Tolunay-Wong Engineers Inc. Profile: Ownership, HQ and Public Records

Every fact below carries a source link and an as-of date. 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… · As of 2026-10-05
Website: tolunay.comSource: tolunay.com · As of 2026-10-11
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 · As of 2026-10-11

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… · As of 2026-10-11

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 · As of 2026-10-04

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 · As of 2026-10-05

Federal awards (contracts)

USAspending recipient record TOLUNAY-WONG ENGINEERS, INC (Houston, TX), contract award obligations: FY2021 $-15,538, 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… · As of 2026-10-11

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… · As of 2025-07-07

Rankings and awards

Listed in the ENR 2026 Top 500 Design Firms.Source: enr.com/toplists/2026-top-500-design-fi… · As of 2026-10-05

Sources of record

Ownership tag: Ownership not published. Profiles are informational, compiled from public sources linked above. Firms may request corrections. A listing is not an endorsement.