111–115 Fifth Avenue

111–115 Fifth Avenue is a full-block, Class A office property positioned in the heart of Manhattan’s Flatiron District, offering a rare combination of scale, frontage, and institutional ownership in one of Midtown South’s most consistently demanded submarkets. The building spans the entire Fifth Avenue blockfront between East 18th Street and East 19th Street, placing tenants directly within the corridor that connects Union Square, Flatiron, and Midtown South.

Originally constructed in the late nineteenth century and later modernized, the property blends historic New York loft-style architecture with updated office infrastructure capable of supporting modern tenant demands. The result is a highly flexible workplace environment that appeals to technology firms, financial services, creative companies, and growth-stage organizations seeking both identity and operational efficiency.

What makes 111–115 Fifth Avenue stand out is its scale relative to the surrounding neighborhood. While much of Flatiron consists of boutique loft buildings, this asset delivers nearly six hundred thousand square feet of office space, allowing tenants to secure larger contiguous blocks that are difficult to replicate nearby. This creates a strategic advantage for companies looking to consolidate operations or establish a headquarters presence in Midtown South.

The building’s Fifth Avenue frontage provides strong branding visibility, while its depth and layout allow for efficient planning across open workstations, perimeter offices, and collaborative environments. Tenants benefit from a balance between classic architecture and modern workplace functionality, making it one of the more adaptable buildings in the submarket.

Architectural Identity & Presence

111–115 Fifth Avenue carries the architectural DNA of classic New York commercial buildings, with a masonry façade, large punched windows, and loft-style proportions that reflect its original construction era. Unlike glass curtainwall towers, the building offers a more grounded, textured presence that resonates strongly with creative and brand-conscious tenants.

The full-block positioning creates multiple exposures, which significantly enhances natural light penetration across floors. This is a key differentiator in Midtown South, where many buildings suffer from limited light due to narrow footprints or adjacent structures.

From a tenant perspective, the building offers a balance between visibility and usability. Fifth Avenue frontage provides strong external identity, while the interior layouts support practical, high-efficiency office configurations.

Workplace Environment

Office installations within 111–115 Fifth Avenue typically emphasize:

Large open-plan work areas designed for team-based environments
Perimeter offices with strong natural light exposure
Conference rooms and internal meeting suites
Flexible layouts supporting hybrid work strategies
Tenant pantry and hospitality buildouts
Creative-style loft environments with modern finishes

Because of the building’s scale, tenants can secure layouts that evolve over time, allowing for growth without relocation—a critical advantage in Midtown South.

Tenant Profile & Demand Drivers

111–115 Fifth Avenue consistently attracts a mix of:

Technology and growth-stage companies
Financial and fintech firms
Creative agencies and media companies
Professional services including legal and consulting

The Flatiron District continues to perform as one of Manhattan’s most stable leasing environments, driven by its central location, strong transit connectivity, and lifestyle amenities. Buildings like 111–115 Fifth Avenue benefit directly from this demand, particularly among tenants seeking larger footprints without moving into Midtown towers.

Location Advantage

The building sits in one of Manhattan’s most strategic office corridors, positioned between Union Square and Madison Square Park. This location allows tenants to draw from multiple commuting patterns while providing immediate access to dining, retail, and public space.

Employees benefit from proximity to:

Madison Square Park
Union Square transit hub
Flatiron’s restaurant and retail concentration
Broadway and Fifth Avenue commercial corridors

This combination creates a workplace environment that supports both productivity and employee satisfaction—an increasingly important factor in leasing decisions.

Tenant Advantages

One of the strongest advantages of 111–115 Fifth Avenue is its ability to deliver scale within a lifestyle-driven submarket. Tenants gain access to large floor plates and institutional ownership, while still operating in one of Manhattan’s most dynamic neighborhoods.

Unlike newer glass towers, the building offers architectural character that enhances brand identity, which is particularly valuable for companies competing for talent. At the same time, its modernized systems ensure that operational performance aligns with current Class A standards.

The full-block footprint also allows for greater planning flexibility, making it easier to design efficient layouts that support both density and collaboration.

