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.
About this service
A contractor oversees the physical build, managing the subcontractors, materials, and daily construction progress. They are responsible for making sure the structure is built according to the approved plans and local safety standards. You need a contractor when you have your designs finalized and are ready for the actual building phase to begin. They act as the primary point of contact for all site activity.
Frequently asked in Aurora
What are the rules for ADUs in Aurora?
How much does an ADU cost in Illinois?
What are the disadvantages of ADUs?
Potential disadvantages of ADUs include the upfront construction costs, possible increases in utility bills, and the necessity of complying with local zoning and building regulations. You'll also need to consider the impact on your existing yard space. Consulting with a local expert is advisable.
Can I get advice on ADU design in Aurora?
What permits are needed for an ADU in Aurora?
Permits for an ADU in Aurora typically include building permits, zoning approval, and potentially separate permits for electrical and plumbing work. The exact requirements are determined by the City of Aurora's building department. A local contractor will manage this process for you.
How does an ADU affect my property taxes in Aurora?
Adding an ADU generally increases your property's assessed value, which can lead to higher property taxes. The extent of this increase depends on the ADU's size and features. Understanding this potential financial impact is an important part of your ADU planning.
Also serving nearby: Naperville · Joliet · Elgin · Chicago · Waukegan
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Aurora — population 177,563; about 3,941 residents per square mile across 45.1 sq mi. ZIP codes covered include 60502, 60503, 60504, 60505, 60506, 60507, 60568, 60569.
Neighborhoods served in Aurora: Oakhaven, Meadow Lakes, Barton Creek, Fox Chase, Waubonsee — and every surrounding area.
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