General information for TDG, Inc.
Physical address
100 N Pitt St Ste 402, Alexandria, Va, 22314
Mailing address
100 N Pitt St Ste 402, Alexandria, VA, 22314
Website
thediallogrp.com
Points of contact for TDG, Inc.
SAM.gov Points of Contact
Theresha
Diallo
Government Business POC
Alternate Government Business POC
Electronic Business POC
Alternate Electronic Business POC
owner/Principal
100 N. Pitt St. Suite 402, Alexandria, VA, 22314
Additional contact details may be available
NAICS codes for TDG, Inc.
| Code | Description | Small Business |
|---|---|---|
| 541320 PRIMARY | Landscape Architectural Services | Yes |
| 541310 | Architectural Services | Yes |
| 541330 | Engineering Services | No |
|
541350
|
Building Inspection Services
|
Yes
|
|
541370
|
Surveying and Mapping (except Geophysical) Services
|
Yes
|
|
541410
|
Interior Design Services
|
Yes
|
|
541511
|
Custom Computer Programming Services
|
Yes
|
|
541512
|
Computer Systems Design Services
|
Yes
|
|
541513
|
Computer Facilities Management Services
|
Yes
|
|
541611
|
Administrative Management and General Management Consulting Services
|
Yes
|
|
541620
|
Environmental Consulting Services
|
Yes
|
|
561210
|
Facilities Support Services
|
Yes
|
|
561499
|
All Other Business Support Services
|
Yes
|
PSC codes for TDG, Inc.
Update history
2 change(s) tracked
Jun 4, 2026
NAICS 541330 is no longer the primary code
Jun 4, 2026
NAICS 541320 became the primary code
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