Looking for accessory dwelling unit cost in Des Moines, IA? Call AccessoryDwellingUnit Solutions 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 several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

Pricing for an ADU is driven by the quality of finishes, the foundation type, and the complexity of your site’s terrain. Projects on flat, accessible lots are generally more affordable than those requiring significant grading or utility trenching. Exact pricing confirmed free on the call.

Frequently asked in Des Moines

What are the disadvantages of ADUs?

Potential disadvantages in Des Moines might include the initial construction investment and the time commitment for building. You should also consider how an ADU could affect your yard space or privacy. However, the added living space and potential rental income often make these concerns manageable.

How much does an ADU cost in Massachusetts?

What are the rules for ADUs in California?

California has its own ADU regulations. For Des Moines, Iowa, the rules are governed by local city ordinances. These typically address factors like lot coverage, setbacks from property lines, and the maximum size of an ADU. We can help you understand these specific local requirements.

Is ADU allowed in Maryland?

ADU regulations differ by location. In Des Moines, Iowa, ADUs are permitted under specific zoning guidelines. We can help you assess your property's suitability and the types of ADUs that comply with Des Moines' building codes.

What are the rules for ADU in California?

California has its own ADU legislation. In Des Moines, Iowa, the rules are set by the city. These often include details about the ADU's relationship to the primary residence and any required off-street parking. Understanding these local rules is vital for a smooth process.

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