A 174-year-old Brooklyn Heights mansion that was once deemed a “derelict eyesore” the city partly tore down nearly two decades ago is hitting the market, paired with the carriage house next door, for a combined $20.99 million, Gimme Shelter can reveal.

The 1852 Greek Revival corner house at 1 Monroe Place, in New York City’s first historic district, is listed at $14.99 million. The three-story carriage house at 94 Clark St. is asking $6 million. 

Serhant’s Mallory and Brandon Bogard, a husband-and-wife team, have the listings.

Before a buyer moves in, the public gets a look. The mansion is hosting this year’s Brooklyn Heights Designer Showhouse, the fifth edition of the Brooklyn Heights Association’s biennial fundraiser, which runs through Nov. 1. Nineteen design studios took over the rooms, giving them a playful, sometimes quirky retro spin. 

Participants include Jess and Jonathan Nahon of Sugarhouse Design & Architecture, Hannah Blumenthal of Studio Olivine, Poonam Khanna of Unionworks and Isy Runsewe of Isy’s Interiors.

The seller is developer Margaret Streicker, whose firm paid $1.25 million in cash for the wrecked properties in 2010.

“When I acquired 1 Monroe and 94 Clark Street, the properties were vacant and partially demolished,” Streicker tells Gimme Shelter.

She described the rebuild as a regulatory puzzle involving landmarks rules, shifting building codes, the pandemic and the buildings’ tangled past. 

“We unlocked it with a multi-phase, multi-year strategy and rebuilt One Monroe from the ground up, brick by brick,” she said.

Streicker, a Republican, is the daughter of the late real estate mogul John H. Streicker. She ran for Congress in Connecticut in 2020 and lost to longtime Democratic Rep. Rosa DeLauro. She also redeveloped 86 Bedford St., the former Chumley’s speakeasy in the West Village, now home to Catch Hospitality Group’s hard-to-book steakhouse The Eighty Six.

The Monroe Place house had been rotting for years. In 2008, the Buildings Department declared it structurally unsound, forced out its last three rent-stabilized tenants and lopped off its upper floors. The owner at the time sued to block a full teardown. A court tossed the suit in 2010, and the property sold to Streicker’s firm months later. Lingering claims from the displaced tenants dragged out the rebuild.

NV Design Architecture, which handled the restoration, says on its website the job ran from 2016 to 2026 and that masonry, woodwork and ornament had to be re-created from a “limited collection of historic photographs and archival documentation.”

“As we have been preparing it for market, people have been commenting on what an amazing milestone it is to bring the home back to life. It’s important for the neighborhood,” Mallory Bogard said.

The five-story, roughly 7,200-square-foot mansion has a red brick facade, oversized bay windows, a stoop and a mansard roof. Inside are seven bedrooms, seven full baths and four powder rooms, plus an elevator, multiple fireplaces, wide-plank hickory floors, a marble chef’s kitchen and a full-floor primary suite with its own gym. 

There’s also a wine cellar, wet bar, playroom and home office, along with two garden-level studios, each with a kitchen, full bath and private entrance. Outside, there’s 1,100 square feet of space plus a roof terrace with a gas grill and sweeping views.

The carriage house, also built in 1852 and fully renovated, adds 2,100 square feet with three bedrooms, three and a half baths, a skylit kitchen, a gas fireplace and a home office. The third floor is a primary suite with a spa-style bath, and the basement holds a wine cellar, laundry and media room. A terrace and roof deck add another 800 square feet outdoors.

Marketed together as the Monroe Place Estates, the pair could work as a family compound or a live-work setup, according to the listing.