Looking for affordable accessory dwelling unit in Des Moines, IA? Call AccessoryDwellingUnit Pros 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 is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

About this service

Affordability in backyard homes often comes down to choosing efficient designs and standardized floor plans. By selecting a model that fits your existing utility footprint and requires minimal site excavation, you can keep your budget manageable. Exact pricing confirmed free on the call.

Frequently asked in Des Moines

What are the disadvantages of ADUs?

How much does an ADU cost in Massachusetts?

This service is for Iowa. ADU costs vary widely by location. For Massachusetts, you would need to consult local building professionals or authorities in that state. Costs are influenced by materials, size, and local labor rates, which differ significantly between states.

What are the rules for ADUs in California?

This service is for Iowa. ADU regulations differ greatly between states. If you're interested in California's rules, you'll need to consult with California state officials or ADU professionals in that specific region. Each state has its own legislative framework for accessory dwelling units.

Is ADU allowed in Maryland?

This service is for Iowa. For information on ADU allowances in Maryland, you should consult the local building department or ADU specialists within Maryland. Zoning laws and permitting processes are specific to each state and municipality.

This service is for Iowa. Such programs are generally not applicable outside of California. You should investigate any local or state incentives available for ADU projects in Des Moines.

What are the rules for ADU in California?

This service focuses on Iowa. If you need information on ADU rules in California, you must refer to California's state legislation and the specific city ordinances within California. Regulations are jurisdiction-dependent, so local expertise is key.

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, Weston Valley — and every surrounding area.