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Coworking Space • 150+ SF
| Architecture, Nature, Access to town. |
Success is the space you work in. 355 main is designed for professionals who want more than four walls and a door. Here, you get a beautifully curated, move-in ready space in a boutique campus setting. It feels less like a traditional office, and more like a private club for getting your best work, relationships, and ideas off the ground. The original Armonk Professional Center, built in the 1960s, is a 2-story office building with a rich history. The recent addition to the lobby by famed Architect Vatche Simonian seamlessly merges old and new. The new two-story glass enclosure and stone-clad elevator tower contrast with and yet complement the structure's original brick facade. The elevator tower is clad with oversized stone panels that continue to the interior of the lobby and conceal the mechanical room doors, creating a monolithic anchor for the site. About 355 Main - The Destination Workplace The office of tomorrow isn't just a place to work—it's a place people choose to be. We call this the Destination Workplace. 355 Main operates as an Office Club: a members-only environment serving both dedicated tenants and flex workers, with public, semi-private, and private zones designed for how people actually work today. Our Dynamic Spaces transform throughout the day—reconfiguring for focus work, collaboration, meetings, workshops, and presentations. Premium furniture enables rapid adaptation to match any work style or team need.
| Name | Space Use | Size | Rent | Details |
|---|---|---|---|---|
| 2nd Floor Ste 1-2p Private Office | Coworking | 150-1,500 SF | $1.00 USD/SF/MO | |
A turnkey private office tailored for modern working styles. With a dedicated workspace, comfortable seating for visitors, and secure storage, it’s an ideal setting for focused work, client conversations, and day-to-day operations. $1500 Monthly.
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| 2nd Floor Ste 2-3pp Private Office | Coworking | 200-600 SF | $6.00 USD/SF/MO | |
This move-in-ready office for 2–3 people, featuring a shared three-person workstation, two sit/stand desks, and a small meeting table with guest seating. Built for easy collaboration, private work, and team touch points throughout the day.
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| 2nd Floor Ste 4-6pp Private Office | Coworking | 260-550 SF | $8.33 USD/SF/MO | |
Built for teams that create, build, and collaborate, this suite seats 4–6 comfortably with shared worktables, hardwired power, and room to spread out. Add acoustic panels or multiple monitors to customize the space for production work, it offers the perfect balance of productivity and connection.
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| 2nd Floor Ste Membership | Coworking | 3,500 SF | $140.04 USD/SF/YR | |
Membership provides access the Public and Semi-Private amenities of Opus 355. Memberships tiers are available, learn more at https://opus355.com/solutions/hybrid.
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| Tenant | SF Occupied | Lease End Date |
|---|---|---|
| 355 Main | ||
| CPG Real Estate | ||
| Interwire Group Inc | ||
| Northwell Health | 1/14/2029 |
| Commuter Rail | Drive | Walk | Distance |
|---|---|---|---|
| Chappaqua Station (Harlem Line - Metro-North Commuter Railroad Company (Metro-North)) | 11 min | - | 6.2 mi |
| Pleasantville Station (Harlem Line - Metro-North Commuter Railroad Company (Metro-North)) | 13 min | - | 6.6 mi |
| Airport | Drive | Walk | Distance |
| Westchester County | 9 min | - | 5.3 mi |
| LaGuardia | 49 min | - | 32.3 mi |
| Parking Available: | Yes |
| Reserved: | No |
| Type: | Surface |
| Included in Rent: | Yes |
