CHANG-CASTILLO & ASSOCIATES LLC: public contracts won without a rival in United States: 41 uncontested awards; 100% of its awards; 3 without a competition; 38 single bid.
Assay record ASY-US-18EXYS21YY · Cite as: Assay Systems, “CHANG-CASTILLO & ASSOCIATES LLC: public contracts won without a rival in United States”, https://assay-systems.com/register/us/uncontested/s/chang-castillo-associates-llc/
CHANG-CASTILLO & ASSOCIATES LLC won 41 of its 41 public contract awards in United States without a rival from 2023-11-14 to 2026-07-08, worth $190K: 3 without a competition and 38 after a competition that drew a single bid. 3 buyers awarded it without a rival, the largest Department of State with 38.
An award is uncontested when the buyer had no rival offer to weigh: it was made without a competition (direct award, negotiated procedure without a call for tenders, sole-source or advance-notice contract), or a competition was held and only one bid arrived. Every count below is built award by award from the official notices. Awards to individuals are not included.
Department of State gave CHANG-CASTILLO & ASSOCIATES LLC 38 awards: 0 without a competition, 38 after a competition with a single bid. First 2023-11-14, latest 2026-07-08.
Office of the Chief Financial Officer gave CHANG-CASTILLO & ASSOCIATES LLC 2 awards: 2 without a competition, 0 after a competition with a single bid. First 2023-12-12, latest 2024-02-07.
National Institute of Standards and Technology gave CHANG-CASTILLO & ASSOCIATES LLC 1 award: 1 without a competition, 0 after a competition with a single bid. First 2025-04-09, latest 2025-04-09.
| Date | Buyer | How | Value | Stated reason |
|---|---|---|---|---|
| 2026-07-08 | Department of State 190PRL26F0397007 | Single bid COMPETED UNDER SAP | $214 | — |
| 2026-05-15 | Department of State 190PRL26F0397006 | Single bid COMPETED UNDER SAP | $2.2K | — |
| 2026-03-04 | Department of State 190PRL26F0397005 | Single bid COMPETED UNDER SAP | $82 | — |
| 2026-02-06 | Department of State 190PRL26F0397004 | Single bid COMPETED UNDER SAP | $4.8K | — |
| 2026-01-28 | Department of State 190PRL26F0397003 | Single bid COMPETED UNDER SAP | $960 | — |
| 2026-01-26 | Department of State 190PRL26F0397002 | Single bid COMPETED UNDER SAP | $108 | — |
Every uncontested award in United States · All countries · CHANG-CASTILLO & ASSOCIATES LLC in the register
Source: USAspending.gov prime award transactions (contracts). Awards are matched to their buyer and supplier as published. Updated 17 October 2026.