Naperville mansion’s $7.5M sale is second-priciest transaction

Most-expensive sold at auction for $8.1M in November

Naperville Mansion Sells for $7.5M

A photo illustration of listing agent Lauren Dayton along with with 1112 Shamrock Court in Naperville (Sotheby’s International Real Estate, Getty)

A Naperville mansion that just changed hands is nipping at the heels of the priciest residential sale on record in the southwest suburb.

Thomas F. Harter Sr., a former Navistar executive, sold his 21,700-square-foot home at 1112 Shamrock Court for more than $7.5 million, or about $347 per square foot, the Chicago Tribune reported.

Lauren Dayton of Jameson Sotheby’s International Realty was the listing agent. The buyers’ identities have not been disclosed. 

It’s the second-highest residential transaction ever in Naperville, behind only the 9,300-square-foot home at 222 West Van Buren Avenue that sold for nearly $8.1 million via auction in November. 

The Shamrock Court mansion, listed at $10.5 million, was poised to smash records when it went under contract last month. Large price chops for homes in the eight-figures ballpark have been somewhat common since last year due to dwindling demand, driven by high-mortgage rates.

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The Tudor-style brick and limestone mansion, built in 2017 and situated on a 2.5-acre lot, has seven bedrooms, nine full bathrooms, three half bathrooms and eight fireplaces. The main floor features a great room with a towering stone fireplace and French doors, while the kitchen boasts dual islands, quartzite countertops and top-of-the-line appliances. 

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The first-floor primary bedroom suite exudes luxury with a custom turret, private sitting room and a spa-like bathroom featuring a Kohler computerized stone walk-in shower and heated floors.

The mansion also includes a hearth room and library. The lower level has a sports bar with custom leather and wood, a movie theater, a fitness room and a spa. The basement houses 3,000-bottle wine cellar behind iron doors, the outlet said.

The residence incurred a property tax bill of $83,939 in the 2022 tax year. 

—Quinn Donoghue