TenThreeTwenty Building

10320 Little Patuxent Parkway • Columbia, MD 21044


Welcome to the TenThreeTwenty Building, a premier First Potomac property!

First Potomac Realty Trust
is a self-managed real estate investment trust (REIT) that focuses on owning, operating, and redeveloping office and business park properties in the Washington, D.C. region. We focus on owning and operating properties that can benefit from our market knowledge and intensive operational skills with a focus on increasing their profitability and value.

The tenant information provided in this Electronic Tenant Portal (ETP) is meant to provide you with a better understanding of the TenThreeTwenty Building and to facilitate your company's operations. Contact information for your Property Management team can be found under Operations / Building Management. Please start by reviewing the contents of the Welcome Book link above, and register for access to our Service Request system so that you may communicate any work requests to our on-site engineering team through the link along the top of this site. You should also familiarize yourself with the Emergency Procedures for the building. Information on building Amenities and building Policies and Procedures are also detailed in this ETP. Please feel free to contact us with any questions you may have throughout your tenancy.

Thank you for choosing the TenThreeTwenty Building as your business home. We are glad you're here.

First Potomac Realty Trust