In 1857 Obsidian House was built by one of New York’s most prominent families—the esteemed Joneses, from which celebrated author Edith Wharton was descended—making it one of the oldest cast iron buildings in New York City.

Designed in the Italianate style, the building’s ornate façade is split into four bays at each story and punctuated by fluted Corinthian columns. At the time of its construction, the building was considered one of the most impressive structures in lower Manhattan, and it helped give rise to the common trope: "Keeping up with the Joneses." After the Jones family sold the building in 1889, it became the commercial home for a number of prominent merchants. Today, Obsidian House has reemerged and is once again one of Tribeca’s most striking residences.

In 2015 the cast iron building at 93 Reade Street was reimagined by the acclaimed architecture firm WORKac as Obsidian House. Named for its unusual extruded roofline—which evokes jagged forms of volcanic rock—Obsidian House is home to three spacious loft residences and one exceptional three story penthouse. From the external restoration to its modern interiors, Obsidian House has been updated in a manner that honors the building’s rich history, while also offering a creative interpretation of contemporary luxury.

A Modern Reinterpretation

Michael Hansmeyer, a new age digital sculptor, was commissioned to create a modern representation of the façade's missing column capitals. Using innovative digital algorithmic techniques, he created a visually stimulating futuristic form with millions of facets.


The inventive team at WORKac—the architecture firm that designed Diane von Furstenberg’s flagship store and private penthouse (the "Living Cube"), the New York offices of renowned advertising firm Wieden+Kennedy, and an addition to the Blaffer Art Museum in Houston, Texas—have applied their singular, unique vision to the penthouse at Obsidian House.

Spanning three floors that flow seamlessly from one to the next, the penthouse features five spacious bedrooms, a sitting room, an open living dining room, and an expansive rooftop terrace with a spa tub. The dramatic double height living room opens directly onto this intimate terrace, creating a fluid space for indoor and outdoor entertaining. The penthouse’s signature pleated ceilings evoke natural, organic shapes, while still feeling thoroughly modern and urban—a rare balance that distinguishes WORKac’s designs.

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Curbed - Friday, January 22, 2016

Curbed mapped a list of New York City developments that will welcome residents in 2016, Obsidian House was included.

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NY YIMBY - Tuesday, November 24, 2015

The city's second-oldest cast iron building has emerged from its scaffolding at93 Reade Street in Tribeca. The six-story structure, named Obsidian House is close to completion.

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Robb Report Singapore - Thursday, November 12, 2015

Reimagined by WORKac, Obsidian House's crowning glory is the five-bedroom penthouse with irresistible interiors.

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Surface Magazine - Wednesday, July 01, 2015

Andraos speaks about her respective projects at Columbia and her New York-based firm, WorkAC. They are currently working on their first residential development, Obsidian House.

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The New York Times - Wednesday, June 03, 2015

The 30-Minute Interview with Amale Andraos

The New York Times conducted a 30 minute interview with Amale Andraos, where she describes working with Knightsbridge Properties on Obsidian House.

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The New York Post - Thursday, April 16, 2015

Spring Residential Round Up

The New York Post featured Obsidian House in their Spring new development round up.

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Curbed NY - Thursday, April 09, 2015

Sales Have Been Announced at Obsidian House

Condos in the City's second-oldest cast iron building have hit the market at Obsidian House, 93 Reade Street.

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BuzzBuzzHome - Tuesday, April 07, 2015

Obsidian House

New renderings were released for Knightsbridge Properties’ Obsidian House at 93 Reade Street in Tribeca.

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Curbed NY - Friday, March 13, 2015

The 41 New Developments Hitting The Market This Spring

Obsidian House was included in the Spring new development map by Curbed.

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