| | SPACE PLANNING, DESIGN, CONSTRUCTION DOCUMENTATION, AND CONSTRUCTION ADMINISTRATION SERVICES IN SUPPORT OF HUD HQ. | USGBF NSF LLC | $155,700 | HOUSING AND URBAN DEVELOPMENT, DEPARTMENT OF | HOUSING AND URBAN DEVELOPMENT, DEPARTMENT OF | — | 531120Lessors of Nonresidential Buildings (except Miniwarehouses) | R499SUPPORT- PROFESSIONAL: OTHER | Apr 22, 2026 | Apr 22, 2026 | Apr 21, 2027 |
| | MINOR REPAIRS, MAINTENANCE, HVAC AND ELECTRICAL SERVICES IN SUPPORT OF HUD HQ | USGBF NSF LLC | $250,000 | HOUSING AND URBAN DEVELOPMENT, DEPARTMENT OF | HOUSING AND URBAN DEVELOPMENT, DEPARTMENT OF | — | 531120Lessors of Nonresidential Buildings (except Miniwarehouses) | R499SUPPORT- PROFESSIONAL: OTHER | Apr 13, 2026 | Apr 13, 2026 | Apr 12, 2027 |
| | EMERGENCY ELECTRICAL PANEL RECONCILIATION OR RELATED ELECTRICAL SUPPORT SERVICES AT NEW HUD HQ FACILITIES, 2415 EISENHOWER AVE, ALEXANDRIA, VA 22314 | USGBF NSF LLC | $240,000 | HOUSING AND URBAN DEVELOPMENT, DEPARTMENT OF | HOUSING AND URBAN DEVELOPMENT, DEPARTMENT OF | — | 531120Lessors of Nonresidential Buildings (except Miniwarehouses) | R499SUPPORT- PROFESSIONAL: OTHER | Mar 19, 2026 | Mar 19, 2026 | Mar 18, 2027 |
| | EISENHOWER PARKING (UNDERGROUND) | USGBF NSF LLC | $4,347,703 | HOUSING AND URBAN DEVELOPMENT, DEPARTMENT OF | HOUSING AND URBAN DEVELOPMENT, DEPARTMENT OF | — | 812930Parking Lots and Garages | M1LZOPERATION OF PARKING FACILITIES | Feb 26, 2026 | Mar 2, 2026 | Aug 31, 2030 |
| | NSF ALEXANDRIA HQ USAA EMERGENCY ELECTRICAL PANEL RECONCILIATION | USGBF NSF LLC | $240,000 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Sep 4, 2025 | Sep 8, 2025 | Sep 23, 2025 |
| | NSF ALEXANDRIA HQ BUILDING MINOR REPAIRS AND MAINTENANCE | USGBF NSF LLC | $250,000 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Sep 4, 2025 | Sep 8, 2025 | Sep 7, 2026 |
| | 24/7 BUILDING FANS | USGBF NSF LLC | $57,145 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Dec 18, 2024 | Jan 1, 2025 | Dec 31, 2025 |
| | NSF BRANDING - SIGNAGE UPDATES | USGBF NSF LLC | $114,608 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Sep 19, 2024 | Sep 30, 2024 | Apr 30, 2025 |
| | NSF 11TH FLOOR WEST TEAM ROOM RENOVATION | USGBF NSF LLC | $184,466 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Aug 23, 2024 | Oct 31, 2024 | Nov 22, 2024 |
| | NSF ALEXANDRIA HQ USAA EMERGENCY ELECTRICAL PANEL RECONCILIATION | USGBF NSF LLC | $240,000 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Aug 6, 2024 | Sep 8, 2024 | Sep 7, 2025 |
| | NSF ALEXANDRIA HQ BUILDING MINOR REPAIRS AND MAINTENANCE | USGBF NSF LLC | $250,000 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Jul 23, 2024 | Sep 8, 2024 | Sep 7, 2025 |
| | SPACE PLANNING AND MANAGEMENT | USGBF NSF LLC | $134,585 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Jan 18, 2024 | Mar 1, 2024 | Sep 30, 2025 |
| | NSF - 24/7 BUILDING FAN SERVICES | USGBF NSF LLC | $55,566 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Dec 14, 2023 | Jan 1, 2024 | Dec 31, 2024 |
| | NSF TIP 6TH FLOOR RENOVATION - SECURITY CARD READERS | USGBF NSF LLC | $20,153 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Sep 18, 2023 | Oct 1, 2023 | Sep 30, 2024 |
| | TIP PA, SECURITY AND ACOUSTICAL - C&W | USGBF NSF LLC | $50,833 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Sep 8, 2023 | Sep 8, 2023 | Sep 7, 2024 |
| | NSF - 2023 ELECTRICAL CONSUMPTION RECONCILIATION | USGBF NSF LLC | $39,730 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Sep 7, 2023 | Sep 7, 2023 | Sep 6, 2024 |
| | NSF ALEXANDRIA HQ USAA EMERGENCY ELECTRICAL PANEL RECONCILIATION | USGBF NSF LLC | $240,000 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Jul 13, 2023 | Sep 8, 2023 | Sep 7, 2024 |
| | NSF ALEXANDRIA HQ BUILDING MINOR REPAIRS AND MAINTENANCE | USGBF NSF LLC | $250,000 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Jul 13, 2023 | Sep 8, 2023 | Sep 7, 2024 |
| | ELECTRIC VEHICLE CHARGING STATION REPLACEMENT ON B1 LEVEL | USGBF NSF LLC | $55,321 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | May 11, 2023 | May 31, 2023 | Jan 31, 2024 |
| | SPACE PLANNING AND MANAGEMENT | USGBF NSF LLC | $134,585 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Jan 27, 2023 | Mar 1, 2023 | Feb 29, 2024 |
| | NSF ALEXANDRIA HQ USAA EMERGENCY ELECTRICAL PANEL RECONCILIATION | USGBF NSF LLC | $195,012 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Sep 14, 2022 | Sep 8, 2022 | Sep 7, 2023 |
| | NSF CONVERSION OF LOUNGES TO HOTELING STATIONS AND INSTALLATION OF ACOUSTIC PANELS 8,10,12 AND 14 | USGBF NSF LLC | $56,880 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Aug 22, 2022 | Sep 1, 2022 | Mar 31, 2023 |
| | NSF - ELEVATOR ADA FUNCTIONALITY MODIFICATIONS | USGBF NSF LLC | $34,512 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Aug 22, 2022 | Sep 1, 2022 | Dec 31, 2023 |
| | NSF - OAD/FO AUTOMATIC DOOR OPERATOR INSTALLATION | USGBF NSF LLC | $101,025 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Jul 25, 2022 | Aug 1, 2022 | Mar 31, 2023 |
| | NSF ALEXANDRIA HQ BUILDING MINOR REPAIRS AND MAINTENANCE | USGBF NSF LLC | $250,000 | NATIONAL SCIENCE FOUNDATION | NATIONAL SCIENCE FOUNDATION | — | 531190Lessors of Other Real Estate Property | R499SUPPORT- PROFESSIONAL: OTHER | Jul 11, 2022 | Sep 8, 2022 | Sep 7, 2023 |