Oshawa's Premier
Shared Office Community
and Business Centre

From shared office space to private offices to meeting rooms, large and small, CORE21 provides all the business amenities you need plus an intangible - a collaborative, friendly atmosphere from a growing community of more than 30 businesses and community groups making us their home.

Come in and find out what makes us special.


As more and more of us gradually return to using the CORE21 office space, we'd like to share a quick update and some "new normal" etiquette and expectations for those coming in, to best ensure the health and safety of our members, staff, and guests.
Please read the following list of items carefully to ensure you are doing your part to contain the spread:
• At this point, our doors will remain locked to avoid unknown and unexpected walk-in visitors.  All visits to CORE21 must be by appointment only.  We will not be conducting impromptu tours or meetings or accepting Day Pass users for the time being.  As always, all members will continue to be able to access the workspace and meeting rooms 7 days a week with their access card.  If you would like to view our space and discuss rental options, please contact us to set up an appointment.
• A desk shield has been installed around the Reception Desk. Please refrain from coming behind the desk except to pick up mail.
• Hands must be washed or sanitized just prior to or upon entering the building.
A self-provided face mask or covering is required in the Reception area and while using common spaces as we cannot guarantee adequate physical distancing can be maintained at all times. Please request your visitors to wear one as well.
• We kindly ask that the number of visitors be kept to a minimum for the time being. If an in-person meeting is required, we request that they are scheduled by appointment only and that people wear their masks. Guests should contact you directly upon arrival so you can let them in the front doors.  Please ensure they sign-in.  Guests should be escorted to the door for departure.
• Continued physical distancing of 2 meters/6 feet, is expected in all common areas like kitchen and lounge spaces. We ask that if someone is in the kitchen, you wait until they are done in the space for your turn.
• Meetings held in our meeting and event rooms are limited to no more than 10 people at this time with appropriate physical distancing in place and/or mask-wearing and disinfecting of surfaces after use.
• There is reduced seating at our Hot Desk to allow for physical distancing while working.  
Disinfectant wipes are located throughout the common areas so you can wipe down before and after using the space, including work desk surfaces, kitchen counters, and meeting room tables.
• Clean your hands often, using soap and water (for a minimum of 20 seconds) or with an alcohol-based hand sanitizer.
• Cover your cough or sneeze into your elbow or a tissue. Immediately throw the tissue in the garbage and wash your hands.
• Do not come to CORE21 if you’re not feeling well, show symptoms consistent with COVID-19 infection, or have been around people who are not well.
• Avoid touching your face.
Rest assured that we are keeping up with advisories and updates from all levels of government and health officials and will communicate any changes to procedures as we receive new information.
We thank our COREmmunity for your ongoing support as we all work through this challenging time. As small businesses, we are in this together and will always strive to do what is best for the health and welfare of all of us.

Stay healthy and safe Friends!

Versatile Spaces to Rent in the Hub of Downtown Oshawa

Core 21 Facade

Oshawa's premier shared office community and business center

21 Simcoe Street South in the heart of downtown Oshawa is home to Core21. This beautiful two-storey, fully renovated building was specifically designed to provide a shared business facility in a friendly community setting. Book a tour today and find out how we can satisfy all of your needs from mail service to private offices to meeting rooms to event rooms, and everything in between!

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Coworking Spaces

We offer a wide variety of cheerful, energizing workspace options that encourage productivity, interaction, and community.

core21private office

Private Offices

Need something a little more private and quiet? Then a private office may be a perfect fit for you. We supply the desk and the space, you supply the business genius.

reception area

Business Address & Mail Service

Don't need office space but need a business address? We have you covered there too. We can accept your mail and parcels at our reception.

CORE21 Boardroom

Meeting Rooms

CORE21 offers its clients a variety of meeting rooms, perfect for client meetings, interviews, board and staff meetings, conference calls, as well as brainstorming sessions and workshops.


Dedicated Desk Rental

Dedicated use of a 6' executive high end desk with lockable storage cabinet located in the communal working space area on our main floor.

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Event Room

The Event room at CORE21 is available to rent at an affordable rate to host gatherings of a larger scale such as presentations and seminars, educational classes, networking events and more.

Main Floor

Lounge & Amenities

No matter which space you rent, CORE21 provides excellent amenities. We have the business equipment you need plus lounge areas throughout the space where you can interact and catch up with colleagues, friends, and your guests.  There is also the Servery and more.


CORE21 is located in the heart of downtown Oshawa and is proud to be home to 30 local business and community organizations.

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