- NYC’s Largest Office-to-Residential Conversion
- Converted 480,000 Square Feet of Office Space
- 20,000 Metric Tons of CO2 Saved
- Exceeds Local 2030 Energy Performance Requirements
- 30 Stories, 588 Apartment Units
- 30,000 Square Feet of Amenities
Like other North American cities grappling with the rise of remote and hybrid work, New York City has a glut of unused and aging office buildings. It also suffers from a lack of attainable housing. Office-to-residential conversions can be a viable solution to both problems: It’s a way to add new value to office space that would otherwise go into default, and it adds badly needed residential real estate in neighborhoods where land is scarce.
Recognizing New York’s housing shortage and its empty office inventory, Vanbarton Group engaged Gensler to convert an aging downtown office building into a premier residential building. The 588-unit building includes a mix of studios and one- and two-bedroom market-rate apartments with robust amenities such as a gym, coworking space, lounges, and a bowling alley. We also added five new floors atop the existing 24-story tower, while retrofitting the building’s existing curtain wall and installing additional insulation and double-pane, operable windows for better performance.
The Pearl House conversion has created 588 apartments and nearly 40,000 square feet of amenity spaces in the heart of the city — activating the ground floor to add more amenities for the new residents and vibrancy to the neighborhood. By reusing the existing structure, we saved an estimated 20,000 metric tons of embodied carbon in comparison to constructing a new ground-up building using conventional concrete construction. The building envelope now exceeds local 2030 energy performance requirements.
![A large living room with a large kitchen and dining area.](https://static1.gensler.com/uploads/image/92620/project-pearl%20House_20_2000x1125_1719440981.jpg)
![A large room with a large chandelier and a couch.](https://static1.gensler.com/uploads/image/92608/project-pearl%20House_01_2000x1125_1719427535.jpg)
![A room with a table and chairs.](https://static2.gensler.com/uploads/image/92621/project-pearl%20House_02_2000x1125_1719442001.jpg)
![A swimming pool in a room.](https://static2.gensler.com/uploads/image/92622/project-pearl%20House_03_2000x1125_1719442027.jpg)
![A room with a tv and a large screen.](https://static1.gensler.com/uploads/image/92623/project-pearl%20House_05_2000x1125_1719442044.jpg)
![A living room with a large television.](https://static1.gensler.com/uploads/image/92624/project-pearl%20House_06_2000x1125_1719442068.jpg)
![A room with a large screen and chairs and a table with a tv.](https://static2.gensler.com/uploads/image/92625/project-pearl%20House_12_2000x1125_1719442080.jpg)
![A living room with a large fireplace.](https://static1.gensler.com/uploads/image/92626/project-pearl%20House_07_2000x1125_1719442103.jpg)
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Forbes explored ideas to deliver housing in urban areas. The article featured Gensler’s Conversions+ solution and noted the firm is currently transforming over 3.7 million square feet of real estate in New York City to add more than 4,800 housing units.
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Urban Land Institute published insights on the best candidates for converting office buildings to residential, noting a scoring criterion developed by Gensler for evaluating suitability to conversion. Gensler’s Steven Paynter contributed to the report.
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The Real Deal profiled Gensler’s office-to-residential conversions, including Pearl House, Franklin Tower, and the upcoming conversion of Pfizer’s former headquarters. Steven Paynter and Robert Fuller discussed the impact of our building analysis tool.
