White house

We’re An Award Winning Remodeling Company

DSM home Award

Types of Second Floor

Second story additions vary in scope and size, depending on your home size, budget, and the amount of additional space you require

  • Bathroom Remodeling

    Partial-Story Addition

    Partial second-story additions are ideal for those who need a smaller amount of space in the form of one or two extra rooms and a bathroom.

  • Bathroom Expansions

    Full Second Story Addition

    A full second-story addition matches the size of the first floor and doubles the house’s size, offering space for multiple rooms, bathrooms, and living areas.

  • Bathroom Additions

    Second Story Addition to Your Garage

    A second-story addition to your garage adds valuable space that may be used as an office, bedroom, or additional dwelling unit for family or rental income.

Benefits of a Second Story Addition

Second story additions are a great way to add value to your life and home. They have many benefits:

  • 01

    Double your living area’s square footage with more bedrooms, bathrooms, offices, recreational areas and balconies

  • 02

    Because you’re expanding vertically, you won’t have to sacrifice valuable yard space

  • 03

    Immediately increase your home’s resale value

  • 04

    Gain the extra living space you need without having to sell your home and relocate elsewhere

  • 05

    Enhance your home’s curb appeal with a facade facelift

  • 06

    Add customized living areas your home currently lacks, like a rec room, extra bathroom, hobby room, or bedroom/s

  • 07

    Avoid a depreciating house market and costly fees when selling and transferring homeownership

Building Team

Why Our Clients Think We Are The Best Second Story Contractor in Des Moines, IA

Attention To Deal

Attention To Deal

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

Expert Team

Expert Team

From talent designers to expert builders, our professional team achieves superior design builds that combine functionality and beauty, ensuring you’ll love your new addition.

Financing Options

Financing Options

Financing can make or break a project, which is why we offer different financing options to help complete your second story addition.



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.



As second-floor addition builders, we know zoning laws can be complicated; that’s why we arrange and organize the necessary permits for your custom project.

Track Record

Track Record

We have a track record of award-winning work, elevating our status to one of the finest second-floor addition builders in Des Moines.


How much does a second story addition cost in Des Moines?

The cost of a second story addition depends on its size and scope, as well as selections. Most additions that Zenith Design + Build undertake begin at around $70,000 - $75,000.

How Long Does it Take to Build a Second Story Addition?

Building a second-floor addition takes a few months, depending on the size of the addition, design features, and how much of the first-floor walls need fortifying.

Why does a 2nd-floor addition cost more per square foot than the 1st floor?

A second-floor addition costs more because, typically, the existing roof has to be removed entirely and replaced. The first floor may also require the installation of additional structures to ensure the second-floor addition is securely supported and connected to the first floor.

Contact Us

Start Your Dream Project With Us

Complete this form and our experts will get in touch shortly.

Let’s Talk


1492 NW 86th Street
Clive, IA 50325


(515) 518-8793


Mon-Sat: 8am - 5pm

Sun: 8am - 5pm