GovChime
UEI: DJV5DEYW6QB7 • CAGE: 3C6S8

TOLUNAY-WONG ENGINEERS, INC (TX)

Registration and award facts

SAM.gov registration as of

Net obligations since FY2008
$1.22M
$1,224,073under this UEI
FY2026 obligations
$0
Provisional
Awards and orders
41
with positive net obligations4 IDV vehicles held
Latest action
Jul 24, 2026
SAM.gov registration
Active
Registration expiration date Sep 30, 2027

Registration

Entity structure
Corporate Entity (Not Tax Exempt)
Business start date
Aug 6, 1993 (33 years)
Location
Houston, TX
State of incorporation
Texas
Purpose of registration
All Awards
Website
tweinc.com

† FY2026 obligations (provisional; DoD awards signed after Jul 29, 2026 are not yet public).

Contract actions that the Department of Defense both funds and awards are withheld at the source for 90 days, so DoD awards signed after Jul 29, 2026 are not yet public.

All federal contractors in TexasHow these figures are built

Source: SAM.gov entity registration and FPDS contract actions recorded under UEI DJV5DEYW6QB7. GovChime does not check exclusions.

Performance

Net obligations recorded under this UEI since FY2008. Top lists show the largest five by share of this vendor's net obligations; the shares do not sum to 100%.

Net obligations by fiscal year of action

  • FY2025: $69,310
  • FY2021: -$15,538 (de-obligation)
  • FY2020: $6,737
  • FY2019: $87,157
  • FY2018: $28,535
  • FY2017: $55,408
  • FY2016: $36,791
  • FY2011: -$1,331 (de-obligation)
Show all 11 years
  • FY2010: -$21,963 (de-obligation)
  • FY2009: $48,997
  • FY2008: $929,970

Total across 11 fiscal years: $1,224,073

Net de-obligation in that fiscal year (obligations withdrawn).

Top awarding agencies

Top awarding sub-agencies

Top NAICS by obligations

Top product and service codes by obligations

  • B504Study/chemical-biological$884,268, 72.2%
  • H156Quality control- construction and building materials$268,400, 21.9%
  • B532Soil studies$49,907, 4.1%
  • B519Geotechnical studies$21,498, 1.8%

Capabilities

SBA certifications

No certification in the SBA profile data.

Business types self-reported in SAM.gov registration:

  • Asian-Pacific American Owned
  • Minority-Owned Business

Product and service codes (PSC)

  • C219ARCHITECT AND ENGINEERING- GENERAL: OTHER

Contracts

Latest awards and orders

  1. W912P826AA003Blanket purchase agreement (BPA)VehicleDepartment of DefenseDepartment of the ArmyLatest action
  2. W912P825F0057BPA callunder a blanket purchase agreement (BPA)Department of DefenseDepartment of the ArmyLatest action
  3. W912P821A0002Blanket purchase agreement (BPA)VehicleDepartment of DefenseDepartment of the ArmyLatest action
  4. W912P819F0074BPA callunder a blanket purchase agreement (BPA)Department of DefenseDepartment of the ArmyLatest action
  5. W912P819F0031BPA callunder a blanket purchase agreement (BPA)Department of DefenseDepartment of the ArmyLatest action
  6. W912P820F0202BPA callunder a blanket purchase agreement (BPA)Department of DefenseDepartment of the ArmyLatest action
  7. W912P820F0091BPA callunder a blanket purchase agreement (BPA)Department of DefenseDepartment of the ArmyLatest action
  8. W912P820F0089BPA callunder a blanket purchase agreement (BPA)Department of DefenseDepartment of the ArmyLatest action
  9. W912P817F0047BPA callunder a blanket purchase agreement (BPA)Department of DefenseDepartment of the ArmyLatest action
  10. W912P818F0271BPA callunder a blanket purchase agreement (BPA)Department of DefenseDepartment of the ArmyLatest action

Contact Info

As of . Source: SAM.gov Points of Contact.

SAM.gov registration for TOLUNAY-WONG ENGINEERS, INC lists a physical address and a separate mailing address, along with 3 verified points of contact. Past Performance contacts are the recommended outreach channel for due-diligence references; Government Business contacts handle procurement-facing correspondence.

Source: SAM.gov entity registration. Contacts displaying numeric or placeholder names have been filtered (defense-in-depth).

Physical Address

10710 S SAM HOUSTON PKWY W STE 100

HOUSTON, TX, 77031

USA

Mailing Address

10710 S SAM HOUSTON PKWY W STE 100

HOUSTON, TX, 77031

USA

Government Business Contact

Nicholas Vastakis

Sr. Vice President

10710 S. SAM HOUSTON PKWY W. #100

Houston, TX, 77031

USA

Electronic Business Contact

Nicholas C Vastakis

Sr. Vice President

10710 S. SAM HOUSTON PKWY W., #100

Houston, TX, 77031

USA

Past Performance Contact

Esperanza Standfield

Administrative

10710 S. Sam Houston Pkwy W.

Ste. 100

Houston, TX, 77031

USA

Additional Details

As of . Source: SAM.gov Entity Registration.

TOLUNAY-WONG ENGINEERS, INC has no active federal suspension or debarment on record in SAM.gov. Current SAM.gov registration expires September 30, 2027.

Source: SAM.gov entity registration (FAR responses, registration status). Always verify active exclusions against the authoritative record on SAM.gov before contract award.

Compliance & Risk Assessment

Source: SAM.gov FAR responses

Suspension/Debarment Status

SAM.gov registration reports no active exclusion

Public Display

Entity information is publicly displayed

Disaster Relief Registry

Not registered for disaster relief

EDI

Not declared in SAM.gov

Business Structure

Source: SAM.gov
Profit Structure:For Profit Organization

Registration Details

Source: SAM.gov

Initial Registration

Jan 15, 2003

Last Update

Oct 1, 2026

Registration Activation

Active — Oct 1, 2026

Fiscal Year End

12/31

Country of Incorporation

USA

Congressional District

09