The $35.77 Million Transformation: Inside 3 Huntington Quadrangle, Melville NY's Premier Corporate Hub
As of December 24, 2025, 3 Huntington Quadrangle in Melville, New York, stands as a premier example of a successful suburban office park revitalization, anchoring one of Long Island's most significant business corridors. This four-story, 408,000-square-foot Class A office complex has a dynamic history of ownership and a critical role in the region's professional landscape, housing some of the nation's largest corporate and healthcare entities.
The property's modern status is largely due to a strategic value-add renovation program and a significant real estate transaction in 2019. Previously acquired by The Treeline Companies, the building underwent extensive upgrades to correct years of deferred maintenance, transforming it from a struggling Class B asset into a highly competitive Class A corporate destination, ultimately leading to a major sale that solidified its renewed value in the Long Island market.
The Corporate History and $35.77 Million Sale Narrative
The history of 3 Huntington Quadrangle is a compelling case study in commercial real estate strategy, highlighting the significant capital required to reposition a large suburban office asset. The building, a key component of the larger Huntington Quadrangle office park, has seen several major ownership changes over the past decade, each marking a new chapter in its lifecycle.
From Deferred Maintenance to Class A Status: The Treeline Era
In December 2016, The Treeline Companies acquired 3 Huntington Quadrangle with a clear mission. The property was identified as a Class B asset suffering from deferred maintenance, which was causing high tenant turnover and vacancy. Treeline embarked on an aggressive capital improvement program to modernize the facility and attract a new wave of prestigious corporate tenants.
The renovations were comprehensive, focusing on transforming the tenant experience and the building’s overall aesthetic. Key improvements included entirely new lobbies, upgraded common areas, and state-of-the-art mechanical systems. This strategic investment successfully repositioned the property, making it competitive with the newest office spaces in the Melville and Route 110 corridor.
The KABR Group Acquisition: A Post-Renovation Milestone
The success of the renovation and repositioning strategy culminated in a major transaction on February 15, 2019, when the property was sold for $35.77 million. The buyer was a joint venture, with the KABR Group being the principal entity involved in the acquisition.
This sale price and the subsequent ownership change marked a significant milestone, confirming the successful execution of the value-add strategy. The KABR Group, as the new owner, inherited a revitalized, fully modernized corporate campus with a significantly improved tenant roster, poised for long-term stability in the Long Island business environment. The 408,000-square-foot complex, now a true Class A suburban office space, became a flagship asset for the new ownership.
Prestigious Tenant Roster and Topical Authority Entities
The success of 3 Huntington Quadrangle is best measured by the high-profile entities that call it home. The building's tenant roster is a testament to its prime location and the quality of its modern facilities, attracting major players across the healthcare, financial, and professional services sectors. This concentration of major corporations establishes the address as a critical point of topical authority in the region.
Key corporate and institutional tenants at 3 Huntington Quadrangle include:
- Northwell Health: One of New York State's largest healthcare providers, occupying significant space and cementing the building's role in the medical and administrative field.
- Santander Bank: A major global financial institution, utilizing the space for corporate and administrative functions, highlighting the financial sector's presence.
- Wellpoint: A prominent health insurance and managed care company, further solidifying the healthcare and insurance industry’s footprint.
- Catholic Health Services (CHS): Another major healthcare network, reinforcing the building's status as a hub for Long Island's essential services.
- Bartlett LLP: A law firm, representing the strong contingent of legal and professional services.
- Cloud Services Inc: A technology company, showcasing the diversity of sectors represented in the complex.
The presence of these major entities—spanning banking, healthcare, and professional services—underscores the building's strategic importance. It is not merely an office building; it is a vital nexus for Long Island's economy, providing essential services and high-value jobs for the surrounding communities in Melville, Huntington, and Farmingdale.
State-of-the-Art Amenities and Strategic Location
The extensive renovations undertaken by Treeline and maintained by the KABR Group have ensured that 3 Huntington Quadrangle offers a comprehensive suite of modern amenities designed to meet the demands of a contemporary corporate workforce. These features are a key factor in attracting and retaining the prestigious tenant roster.
The building's amenities and strategic features include:
- Full-Service Café: Providing on-site dining options, a crucial feature for a large corporate campus.
- Fitness Center: Offering tenants convenient access to health and wellness facilities.
- Conference Facilities: State-of-the-art meeting and conference rooms for large-scale corporate events and training.
- 24-Hour Security and Concierge: Ensuring a secure environment and a high level of tenant service.
- Ample Parking: With a capacity of 1,628 spaces and a generous ratio of 4 spaces per 1,000 square feet, parking is never an issue.
- Fiber Optic Connectivity: Multiple providers ensure high-speed, reliable internet service, essential for tech and financial tenants.
- Emergency Power Backup: Equipped with three 1100 KW generators, the building offers robust emergency backup power, a necessity for critical operations like those run by healthcare and banking tenants.
In addition to its internal features, the location of 3 Huntington Quadrangle is strategically advantageous. Situated in the heart of the Melville business district, it benefits from immediate access to major Long Island thoroughfares, including the Long Island Expressway (I-495) and Route 110. This prime location makes it easily accessible for employees and clients across Nassau and Suffolk counties, solidifying its reputation as a central hub for Long Island commerce.
The building’s continuous evolution, from its initial acquisition by Hines REIT to the successful value-add strategy by The Treeline Companies and its eventual sale to the KABR Group, reflects the enduring strength and strategic importance of the Route 110 corridor. The investment in modernization has paid off, creating a dynamic, amenity-rich environment that continues to attract and support major corporate entities, ensuring 3 Huntington Quadrangle remains a pillar of the Long Island economy for years to come.
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