How Long Does It Take To Build an ADU in Omaha?

Building an Accessory Dwelling Unit (ADU) is one of the smartest ways to expand your space, create long-term value, and even generate rental income. But the outcome does not happen overnight.

We help homeowners move from overwhelmed to confident by guiding them through each step: from the first site plan to the final inspection. Here is a breakdown of the ADU timeline and what to expect at every stage.

1 - Site Plan and Design (4-5 weeks)

Every ADU project starts with a site plan. This begins with a professional land survey, which maps your property’s lot lines, easements, structures, and setback requirements. We coordinate this step early, and the resulting site plan typically comes back within a few days.

From there, your site plan is your foundation for everything else, including layout, design, and permitting. We use it to evaluate what fits on your lot and ensure your ADU can be built within local zoning guidelines.

We will help you navigate layout requirements and then connect you with trusted designers when needed. Most homeowners complete the design process in 4 to 5 weeks, depending on how quickly decisions are made.

Need help picking the right layout?

Read: How Do I Find an ADU Plan That Works for My Lot?

Pro Tip: Getting a site plan done early prevents costly surprises later, especially around setbacks and utility access.

2 - Permitting Process (3-9 weeks)

Omaha offers two distinct permitting paths for ADUs:

• Build by Right (3-4 weeks): If your property meets all zoning criteria, we can apply for a standard building permit. These are typically approved within 3 to 4 weeks.

• Conditional Use Permit (~2 months): If your property does not qualify by right, we will need to follow the city’s Conditional Use Permit (CUP) process. This includes public notice, Planning Board review, and City Council approval, typically adding up to 60 days. Here is a breakdown of the CUP process.

Not sure where your property falls? We review Omaha’s zoning maps and determine eligibility during our first free consultation.

3 - Construction (8-12 weeks)

Once we have permits in hand, we can break ground. Most ADU builds take 8 to 12 weeks, depending on scope, weather, and level of finish.

We coordinate every trade (from excavation and framing to mechanicals and finishes) so you are never left wondering what is next. We also manage utility coordination to ensure your ADU connects properly to water, sewer, and electricity, without disrupting your main home.

What Can Delay Your Project?

We are committed to a smooth, predictable build, but here are a few common factors that can extend your timeline:

• Decision delays (e.g., choosing layout or finishes)

• Permit resubmittals due to incomplete applications

• Weather, especially during excavation, foundation, or framing

• Utility or easement conflicts discovered during planning

  • This is why we start every project with a full review of your lot and zoning, so we can avoid surprises down the road.

From Vision to Reality. Without the Guesswork.

Depending on permit path, most ADU projects in Omaha to 4 to 6.5 months from start to finish. Clear communication, experienced guidance, and early planning are key to staying on track.

We walk you through every phase so you can focus on the why behind your ADU and leave the stress behind.

Schedule your free consultation and let’s take the first step toward bringing your ADU to life.