Office Space at Open Square
We believe the space you work in matters. It matters to you and your colleagues. It matters to your bottom line. It matters to your clients. At Open Square, people feel connected to each other and to their environment. And when humans feel connected, they feel grounded and whole, setting the stage for your company to do its best work.
We’d love to welcome you to Open Square.
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Available Space
Class A Office Space*

Mill 4, Suite 310
Suite 310 on the third floor of Mill 4 is one of our nicest offices that was newly and custom built in 2014 for a tenant that has relocated to an even newer office on the 4th floor! This is a beautiful office that can hardly be described, but it has a custom designed conference room, kitchenette, 4 offices, waiting area, 2 cubicle spaces with full cubicle setups, and huge windows with custom blinds installed. You really have to see it to understand how awesome it is! Over 3,500 sf total and right next to renovated swanky restrooms and water fountain. $5,000/month NNN, includes trash/recycling, mailroom, dedicated HVAC. 2-year lease minimum and excellent credit required. Prorated first month and security deposit (equal to 2 month’s rent) due at lease signing.
Mill 4, Suites 306, 309 & 316
Mill 4, 3rd floor is waiting to welcome you. Every office space at Open Square rests on a solid foundation: the built-to-last brick and wood construction of an Industrial Age mill in western New England. And every space builds on this foundation by adding functional, welcoming, well-designed custom features based on YOUR specific needs. We have spaces of 1,800, 3,500 and 9,300 square feet offices available. Approximately $18-22/square foot. 6-month build-out time frame. Minimum ten-year lease.
Mill 4, Suite 120
Mill 4, Suite 120 is an ‘L’ shaped office, approximately 550 sq. ft. Two large windows (that open wide) with deep window ledges. The building is heavily wired for data with three providers to choose among. Tons of natural light and neutral walls/carpeting. Rent includes heat/basic electric/AC/mailroom and cleaning of common areas. Minimum 1-year lease and excellent credit required. $700/month. Two months rent (for security deposit) and a pro-rated first month rent due at lease signing.

Mill 4, Suite 129
Approximately 135 square feet. Small, cozy office with window into interior hallway plus privacy screen. Great for those remote workers or freelancers that need a workspace separate from home! $350/month inclusive of all but broadband. 1-year lease and excellent credit required.

MILL 4, SUITE 404
Suite 404 is a large office space with plenty of room to build out interior office spaces and a potential closet and/or loft area. This suite is 1,400 sf right near our lovely ballet studio and surrounded by professional businesses on our most beautifully renovated floor. Ceilings are 14′ and this suite has two large window bays and large storefront window to let in all the natural light from both sides of the building. $2,050/month plus % of heat and taxes. Trash/recycling, mailroom, and AC unit included. 4 sets of cubicles included to use however you would like.

MILL 4, SUITE 415
This suite is just over 900 sf and is the perfect size for a small professional office. Open floorplan so you have lots of options with desk/cubicle/seating area layouts. The space features two window bays abutting the lower canal, hardwood floors, and high ceilings. $1,300/month plus % of heat and taxes. Trash/recycling, mailroom, and AC unit included.
* Terms and conditions subject to change.