Looking for affordable accessory dwelling unit 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

Affordability in ADUs usually comes down to smart design choices and efficient use of existing square footage. Opting for standard finishes or building above a garage can help manage your budget more effectively than a custom luxury build. We focus on transparent planning to help you reach your goals. Exact pricing confirmed free on the call.

Frequently asked in Des Moines

What are the disadvantages of ADUs in Des Moines?

Potential downsides include the initial construction costs and the time involved in the planning and building phases. Ongoing maintenance is also a consideration. However, the benefits of increased living space and potential rental income are significant for homeowners in Des Moines.

How much does an ADU cost in Iowa?

What are the rules for ADUs in Iowa?

While Iowa encourages ADUs, local Des Moines ordinances will dictate specific requirements. These often include regulations on setbacks, size, and integration with existing structures. It's best to consult with local professionals to ensure compliance.

Is an ADU allowed in Des Moines?

Yes, ADUs are permitted in Des Moines, subject to the city's zoning and building codes. These regulations ensure that new units are safe and well-integrated into neighborhoods. We can help you understand what your property allows.

What affects ADU costs in Des Moines?

The size and complexity of your ADU's design are major cost drivers, along with the selection of construction materials and interior finishes. Site preparation, including utility hookups, can also add to the overall expense. Your detailed quote will break down these costs.

Can I add an ADU to my Des Moines property?

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: Drake Neighborhood, Sherman Hill, Waterbury, Valley Junction — and every surrounding area.