| 2025-12-12 | National Gallery of Art | | $1.9M | COMMERCIAL AND INDUSTRIAL MACHINERY AND EQUIPMENT (EXCEPT AUTOMOTIVE AND ELECTRONIC) REPAIR AND MAINTENANCE |
| 2022-03-02 | National Gallery of Art | | $1.1M | COMMERCIAL AND INDUSTRIAL MACHINERY AND EQUIPMENT (EXCEPT AUTOMOTIVE AND ELECTRONIC) REPAIR AND MAINTENANCE |
| 2026-06-30 | National Gallery of Art | | $858K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2026-05-15 | National Gallery of Art | | $574K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2016-09-29 | National Gallery of Art | | $558K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2021-08-06 | National Gallery of Art | | $519K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2021-08-06 | National Gallery of Art | | $481K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2018-09-20 | National Gallery of Art | | $409K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2014-08-29 | National Gallery of Art | | $342K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2009-09-18 | National Gallery of Art | | $315K | OTHER BUILDING EQUIPMENT CONTRACTORS |
| 2026-04-28 | National Gallery of Art | | $309K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2023-08-29 | National Gallery of Art | | $286K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2022-04-12 | National Gallery of Art | | $282K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2021-05-19 | National Gallery of Art | | $261K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2026-01-21 | National Gallery of Art | | $247K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2026-03-17 | National Gallery of Art | | $247K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2016-09-16 | National Gallery of Art | | $201K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2011-08-24 | National Gallery of Art | | $180K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2020-02-05 | National Gallery of Art | | $167K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2022-08-15 | National Gallery of Art | | $162K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2009-07-28 | National Gallery of Art | | $158K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2012-03-16 | National Gallery of Art | | $116K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2013-05-23 | National Gallery of Art | | $108K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2011-08-25 | Smithsonian Institution | | $98K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |
| 2017-09-06 | National Gallery of Art | | $92K | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS |