Interior designer Brad Linard has dramatically reduced the price of his two adjacent Harlem brownstones from a combined $27 million — which would have smashed the record for most expensive house sold in the area — to $11.9 million.

Built in 1888, the next-door homes facing Mount Morris Park were originally part of a four-home family compound once owned by John Dwight, the baking soda mogul who started producing bicarbonate of soda in 1846 and whose company eventually became Arm & Hammer.

Combined, the homes could be transformed into an 18,000-square-foot, 50-foot-wide mansion.

The first home, at 32 Mount Morris Park West, is on the market for $7.95 million. It was originally built for Dwight’s daughter Clara and her husband, General Alexander Phoenix Ketchum, who had been a commander under Abraham Lincoln during the Civil War. The five-bedroom home is 7,000 square feet. It features an elevator, nine working fireplaces, nearly 13-foot ceilings, a staircase, a formal dining area and a chef’s kitchen that opens to a terrace overlooking the garden.

Linard and his late husband bought the townhouse for $1.55 million in 2005 and then gut-renovated it.

Next door, a similar — but unrenovated — home at 33 Mount Morris Park West is on the market for $3.95 million.

This townhouse was formerly owned by late famed dancer Loretta Abbott, one of the original founders of the Alvin Ailey Dance Company.

The 26½-foot-wide townhouse is 7,000 square feet and comes with high ceilings and original details like fireplaces, a staircase, wainscoting, moldings and ceiling rosettes.

Linard bought the home for $2.8 million in 2016, the year Abbott passed away.

Both homes are now listed by Scott Stewart and Cathy Fuerth of Corcoran.