![1 St. Clair West amenity space with view](https://static2.gensler.com/uploads/image/75646/01_1SCW_1024x576_1653423811.jpg)
1 St. Clair West
![One Franklin Tower rooftop](https://static2.gensler.com/uploads/image/75633/6_One-Franklin-Tower_2000px_1652993257_1024x576_1653413114.jpeg)
Franklin Tower
![The Residences at Rivermark building exterior](https://static1.gensler.com/uploads/image/88944/project-the-residences-at-rivermark-2023-1024x576_1700175323.jpg)
The Residences at Rivermark
![A building with glass windows.](https://static2.gensler.com/uploads/image/70503/135-West-50th-Street_1_1628264922.jpg)
135 West 50th Street
![The Landmark residential building in Los Angeles](https://static1.gensler.com/uploads/image/86975/project-the-landmark-1024x576_1691178990.jpg)
The Landmark
![Holliday Street residential building street view rendering](https://static1.gensler.com/uploads/image/89817/project-holliday-street-2024-1024x576_1705079812.jpg)
Holliday Street
![Esperson amenity space rendering](https://static2.gensler.com/uploads/image/78334/project-esperson-amenity-space-1024x576_1666390613.jpg)
Esperson 17th Level Amenity Space
![A group of tall buildings.](https://static2.gensler.com/uploads/image/68617/one-post-office-square-01-2000x_1564011671.jpg)
One Post Office Square
![CSULB Parkside North Residence Hall](https://static1.gensler.com/uploads/image/75038/project-CSULB-Parkside-North-Residence-Hall-1024x576_1650397102.jpg)
CSULB Parkside North Residence Hall and Housing Administration Building
![A building with a pool and trees.](https://static2.gensler.com/uploads/image/94898/NYC-Boston-O2R-PearlHouse-HERO-1024px_1731368527.jpg)
Office-to-Residential Conversions: What Boston Can Learn From New York’s Momentum
![A high angle view of a building.](https://static1.gensler.com/uploads/image/94272/PerpetualAsset-blog_Hero_1024px_1727219566.jpg)
The Perpetual Asset: Design for an Evolving Market
![A kitchen with a dining table.](https://static2.gensler.com/uploads/image/92472/Rivermark-fedconversions-1024px_1718741525.jpg)
Navigating Federal Resources for Office-to-Residential Conversion
![A bedroom with a bed and chairs.](https://static2.gensler.com/uploads/image/92371/PearlHouse-videoHero-1024px_1718148132.jpg)
Pearl House: Explore the Transformation of New York’s Largest Office-to-Residential Conversion to Date
![The Residences at Rivermark, Baton Rouge, Louisiana — Interior view of one of the 168 converted residential units.](https://static1.gensler.com/uploads/image/90729/office-to-residential-1024x576_1710453097.jpg)
Office to Residential Services
![A group of people sitting at tables in a courtyard.](https://static2.gensler.com/uploads/image/88974/OfficetoAnything-601Lex-HERO-1024_1700251724.jpg)
Office-to-Everything: A New Path for Revitalizing Downtowns
![A group of people in a room with a large window.](https://static2.gensler.com/uploads/image/75980/1StClairWest-Hero-1024px_1655319350.jpg)
What We’ve Learned by Assessing More Than 1,300 Potential Office-to-Residential Conversions
![1 St. Clair West rooftop rendering](https://static2.gensler.com/uploads/image/87685/podcast-230912-office-to-residential-1-st-clair-west-1024x576_1694558942.jpg)
Office-to-Residential Conversions: Mandates, Myths, and Possibilities
![Aerial view of Boston](https://static1.gensler.com/uploads/image/86783/Boston_aerial_1024_1689638568.jpg)
From Pilots to Policy: Exploring Office-to-Residential Conversions in Boston
![People sitting at tables in a building.](https://static1.gensler.com/uploads/image/81036/post-office-to-senior-living-conversions-hero_1677621642.jpg)
An Opportunity to Unlock Value for Underutilized Assets: Office Conversions for Senior Living
![A large building with many windows.](https://static2.gensler.com/uploads/image/80943/1_St_Clair_West_1024_1676931340.jpg)
How Office-to-Residential Conversions Could Revitalize Downtown San Francisco
![One Franklin Tower balconies](https://static2.gensler.com/uploads/image/80375/UnlockingOfficetoResi-Franklin_1024px_1674768706.jpg)