Contract 05GA0A23K0078
Hamilton Pacific Chamberlain Llc · Government Accountability Office · May 24, 2023
Hamilton Pacific Chamberlain Llc was awarded a federal contract by Government Accountability Office (Gao, Except Comptroller General) on May 24, 2023 for $586,000 of work in commercial and institutional building construction. Performance is in Washington, DC. This is a task or delivery order issued under parent IDIQ 05GA0A23D0007. The contract has been modified 3 times since the base award It uses firm fixed-price contract pricing. The most recent modification was on February 5, 2026.
Contract details
- PIID
- 05GA0A23K0078
- Parent IDIQ
- 05GA0A23D0007
- Award type
- Delivery Order
- Pricing
- Firm Fixed Price
- Competition
- Full And Open Competition
- NAICS
- 236220 · Commercial And Institutional Building Construction
- Product / service
- Maintenance Of Other Administrative Facilities And Service Buildings
- Place of performance
- Washington, DC
- First action
- May 24, 2023
- Latest action
- February 5, 2026
Description
THE PURPOSE OF THIS NO COST BILATERAL MODIFICATION IS TO CHANGE THE PERIOD OF PERFORMANCE END DATE FROM 06/28/2024 TO 8/30/2024, AN INCREASE OF 63 DAYS. ALL OTHER TERMS AND CONDITIONS REMAIN UNCHANGED
Modification timeline
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February 5, 2026Mod P00003THE PURPOSE OF THIS NO COST BILATERAL MODIFICATION IS TO CHANGE THE PERIOD OF PERFORMANCE END DATE FROM 06/28/2024 TO 8/30/2024, AN INCREASE OF 63 DAYS. ALL OTH$-12.5K
-
May 21, 2024Mod P00002THE PURPOSE OF THIS NO COST BILATERAL MODIFICATION IS TO CHANGE THE PERIOD OF PERFORMANCE END DATE FROM 06/28/2024 TO 8/30/2024, AN INCREASE OF 63 DAYS. ALL OTH$0
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February 16, 2024Mod P00001THE PURPOSE OF THIS NO COST BILATERAL MODIFICATION IS TO CHANGE THE PERIOD OF PERFORMANCE END DATE FROM 03/01/2024 TO 06/28/2024, AN INCREASE OF 119 DAYS.$0
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May 24, 2023Base awardCONTRACTOR TO FURNISH ALL LABOR AND MATERIALS TO REPLACE AIR HANDLERS A11-37 AND A11-38 AT THE GOVERNMENT ACCOUNTABILITY OFFICE (GAO) HEADQUARTERS BUILDING (HQ)$598.8K
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| Ameresco Inc | Government Accountability Office | February 26, 2026 | $0 |
| Hamilton Pacific Chamberlain Llc | Government Accountability Office | September 29, 2025 | $0 |
Top contractors in NAICS 236220
Lifetime obligated dollars across all federal contracts in this NAICS code.
| # | Contractor | Contracts | Obligated |
|---|---|---|---|
| 1 | Bl Harbert International Llc | 198 | $15.79B |
| 2 | Fisher Sand & Gravel Co | 14 | $8.97B |
| 3 | Caddell Construction Co. (De), Llc | 67 | $7.56B |
| 4 | Whiting-Turner Contracting Company, The | 347 | $7.54B |
| 5 | Clark Construction Group Llc | 83 | $6.72B |
| 6 | Hensel Phelps Construction Co | 97 | $6.11B |
| 7 | Harper Construction Company, Inc. | 108 | $4.21B |
| 8 | Grunley Construction Co., Inc. | 235 | $4.10B |
| 9 | Gilbane Federal | 396 | $4.00B |
| 10 | Environmental Chemical Corporation | 225 | $3.69B |
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Frequently asked questions
What is contract 05GA0A23K0078?
Contract 05GA0A23K0078 is a federal contract awarded to Hamilton Pacific Chamberlain Llc by Government Accountability Office on May 24, 2023 for $586,000 of work classified under COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION. It has been modified 3 times since the base award.
Who won contract 05GA0A23K0078?
Hamilton Pacific Chamberlain Llc won contract 05GA0A23K0078 from Government Accountability Office.
How much is contract 05GA0A23K0078 worth?
Contract 05GA0A23K0078 has obligated $586,000 to date.