Key Takeaway

111–115 Fifth Avenue represents a rare opportunity to secure large, efficient office space in the Flatiron District without sacrificing location, identity, or flexibility. For tenants seeking a balance between historic character and modern infrastructure—combined with one of Midtown South’s strongest addresses—this building remains one of the most strategically positioned options in the market.

111–115 Fifth Avenue is a full-block, Class A office building located in Manhattan’s Flatiron District, positioned prominently along Fifth Avenue between East 18th Street and East 19th Street. Originally constructed in the late nineteenth century and extensively modernized over time, the property blends historic Renaissance Revival architecture with updated infrastructure to meet the demands of modern office tenants.

The building occupies an entire blockfront with exposure along Fifth Avenue and partial frontage along Broadway-adjacent corridors, creating strong identity and visibility within one of Midtown South’s most established office submarkets. Its scale significantly exceeds typical Flatiron buildings, allowing for larger tenant footprints and flexible layout configurations not commonly available in the immediate area.

Core Building Metrics

• Building Address: 111–115 Fifth Avenue, New York, NY 10003
• Submarket: Flatiron District / Midtown South
• Property Type: Class A Office Building
• Ownership: Institutional Ownership (Winter Organization)
• Original Construction: Late 1800s (circa 1896)
• Redevelopment / Modernization: Repositioned with ongoing capital improvements
• Architectural Style: Renaissance Revival / Historic Loft-Style Architecture
• Building Height: Approximately 13 stories
• Total Building Size: Approximately 580,000–600,000 Square Feet
• Floor Plate Sizes: Large, efficient floor plates with potential for full-floor users
• Typical Floor Size: Approximately 40,000–50,000 Square Feet (varies by configuration)
• Ceiling Heights: Loft-style ceiling conditions with above-average slab heights
• Window Lines: Extensive oversized windows with strong natural light exposure on multiple sides
• Lobby Presence: Attended lobby with restored finishes and modern upgrades
• Elevator Infrastructure: Multiple passenger elevator banks supporting large tenant populations
• HVAC Systems: Tenant-controlled HVAC systems with modern mechanical upgrades
• Sustainability Upgrades: Incremental energy-efficiency improvements over time
• Retail Component: Ground-floor retail frontage along Fifth Avenue
• Rooftop / Terrace Components: Limited rooftop access depending on tenancy
• Loading Access: Commercial loading functionality for office and retail operations
• Security: Attended lobby with controlled building access systems
• Fiber Connectivity: High-speed telecom and fiber infrastructure available throughout

Architectural & Structural Highlights

111–115 Fifth Avenue stands as one of the more architecturally substantial buildings in the Flatiron District, characterized by its Renaissance Revival façade, strong masonry construction, and rhythmic window patterning. The structure maintains its historic exterior identity while accommodating modern office interiors, creating a hybrid environment that appeals to both traditional and creative tenants.

The building’s full-block footprint and multi-exposure layout allow for significantly enhanced natural light penetration compared to typical Midtown South loft buildings. This creates brighter, more usable office environments across entire floors, particularly valuable for companies prioritizing employee experience and workspace quality.

Its position along Fifth Avenue further enhances tenant visibility, offering branding advantages rarely matched in this submarket.

Workplace Environment

Modern office installations within 111–115 Fifth Avenue typically emphasize:

• Large collaborative open workspaces
• Perimeter offices benefiting from natural light
• Conference and meeting room infrastructure
• Flexible layouts supporting hybrid work models
• Tenant pantry and hospitality buildouts
• Creative loft-style environments with modern finishes

The building’s size allows tenants to design highly efficient layouts while maintaining flexibility for future growth, making it especially attractive for scaling organizations.

Tenant Advantages

One of the primary technical advantages of 111–115 Fifth Avenue is its ability to deliver large-scale office space within a boutique-driven submarket. Tenants gain access to floor plates and building infrastructure typically associated with larger Midtown assets, while remaining in the lifestyle-oriented Flatiron District.

The combination of historic architecture and modern systems creates a workplace that supports both branding and operational efficiency. Additionally, the building’s location near Union Square and Madison Square Park enhances employee accessibility, retention, and overall workplace satisfaction.

For tenants seeking a balance between identity, scale, and flexibility, 111–115 Fifth Avenue represents one of the most strategically positioned office assets in Midtown South.