The house

We’re An Award Winning Remodeling Company

DSM home Award
What We Do

Types of ADUs We Build in Des Moines, IA

Over the past three years, Zenith has remodeled many properties marked by outstanding craftsmanship and functional design. From ADU construction plans to final interior finishes, our expert team will customize your additional dwelling unit for comfortable and convenient living. As custom ADU builders, we can build the following:

  • Bathroom Remodeling

    Detached ADUs

    Often called granny flats, these fully equipped stand-alone homes are found on the same property as the primary residence.

  • Bathroom Expansions

    Garage ADUs

    Built by adding an ADU above a garage or converting an existing garage into a residence.

  • Bathroom Additions

    Attached ADUs

    These living units are connected to the existing house and may have a separate or shared entrance.

  • Luxury Items

    Basement ADUs

    Also called mother-in-law units or secondary suites, these transform basements into legitimate living spaces.

  • Luxury Items

    Internal ADUs

    A portion of an existing home is partitioned off and renovated to become an ADU with a separate entrance.

  • Luxury Items

    Kitchen ADUs

    Transforming an Accessory Structure into an ADU building, with an ADU kitchen design that improves comfort and convenience.

Ready to start on your project?

Get your custom ADU cost estimate today!

Discuss My Project

Our Process

Our Custom ADU
Building Process

the process

Initial Consult

Meet with your Design Consultant to discuss the full scope of your project and your initial budget. In this meeting, your Design Consultant will get some initial measurements and a feel for your style.

Initial Design + Mood Board

Get an initial design with ideas for your addition.

Proposal Meeting

Get a written proposal for your addition to sign in order to move forward.

Design Selections

Your Design Consultant now chooses all of your selections for your project.

Finalize Design

Vote yay or nay to all of the selections we choose, and help select new items if needed.

Approve Design

Approve the design and we order everything for your project.


Meet your Project Manager and learn how to prep for construction.


Your addition project is underway and soon you will have the home of your dreams.

Why People Think We’re the Best ADU Builder in Des Moines, Iowa

Comprehensive design and build services executed by a talented team using superior materials define our award-winning approach. At Zenith Design + Build, we strive to provide high-quality service and premium housing solutions.



As ADU builders, we know zoning laws can be complicated. That’s why we arrange and organize the necessary permits for your custom project.

Increase The Resale Value

Contractor Relationships

We have excellent relationships with top suppliers who provide premium materials at competitive prices, ensuring you get the best deal for your ADU building.


Attention To Deal

Because we’re client-centric, our team establishes your lifestyle needs and ideal preferences, so they can provide the most suitable solutions for your ADU addition.


Expert Team

From talent designers to expert builders, our professional team achieves superior design builds that combine functionality and beauty for happy living.


Financing Options

Financing can make or break a project, which is why we offer different financing options to help complete your dream ADU building.



We take our work seriously and know that every good relationship is built on solid foundations. For us, that means being fully licensed and insured.

Track Record

Track Record

We have a track record of award-winning work, elevating our status to one of the finest accessory dwelling unit companies in Des Moines.

ADU Construction FAQ

What is ADU construction?

Also called a backyard cottage, in-law apartments, and granny flats, ADU additions are separate residential buildings that occupy the same lot as a primary residence. They are an innovative and affordable housing solution.

Can I build an ADU on my property in Des Moines, IA?

Building an accessory dwelling unit is allowed in Des Moines so long as it complies with zoning code requirements in terms of height, design, parking, and occupancy. We’ll take care of acquiring any relevant permits on your behalf.

How much does it cost to build an ADU in Des Moines, IA?

The average cost to build an ADU is between $200 - $300 per square foot but can vary greatly depending on size, materials, and finishes. Send us your specifications, and we’ll gladly provide you with a detailed quote for your project.

How much does an ADU increase property value?

ADU additions expand a house’s square footage, making it more spacious, and therefore increasing its value. If rented out, it may provide additional income too. The exact increase in property value is dependent on size and location.

Contact Us

Start Your Dream Project With Us

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Let’s Talk


1492 NW 86th Street
Clive, IA 50325


(515) 219-7726


Mon-Sat: 8am - 5pm

Sun: 8am - 5pm