A single-family home in Dundee that sold for $100 million tops the list of the most expensive residential real estate sales in Kane County in the past week.

In total, 79 residential real estate sales were recorded in the county over the past week, with an average price of $1.68 million. The average price per square foot was $1,135.

The prices in the list below include real estate sales where the title was recorded during the week of Sept. 29 even if the property sold earlier.

1. $100 million, single-family home at 612 Reese Avenue

The 1,872-square-foot single-family house at 612 Reese Avenue, East Dundee has been sold. The total purchase price was $100,000,000, $53,419 per square foot. The home was built in 1967. The home features five bedrooms. The deal was finalized on Sept. 22, 2025.

2. $1.69 million, single-family home at 1431 Abbott Drive

The sale of the single-family residence at 1431 Abbott Drive, Elgin has been finalized. The price was $1,690,000. The home was built in 1964 and has a living area of 5,400 square feet. The price per square foot ended up at $313. The transaction was completed on Sept. 15, 2025.

3. $1.56 million, condominium at 373 Cottrell Lane

The property at 373 Cottrell Lane, Aurora has new owners. The price was $1,556,000. The deal was closed on Sept. 19, 2025.

4. $1.27 million, single-family home at 5N481 Lakeview Circuit

The single-family home at 5N481 Lakeview Circuit, St Charles has new owners. The price was $1,265,000. The home was built in 2001 and has a living area of 4,753 square feet. The price per square foot ended up at $266. The home features four bedrooms and three bathrooms. The transaction was completed on Sept. 23, 2025.

5. $860,000, single-family home at 3578 Doral Drive

The single-family house at 3578 Doral Drive, Elgin has been sold. The total purchase price was $860,000. The deal was closed on Sept. 22, 2025.

6. $725,000, single-family home at 40W054 Margaret Mitchell Street

A sale has been finalized for the single-family home at 40W054 Margaret Mitchell Street, St Charles. The price was $725,000. The house was built in 1999 and the living area totals 3,252 square feet. The price per square foot ended up at $223. The deal was finalized on Sept. 23, 2025.

7. $700,000, single-family home at 6N185 Autumn Lane

The property at 6N185 Autumn Lane, St Charles has new owners. The price was $700,000. The single-family residence was built in 2009 and has a living area of 2,386 square feet. The price per square foot ended up at $293. The deal was finalized on Sept. 23, 2025.

8. $673,000, single-family home at 443 Prairie Ridge Lane

The sale of the single-family house at 443 Prairie Ridge Lane, North Aurora has been finalized. The price was $673,000. The transaction was completed on Sept. 15, 2025.

9. $656,500, single-family home at 921 Bennington Lane

The single-family home at 921 Bennington Lane, Hampshire has been sold. The total purchase price was $656,500. The deal was closed on Sept. 15, 2025.

10. $655,000, single-family home at 41W838 High Point Lane

A sale has been finalized for the single-family residence at 41W838 High Point Lane, Elburn. The price was $655,000. The house was built in 1985 and the living area totals 2,727 square feet. The price per square foot ended up at $240. The deal was closed on Sept. 22, 2025.