Cost of accessory dwelling unit

Looking for cost of accessory dwelling unit 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

The total price for an ADU depends on several moving parts, including the square footage, your foundation type, and local labor rates. Choosing high-end finishes or complex site prep will naturally increase the budget, while standard layouts help keep things manageable. 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 cost and the time commitment involved. Des Moines has specific zoning laws regarding ADUs, such as setbacks and lot coverage, that must be adhered to. You should also consider the impact on utilities and your existing yard space. A local pro can explain these.

How much does an ADU cost in Iowa?

The cost of an ADU in Iowa, including Des Moines, varies significantly based on its size, the quality of materials chosen, and the site's specific conditions. Factors like foundation work, utility connections, and design complexity play a large role. Getting a personalized quote from a local expert is the most reliable way to estimate cost.

What are the rules for ADUs in Des Moines?

Des Moines has specific ordinances governing accessory dwelling units, typically addressing aspects like minimum lot size, setbacks from property lines, and occupancy rules. These regulations aim to integrate ADUs smoothly into existing neighborhoods. A local professional will be knowledgeable about these specific Des Moines requirements.

Is an ADU allowed in Maryland?

This page focuses on Des Moines, Iowa. If you're in Maryland, ADU rules vary considerably by county and city, though many areas are becoming more permissive. It is crucial to consult with your local planning department or an ADU specialist familiar with Maryland's regulations.

What are the rules for ADU in California?

California has state laws that generally support ADU construction, but local cities like Fontana have their own specific regulations. These can include requirements for design, parking, and utility hookups. A professional can clarify how these California rules apply to your particular situation.

These programs often have income-based or project-specific requirements. When you speak with a local ADU professional, ask about any current funding opportunities they may know of.

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