Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
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Frequently asked in Des Moines
What are the disadvantages of ADUs in Des Moines?
Disadvantages can include the initial construction costs and the potential impact on your yard space. You'll also want to consider how an ADU might affect your property taxes. A discussion with a pro can help you weigh these factors.
How much does an ADU cost in Des Moines?
What are the rules for ADUs in Iowa?
Iowa has state-level guidance on ADUs, but cities like Des Moines have their own specific zoning ordinances. These often address things like minimum lot size and accessory structure placement. The pros can guide you through these.
Is an ADU allowed in Des Moines?
Yes, accessory dwelling units are generally permitted in Des Moines, following state and local regulations. The specialists can confirm your property's eligibility and assist with the permit process.
What are the rules for ADU in Iowa?
Iowa law supports ADUs, with state recommendations on size and occupancy. Des Moines may have specific local rules regarding setbacks and parking requirements. A quick call to the experts can clarify these details.
Grant programs for ADUs are typically state or locally specific and can change frequently. While California has had such programs, Iowa and Des Moines may have different incentives. Ask the pros on your call about any available assistance.
Also serving nearby: Cedar Rapids · Omaha · Davenport · Lincoln · Independence
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
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: Waterfront, Sherman Hill, Drake Neighborhood, East Village, Beaverdale — and every surrounding area.
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