Corporate Office Properties Trust, now operating as COPT Defense Properties, is headquartered in Columbia, Maryland. COPT Defense is a specialized real estate investment trust serving U.S. Government defense installations, defense contractors, and mission-critical office and data center customers. The corporate, tenant-service, leasing, investor, and shareholder contacts are provided below.
- Corporate Address: 6711 Columbia Gateway Drive, Suite 300, Columbia, MD 21046
- Corporate Phone: 1-443-285-5400
- General Contact: COPT contact form
- Tenant Services: Regional tenant-service contacts
- Investor Relations: ir@copt.com
- Current Company Name: COPT Defense Properties
- Former Name: Corporate Office Properties Trust
- NYSE Stock Symbol: CDP
How to Contact COPT Defense Properties Corporate Office Headquarters
COPT Defense Properties Headquarters Overview
- COPT Corporate Address: 6711 Columbia Gateway Drive, Suite 300, Columbia, MD 21046
- COPT Corporate Office Phone Number: 1-443-285-5400
- General Corporate Contact: COPT online contact form
- Investor Relations Phone Number: 1-443-285-5400
- Investor Relations Email: ir@copt.com
- Investor Relations Fax: 1-443-285-7650
- Columbia Tenant Services: 1-443-285-0722
- Other Tenant-Service Markets: COPT tenant-services directory
- Media Relations Email: media@copt.com
- Shareholder and Transfer-Agent Support: 1-800-468-9716
- Careers and Job Openings: COPT careers
- Official Website: copt.com
- Stock Symbol: CDP on the New York Stock Exchange
COPT Defense Properties is headquartered in Columbia, Maryland.
Which COPT Defense Contact Should You Use?
| Reason for Contact | Recommended Contact |
|---|---|
| General corporate question | Call 1-443-285-5400 or submit the corporate contact form |
| Tenant maintenance or property-service issue | Use the regional tenant-services number assigned to the property |
| Columbia-area tenant service | Call 1-443-285-0722 |
| Leasing or available commercial space | Locate the property on COPT.com and contact the leasing representative shown on its property page |
| Tenant improvement, buildout, development, or data center inquiry | Use the COPT contact form and identify the service, market, and property involved |
| Investor Relations question | Email ir@copt.com or call 1-443-285-5400 |
| Registered shareholder account, dividend, or ownership-record issue | Contact EQ Shareowner Services at 1-800-468-9716 |
| Media inquiry | Email media@copt.com |
| Employment opportunity | Visit the COPT Defense careers page |
How to Report a COPT Property or Tenant-Service Concern
Existing tenants should begin with the property-management or tenant-services team responsible for their building. COPT publishes different telephone numbers for its Columbia, Canton Crossing, San Antonio, Huntsville, Annapolis Junction, Pax River, Washington, Dulles Tech, Pinnacle, and Airport Square markets.
When reporting a property or service concern, provide:
- The building address and suite number
- The tenant or organization name
- The appropriate on-site contact person
- The date and approximate time the problem began
- The type of maintenance, access, billing, leasing, or property issue
- Any existing work-order or case number
- Photographs that do not expose security-sensitive areas or information
- The requested resolution
If the regional property team does not resolve the concern, submit the corporate contact form or send a written escalation to the Columbia headquarters. Include a summary of the issue, previous contacts, work-order numbers, relevant dates, and the resolution being requested.
COPT Defense Properties Reviews and Complaints
The CorporateOfficeHeadquarters.com page currently shows no submitted reviews for Corporate Office Properties Trust or COPT Defense Properties. Tenants, leasing prospects, vendors, job applicants, and other parties may be the first to share an appropriate firsthand experience.
A useful review can discuss property management, maintenance response, leasing communication, tenant buildout, vendor interactions, corporate support, or complaint handling. Reviews should remain factual and should not reveal confidential lease terms, personal information, security procedures, restricted property information, or sensitive tenant activities.
About COPT Defense Properties
COPT Defense Properties is a publicly traded real estate investment trust focused on owning, operating, and developing mission-critical facilities. Its properties support key U.S. Government defense installations, defense contractors, information-technology operations, cybersecurity missions, and data center customers.
