Every fact below links to its source. Informational only. Ownership statements are limited to primary announcements and filings.
- Headquarters
- Houston, Texas, as listed by ENR in the 2026 Top 500 Design FirmsSource: enr.com/toplists/2026-top-500-design-fi…
- Website
- tolunay.comSource: tolunay.com
- Ownership type
- Ownership not published
Legal name, DBA and former names
- Tolunay-Wong Engineers Inc. (name as shown on the firm's website)Source: tolunay.com
Identifiers (UEI, state registrations)
- SAM UEI DJV5DEYW6QB7 (as shown on the USAspending recipient record) and Texas TBPELS firm no. 124.Source: usaspending.gov/recipient/a8733377-2a8b-b6fd-2d…
Licences (board records)
- Texas TBPELS roster lists Tolunay-Wong Engineers, Inc. (firm no. 124, type NS, expires 2028-07-31)Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
DOT prequalification
- TxDOT Active Precertified Firms lists TOLUNAY-WONG ENGINEERS, INC. with 16 areas of certification, renewal status JANUARY 11, 2023 ( ACTIVE )Source: dot.state.tx.us/des/precert/precrt13.htm
Federal awards (contracts)
- USAspending recipient record TOLUNAY-WONG ENGINEERS, INC (Houston, TX), contract award obligations: FY2021 -$15,538 (net reduction from modifications), FY2022 $0, FY2023 $0, FY2024 $0, FY2025 $69,310 (award types A to D; obligations as published, including modifications and negative adjustments)Source: usaspending.gov/recipient/a8733377-2a8b-b6fd-2d…
This line reflects one USAspending recipient record for one legal entity and does not describe all federal work by the firm or its affiliates.
Public filings
- DOL Form 5500 filings, plan year beginning 2024-01-01, NAICS 541330: TOLUNAY-WONG ENGINEERS, INC. 401(K) PLAN (ACK_ID 20250707224611NAL0004196641001, 335 active participants); TOLUNAY-WONG ENGINEERS, INC. WRAP PLAN (ACK_ID 20260317095149NAL0005001810001, 321 active participants)Source: dol.gov/agencies/ebsa/about-ebsa/our-ac…
Rankings and awards
- Listed in the ENR 2026 Top 500 Design Firms.Source: enr.com/toplists/2026-top-500-design-fi…
Sources of record
- https://tolunay.com/
- https://www.usaspending.gov/recipient/a8733377-2a8b-b6fd-2dcb-910c93c2274f-P/latest
- https://www.enr.com/toplists/2026-top-500-design-firms-4
- https://tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
- https://www.dot.state.tx.us/des/precert/precrt13.htm
- https://www.dol.gov/agencies/ebsa/about-ebsa/our-activities/public-disclosure/foia/form-5500-datasets
Ownership tag: Ownership not published. Profiles are informational, compiled from public sources linked above. Firms may request corrections. A listing is not an endorsement.
