, renovations, and commercial projects in the Salt Lake valley and our combined 20 years of experience in the real estate and construction/renovation markets of Salt Lake City, we can walk you through every stage of your construction needs.

Built By Design Construction was voted Best of Utah 2019 for general contractors. 

TAKE THE FIRST STEP to getting your new ADU!