Updated: Jun 05, 2026
Location
Headquarters Address
1074 THOMAS JEFFERSON STREET NW, Washington, DC, 20007
Local address
Washington, DC, 20007
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Hartman-cox Architects
Hartman-cox Architects, (Owned by: Hartman Cox Architects Llp) holds a Architect Business Information license and 10 other licenses according to the Florida license board.
Their BuildZoom score of 91 ranks in the top 37% of 222,249 Texas licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Hartman-cox Architects, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
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Hartman-cox Architects Contact Information
Phone Number: (202) 333-6446
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Verified License
BuildZoom confirmed this contractor's license
Hartman-cox Architects License info
License Not Verified
| Status | Active |
| State | Florida |
| Type | Architect Business Information |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Hartman-cox Architects with the Florida Department of Business & Professional Regulation
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | ARCHITECT #19966 |
| Status | Active |
| State | Texas |
| Type | Architect |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Hartman-cox Architects at the Texas Board of Architectural Examiners.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 7410, 7416 |
| Status | Active |
| State | Alabama |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of December, 2015. Check the current license status of Hartman-cox Architects with the Alabama Board of Architects
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 5362 |
| Status | Active |
| State | Alabama |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of December, 2015. Check the current license status of Hartman-cox Architects with the Alabama Board of Architects
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 4694 |
| Status | Active |
| State | Tennessee |
| Type | Architectural Firms |
- When BuildZoom last verified this license, it had an expiration date of December, 2015. Check the current license status of Hartman-cox Architects with the Tennessee Department of Commerce and Insurance
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 0407002664 |
| Status | Active |
| State | Virginia |
| Type | Business Entity Registration Architect |
- When BuildZoom last verified this license, it had an expiration date of December, 2015. Check the current license status of Hartman-cox Architects with the Virginia Board for Architects, Professional Engineers, Land Surveyors, Certified Interior Designers and Landscape Architects
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 0407005530 |
| Status | Active |
| State | Virginia |
| Type | Business Entity Registration Architect License |
- When BuildZoom last verified this license, it had an expiration date of December, 2015. Check the current license status of Hartman-cox Architects with the Virginia Board for Architects, Professional Engineers, Land Surveyors, Certified Interior Designers and Landscape Architects
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 0407000175 |
| Status | Active |
| State | Virginia |
| Type | Business Entity Registration Architect |
- When BuildZoom last verified this license, it had an expiration date of December, 2015. Check the current license status of Hartman-cox Architects with the Virginia Board for Architects, Professional Engineers, Land Surveyors, Certified Interior Designers and Landscape Architects
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 104925 |
| Status | Active |
| State | Tennessee |
| Type | Architects |
- When BuildZoom last verified this license, it had an expiration date of December, 2015. Check the current license status of Hartman-cox Architects with the Tennessee Department of Commerce and Insurance
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | AX011348 |
| Status | Inactive |
| State | Pennsylvania |
| Type | Architecture Firm |
- According to the Pennsylvania Department of State (Bureau of Professional and Occupational Affairs), the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Hartman-cox Architects at the Pennsylvania Department of State (Bureau of Professional and Occupational Affairs).
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 10496 |
| Status | Inactive |
| State | North Carolina |
| Type | Architect |
- According to the North Carolina Board of Architecture, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Hartman-cox Architects at the North Carolina Board of Architecture.
This is a sample of licensing data; click here to access a complete history.
91
BuildZoom Score
Hartman-cox Architects Employees
DG
Davidson, Donald Graham
GD
Graham Davidson
HA
Hartman Cox Architects
Owner
HL
Hartman Cox Architects Llp
Owner
ML
Mary Katherine Lanzillotta
Owner
ML
Marykatherine Lanzillotta
Owner
TB
T. Lee Becker
Owner
WC
Warren J Cox
Owner