Fir Tree Partners Offices New York City, Manhattan private investment firm design, NYC architecture photos

Fir Tree Partners New York City

June 21, 2021

Fir Tree Partners Offices Manhattan

Design: Kostow Greenwood Architects

Location: 55 W 46th Street – 28th Floor, New York City, New York City, NY, USA

Fir Tree Partners Offices, 55 W 46th Street, NY

Fir Tree Partners New York Offices

Size: 35,000 sqft


Fir Tree Partners is a New York City based, private investment firm that invests worldwide in public and private companies, real estate and sovereign debt, managing assets on behalf of leading endowments, foundations, pension funds and sovereign wealth funds.

Fir Tree Partners Offices, 55 W 46th Street, NY

Founder and now Chairman Emeritus, Jeff Tannenbaum, established Fir Tree Partners in 1994 and immediately distinguished the company by establishing a work and life culture respectful of people and their work environment. What would become known as a “sustainability mission” was at the time, an innovative approach to raise the standards on workplace design for the benefit of the employees.

Fir Tree Partners engaged Kostow Greenwood Architects for four separate office designs beginning in 1999 (NYC – 535 Fifth Ave; NYC – 505 Fifth Ave; Miami; NYC – 55 W 46th) and through incremental and determined decisions, has proven that the relationship-focused financial industry can thrive in a people-centric office designed with the highest standards of wellness.

Fir Tree Partners Offices, 55 W 46th Street, NY

As a company, Fir Tree Partners is committed to environmentally responsible design that conserves energy and reduces impact on our natural resources. This project was designed to exceed the LEED Silver standard in terms of sustainably sourced materials and MEP systems and controls. Further, in order to support a healthy and productive workplace, many concepts of The WELL Building Standard were incorporated including: improved air quality, drinking water and nourishment, access to natural lighting and lighting control, acoustical and thermal comfort, and ergonomic seating and work-stations.

Fir Tree Partners Offices, 55 W 46th Street, NY

Design Challenges

Abiding by an “eco scorecard” while identifying construction and design components that meet industry code and serve the function and purpose of the workplace environment.

Fir Tree Partners Offices New York City

Defying the industry assumption that incorporating sustainable elements into corporate design is costly, Fir Tree Partners’ directive to Kostow Greenwood Architects was to identify sustainable solutions within an established budget and to raise the awareness level among employees as to the reasoning behind the design elements.

Repurposing of existing and in good condition furniture, as well as other notable elements from the previous NYC office location was a driving principle to reducing waste. The client’s now famous directive that “Not one thing goes into a landfill” guided several decisions.

Fir Tree Partners Offices New York City

Design Details


• All Architectural Materials and Furniture were specified for low VOC, Particulate Matter, Inorganic Gases and Radon content as well as Fundamental Material Safety: Asbestos, Mercury and Lead Restriction
• Smoking Ban: No smoking indoors or within 25 ft of the exterior entrance
• Ventilation Design: Complies with all requirements set forth in ASHRAE 62.1-2013
• Ventilation Balancing: After substantial completion the Ventilation System was balanced
• Construction Pollution Management was enforced throughout the project
• Building Entryway is Air Sealed
• Fir Tree Partners has a Cleaning Protocol that incorporates Natural Products
• No Pesticides are allowed


• All drinking water is filtered for sediment, microorganisms, dissolved metals, organic pollutants
• Water is periodically tested and system is maintained

Fir Tree Partners Offices New York City


• Fresh fruits and vegetables as well as healthy snacks are provided on a regular basis
• High calorie juices, snacks and heavily processed foods are not provided
• Nutritional information is provided
• Hand washing supplies, clean cutting surfaces and proper cold storage facilities are provided
• Cafe and Break out Areas are designed with optimum light and convivial spaces

Fir Tree Partners Offices, 55 W 46th Street, NY


• Lighting is designed with criteria with a focus on visual acuity, as well as brightness management with minimum glare
• Window shades are provided to manage daylight and heat loads
• Hi Color Rendering Index lamps specified
• Work surfaces are designed for low reflectivity
• All offices and workstations are provided with natural daylight

Fir Tree Partners Offices New York City


• The building has a gym open to all occupants, with Cardiorespiratory and Muscle Strengthening Equipment
• Bicycle Storage is provided in the building
• All workstations are Height Adjustable enabling working while standing or sitting


• The workspace is 100% Accessible
• Acoustics are designed to minimize sound transmission within open areas as well as from Conference Rooms and Offices to Open Areas
• Several Quiet Rooms and a Wellness Room are designed for comfort and privacy


• The space was designed to be visually pleasing with neutral and warm color accents.
• Live plants were incorporated into all open and shared spaces

Fir Tree Partners Offices New York City

Design Solutions


• Furniture and materials from the existing space were re-used, re-cycled or properly disposed of


• A “Daylighting System” was incorporated to minimize the use of electrical lights when daylight is adequate


• Repurposed wood was used to construct the table and cabinetry in the Cafe

Fir Tree Partners Offices New York City

Fir Tree Partners NYC – Building Information

Design Team
Architecture: Kostow Greenwood Architects
Interior Architecture: Kostow Greenwood Architects
MEP/FP Engineer: Jaros, Baum and Bolles
Lighting Design: Jaros, Baum and Bolles
Acoustician: Longman Lindsey
Structural Engineer: Hage Engineering
Contractor: Structure Tone
Expeditor: Brookbridge
Audio / Visual Systems: Spectra Audio Design
Kitchen Consultant: Jacobs-Dolan-Beer
Plant Design: The Sill

Project Team
Project Manager: TKO Project Management
Contractor: Structure Tone
Furniture Dealer: WB Wood

Credit for Photography: Adrian Wilson

Fir Tree Partners Offices New York City images / information received 210621 from Kostow Greenwood Architects NY

Location: 55 W 46th Street, New York City, USA

New York City Architecture

Contemporary New York Buildings

Manhattan Architectural Designs – chronological list

New York Architecture News

Amant art campus, East Williamsburg, Brooklyn, NY, USA
Design: SO–IL
Amant art campus, East Williamsburg, Brooklyn NYC
photograph Courtesy the Amant Foundation
Amant art campus, East Williamsburg, Brooklyn

The Midtown Viaduct, Manhattan
Architecture: DXA Studio
Midtown Viaduct Manhattan, New York City
image Courtesy architects
Midtown Viaduct Manhattan Design

Il Makiage pavilion
Design: Zaha Hadid Architects
Il Makiage Pavilion in New York
photograph : Paul Warchol
Il Makiage pavilion by Zaha Hadid

45 Park Place, Tribeca, Lower Manhattan
Design: SOMA Architects ; AOR: Ismael Leyva
45 Park Place New York City building
rendering : Williams New York
45 Park Place Tower

New York Architect

New York City Architecture Tours by e-architect

American Architecture Links : links

Comments for the Fir Tree Partners Offices New York City building design by ) architects, NY, USA, page welcome