Cost to build accessory dwelling unit

Looking for cost to build accessory dwelling unit in Aurora, IL? Call AccessoryDwellingUnit Solutions for a contact a provider — no obligation. Licensed adu builders serve Aurora 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

When calculating the budget for a secondary unit, consider the costs for architectural design, permits, materials, and labor. Custom designs and high-end interior finishes will push your budget higher, while standardized layouts can keep costs more predictable. Exact pricing confirmed free on the call.

Frequently asked in Aurora

What are the disadvantages of ADUs in Aurora?

How much does an ADU cost in Illinois?

The cost to build an ADU in Illinois, including Aurora, varies greatly depending on size, design, and material selections. Factors like foundation requirements and the extent of necessary utility upgrades can also influence the price. For an accurate figure, it's best to obtain a personalized quote. This is provided without any commitment.

What are the rules for ADUs in Illinois?

Illinois has state building codes, but local municipalities like Aurora enforce their own zoning ordinances for ADUs. These often cover lot coverage, setbacks, parking, and occupancy requirements. Understanding these specific local rules is crucial for a smooth project. We can help you find the right advice.

Is an ADU allowed in Aurora?

What are the rules for ADUs in Aurora?

Aurora's ADU rules typically involve restrictions on size, required distances from property lines, and sometimes mandates for off-street parking. You'll need to consult your specific zoning district's regulations. Getting this information early prevents potential issues. Our service provides direct local guidance.

Are there grants for ADUs in Illinois?

While specific statewide grants for ADUs aren't common in Illinois, it's worth investigating any local incentives or financing programs available in the Aurora area. Some community development initiatives might offer support. Discussing your project with a professional can uncover these possibilities. We can arrange that.

Also serving nearby: Naperville · Joliet · Elgin · Chicago · Waukegan

All cities in Illinois →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

177,563residents

3,941per sq mile

8ZIP codes served

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: Fox Valley, Stonegate, Oakhaven, Meadow Lakes, Wheatlands — and every surrounding area.