The company develops and manages office facilities, secure mission-critical buildings, tenant improvements, build-to-suit properties, and data center shells. Many of its properties are located near major government and defense demand drivers.
COPT Defense is an S&P MidCap 400 company, and its common shares trade on the New York Stock Exchange under the ticker symbol CDP.
What Happened to Corporate Office Properties Trust?
Corporate Office Properties Trust announced in September 2023 that it was changing its name to COPT Defense Properties. The new name was selected to more clearly reflect the company’s concentration in properties serving national defense, information technology, government, and mission-critical operations.
The name change did not create an unrelated replacement company. COPT Defense Properties continued the operations of Corporate Office Properties Trust from the same Columbia headquarters. The stock ticker changed from OFC to CDP.
COPT Defense Properties’ Competitive Position
COPT Defense competes for tenants, development opportunities, properties, capital, and specialized projects with office REITs, data center companies, commercial property developers, and regional property owners.
More direct REIT and mission-critical real estate comparisons may include Boston Properties, Digital Realty, Easterly Government Properties, Equinix, Alexandria Real Estate Equities, and Vornado Realty Trust.
In the broader office and commercial property market, companies such as Regus and Lincoln Property Company also provide or manage business space, although their operating models differ from COPT Defense’s specialized REIT strategy.
COPT Defense distinguishes itself through its concentration near government defense installations and its experience with secure, technically sophisticated, mission-critical office and data center facilities.
Frequently Asked Questions
Is Corporate Office Properties Trust still in business?
Yes. Corporate Office Properties Trust changed its name to COPT Defense Properties in September 2023. The company continues operating from its Columbia, Maryland headquarters.
Where is the COPT Defense Properties corporate office?
COPT Defense Properties is headquartered at 6711 Columbia Gateway Drive, Suite 300, Columbia, MD 21046.
What is the COPT corporate office phone number?
The COPT Defense Properties corporate office number is 1-443-285-5400.
What is the COPT customer service number?
COPT Defense does not publish a conventional national consumer customer-service number. General corporate and Investor Relations calls can be made to 1-443-285-5400. Existing tenants should use the regional number listed on the official tenant-services page.
How do I report a tenant-service emergency?
Visit the COPT tenant-services page and call the number assigned to the property’s market. Columbia tenant services can be reached at 1-443-285-0722.
What is the COPT Investor Relations email address?
Investor Relations can be contacted at ir@copt.com.
What is the current COPT fax number?
COPT Defense lists 1-443-285-7650 as its Investor Relations fax number.
What is the COPT Defense Properties stock symbol?
COPT Defense Properties trades on the New York Stock Exchange under the ticker symbol CDP. Its former ticker, OFC, was retired when the company adopted its current name.
Who handles COPT shareholder account questions?
EQ Shareowner Services is COPT Defense’s transfer agent. Registered shareholders can call 1-800-468-9716 about ownership records, dividend payments, transfers, and related account matters.
How do I contact COPT about leasing space?
Locate the applicable property or market through COPT.com. Individual property pages identify the leasing representatives and contact information for available space.
How can I apply for a job at COPT Defense?
Open positions, benefits, internships, veteran opportunities, and other employment information are available through the COPT Defense careers page.
Official COPT Defense Properties Resources
- COPT Defense Properties official website
- Corporate contact form
- Tenant-services contacts
- COPT Defense capabilities
- Careers and employment
- Investor Relations and company information
- Investor and transfer-agent contacts
Why Trust CorporateOfficeHeadquarters.com?
CorporateOfficeHeadquarters.com independently researches corporate contact information using company-operated websites, regulatory filings, and other authoritative sources. We distinguish corporate, tenant-service, leasing, investor, media, and shareholder contacts so readers can select the appropriate route.
Information reviewed and updated: August 28, 2026
Disclaimer
CorporateOfficeHeadquarters.com is not affiliated with COPT Defense Properties or the former Corporate Office Properties Trust. This page is provided for informational purposes and as an independent platform for complaints, compliments, reviews, and feedback.
Property contacts, personnel, service numbers, leasing availability, and company information can change. Verify important details through COPT Defense Properties before visiting, calling, mailing documents, or sharing sensitive information.