75N99023F00002↗
Addon Services LLC received this contract from Nih a E Construction, National Institutes of Health: $2.42M obligated so far for maintenance of government-owned government-operated (gogo) r&d facilities. Its period of performance ended 2026-07-31.
Key facts · data as of Oct 25, 2026
- Recipient
- Addon Services LLC
- Awarding agency
- National Institutes of Health (Department of Health and Human Services)
- Contracting office
- Nih a E Construction (75N990)
- Obligated to date
- $2.42M
- Potential value
- $2.42M
- Ends
- 2026-07-31
Source: USAspending.gov prime award records (obligations: money committed, not outlays), data as of Oct 25, 2026.
Cite this page: SpendQuery, Award 75N99023F00002, data as of Oct 25, 2026, https://spendquery.com/award?id=CONT_AWD_75N99023F00002_7529_75N99023D00013_7529
Addon Services LLC: all federal awards · Department of Health and Human Services: spending · Nih a E Construction: what it buys · The follow-on: recompete brief
C105342-NIEHS BLDG 101 E MODULE ROOF REFURBISHMENT NEEDED TO PREVENT STRUCTURAL DAMAGE-ALISON KARVER
Up for re-bid: ends 2026-07-31. Recompete brief → · NIH MULTIPLE-AWARD CONSTRUCTION CONTRACT (MACC) FOR GENERAL CONSTRUCTION SERVICES ↗
What it is
- Product or service
- Maintenance of Government-Owned Government-Operated (Gogo) R&D Facilities (PSC Z1HB)
- Industry
- Commercial and Institutional Building Construction (NAICS 236220)
- Contracting office
- Nih a E Construction (75N990)
- Competition
- Full and open after exclusion of sources · 3 offers received
- Pricing
- Firm fixed price
- How it was bought
- Multiple-award IDIQ · under 75N99023D00013
- Where the work is
- Durham, NC · district NC-04
Obligations by fiscal year
SpendQuery holds FY2023 on; earlier years are on USAspending.gov.
Subcontractors: where the money went next
No subawards reported for this award. Primes report subawards of $30,000 or more; many awards have none.
Every action
8 actions since 2023-07-19. Each is a modification or amendment with the money it added or took back.
| Date | Modification | Kind | Amount | What the agency wrote |
|---|---|---|---|---|
| 2026-04-13 | P00007 | Administrative change | $0 | C105342-NIEHS BLDG 101 E MODULE ROOF REFURBISHMENT NEEDED TO PREVENT STRUCTURAL DAMAGE-ALISON KARVER |
| 2026-02-18 | P00006 | Supplemental agreement (work within scope) | $91.8K | C105342-NIEHS BLDG 101 E MODULE ROOF REFURBISHMENT NEEDED TO PREVENT STRUCTURAL DAMAGE-ALISON KARVER |
| 2025-04-18 | P00005 | Supplemental agreement (work within scope) | $0 | C105342-NIEHS BLDG 101 E MODULE ROOF REFURBISHMENT NEEDED TO PREVENT STRUCTURAL DAMAGE-ALISON KARVER |
| 2024-09-12 | P00004 | Supplemental agreement (work within scope) | $926.3K | C105342-NIEHS BLDG 101 E MODULE ROOF REFURBISHMENT NEEDED TO PREVENT STRUCTURAL DAMAGE-ALISON KARVER |
| 2024-07-03 | P00003 | Supplemental agreement (work within scope) | $177.7K | C105342-NIEHS BLDG 101 E MODULE ROOF REFURBISHMENT NEEDED TO PREVENT STRUCTURAL DAMAGE-ALISON KARVER |
| 2024-05-17 | P00002 | Funding only | $0 | C105342-NIEHS BLDG 101 E MODULE ROOF REFURBISHMENT NEEDED TO PREVENT STRUCTURAL DAMAGE-ALISON KARVER |
| 2023-12-04 | P00001 | Supplemental agreement (work within scope) | $104.9K | C105342-NIEHS BLDG 101 E MODULE ROOF REFURBISHMENT NEEDED TO PREVENT STRUCTURAL DAMAGE-ALISON KARVER |
| 2023-07-19 | 0 | $1.12M | C105342-NIEHS BLDG 101 E MODULE ROOF REFURBISHMENT NEEDED TO PREVENT STRUCTURAL DAMAGE-ALISON KARVER |
Source: USAspending.gov prime award transactions and FSRS subaward reports, as loaded by SpendQuery (data as of 2026-10-25). Amounts are obligations (money committed), not outlays. The official record on USAspending.gov ↗