Developing Long Island:
Harmony Healthcare Long Island

Garden City, NY Following the acquisition of 400 Oak St., Harmony Healthcare Long Island (HHLI) relocated its administrative headquarters to a 20,000 s/f space within the building designed by TPG Architecture. The move presented a unique opportunity to create a modern, flexible environment that empowers its people to carry out the organization’s important mission. 

A preference for private offices defined HHLI’s previous space, but through interactive programming exercises, visits to vendor showrooms, and workshopping layouts in a temporary space, TPG identified how best to support HHLI’s workflow. A fresh, white palette with colorful, HHLI logo-inspired accents is complemented by warm, light wood tones. Glass partitions offer privacy while maintaining openness across individual workstations, private offices and phone booths, huddle rooms, and collaborative areas, fostering both teamwork and individual focus. The layout also includes a café and a boardroom.

Sustainability and individual wellness were key to the design and pursuit of Fitwel certification. Modernized HVAC and smart lighting systems enabled the integration of occupancy, daylight, and indoor air quality sensors to optimize energy use, airflow, and temperature control throughout the day. 

The courtyard at the center of the building is being activated with seating areas, gardening and zen spaces, and a water feature to create both visual and physical connections to nature in potentially high-stress or cognitively demanding moments. 

By redefining how its team works for the future, HHLI’s new administrative headquarters enables the non-profit to continue advancing its mission to provide accessible and compassionate healthcare to Nassau County. 

Project Info

Project Title: Harmony Healthcare Long Island office

Project Location: 400 Oak St., Garden City

Project Type: Office renovation

Number s/f: 20,000 s/f

Year Started: 2024

Date Completed: November 18, 2024

Project Team

Architect: TPG Architecture

General Contractor: Nucor Construction

Electrical Contractor: Vincon Electric Co., Inc.

Civil Engineer: Key Civil Engineering (Due Diligence ONLY)

MEP Engineer: Robert Derector Associates / Robert Derector Telecommunications

Structural Engineer: Avitz Engineering

Mechanical Contractor: East Bay Mechanical Corp

Plumbing: Universal Plumbing Inc.

Project Management: Cresa, Ron Zeccardi 

Real Estate Broker: Cresa, Ralph Benzakein

Lighting: Chelsea Lighting / Smart Engine WT 

Fire Alarms: Safeway Fire and Protection: A Pavion Company

HVAC: East Bay Mechanical Corp.

Flooring: JMC Floor Covering Inc.

Millwork: Wilsonart

Audio/Visual & Electronics: National Technology Group

Bath & Spa: TileBar

Fabrics: DFB (Fabric Wrapped Panel), Carnegie

Furniture: Waldners

Signage: Sir Speedy

Surfacing Materials: Caesarstone & Corian

Wallcoverings: Carnegie & Wolf Gordon

Window Treatments: Mecho Shade

Window Treatments: DFB Sales Inc.

Accessories: A. Liss & Company Inc.

Drywall and Ceilings: Streamstown Construction

Door Hardware: Kelly Bros.

Millwork: DRV4 Inc.