Did you know that the construction of Accessory Dwelling Units has grown around 9% per year for the last decade in America?
ADUs are becoming super trendy because they add value and living space to a property. These structures can serve as a guest house, home office, or even a rental unit.
With the rise of ADUs and streamlined permit processes, more homeowners are considering adding one to their property. In this article, we’ll break down the expected timeline for ADU construction projects, from ADU design to completion.
ADU Design: One to Three Months
The first step in any ADU construction project is to design the structure. This can take anywhere from one to three months, depending on the complexity of the design and the professionals’ schedules. During this stage, you’ll work with an architect or designer to create a blueprint of your ADU that meets your needs and complies with local building codes.
You may also need to hire a structural engineer to ensure that the foundation and framing are sound.
ADU Permit: One to Three Months
Once you have your ADU design in hand, it’s time to get the necessary permits. This can take anywhere from one to three months, depending on your local requirements. You’ll need to submit your ADU plans to your local building department for review.
The department will verify that your plans meet all building codes and zoning regulations. If your plans get approved, you’ll receive a permit that allows you to begin construction.
Construction Planning: One to Two Months
Before you break ground on your ADU, you’ll need to do some construction planning. This process can take anywhere from one to two months, depending on your unique project.
You’ll have to hire a home builder and get any necessary permits for excavation, foundation work, and utility connections. You’ll also need to order materials and schedule inspections.
Detached ADU Construction: Three to Six Months
The length of time it takes to construct a detached ADU can vary depending on the size and difficulty of the project. In general, it takes around three to six months to build a detached ADU from start to finish.
During this time, your contractor will oversee the construction process. This includes excavation, foundation work, framing, roofing, electrical, plumbing, and HVAC.
Prefab ADU Construction: One to Three Months
One way to speed up the ADU construction process is to use a prefab ADU. Prefab ADUs get manufactured off-site and then transported to your property for installation. Since they’re built in a controlled factory environment, prefab ADUs can get constructed in a matter of weeks.
Once the prefab ADU arrives at your property, it can be installed in a matter of days.
This Is a General ADU Construction Timeline
Adding an ADU to your property can be a fabulous investment. Now you can understand the expected timeline for ADU construction projects before you start.
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