Looking for accessory dwelling unit construction cost in Des Moines, IA? Call AccessoryDwellingUnit Direct for a contact a provider — no obligation. Licensed adu builders serve Des Moines and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.

About this service

The amount you spend depends on the size of the unit, whether you are building from scratch or converting an existing structure, and the quality of your finish materials. Foundations, utility connections, and local labor rates also play a significant role. We provide exact pricing confirmed free on the call.

Frequently asked in Des Moines

What are the disadvantages of ADUs in Des Moines?

Potential drawbacks can include the initial construction costs and the impact on your existing yard space. You might also need to consider the additional utility costs and the complexities of zoning regulations. A local expert can help you navigate these concerns effectively in Des Moines.

How much does an ADU cost in Des Moines?

What are the rules for ADUs in Iowa?

Iowa's regulations for ADUs are often determined at the local level, with cities like Des Moines adopting their own ordinances. These rules typically address lot size, setbacks, parking, and integration with the main home. Local professionals are well-versed in Des Moines' specific requirements.

Is an ADU allowed in Des Moines?

This program is not applicable in Iowa. When you call, you can inquire about any current financing or incentive programs available for ADUs in Des Moines.

What are the benefits of adding an ADU in Des Moines?

The benefits include generating rental income, providing housing for family members, and increasing your property's overall value. An ADU can also offer a flexible space for guests or a dedicated home office. These advantages make an ADU a valuable addition to your Des Moines home.

Also serving nearby: Cedar Rapids · Omaha · Davenport · Lincoln · Independence

All cities in Iowa →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

210,381residents

2,386per sq mile

8ZIP codes served

Serving all of Des Moines — population 210,381; about 2,386 residents per square mile across 88.2 sq mi. ZIP codes covered include 50301, 50302, 50303, 50304, 50305, 50306, 50307, 50308.

Neighborhoods served in Des Moines: Downtown Des Moines, Drake Neighborhood, Sherman Hill, Waterbury, West Des Moines (adjacent areas), East Village — and every surrounding area.