| 19 Varnum Street Operating Company, LLC | 2 | $11,567 | Jun 3, 2022 |
| Abco Construction, LLC | 1 | $1,800 | Sep 15, 2025 |
| Adjm Construction Corp. | 2 | $11,602 | Jan 6, 2022 |
| American Biltrite Inc | 50 | $118,970 | Mar 1, 2023 |
| American Stonecraft, Inc. | 4 | $600 | Jan 7, 2020 |
| Andrew General Construction Corp. | 1 | $3,547 | Feb 28, 2025 |
| Anju Realty, LLC | 3 | $3,686 | Sep 22, 2021 |
| Ascend Contracting Inc. | 4 | $8,937 | Sep 10, 2025 |
| Batista Roofing and Vinyl Siding, Inc. | 9 | $29,790 | Sep 8, 2025 |
| Benevento Companies | 3 | $12,500 | Jun 25, 2018 |
| Bradford Coating Inc. | 4 | $8,250 | Aug 16, 2018 |
| Bradford Industries | 67 | $93,799 | Apr 10, 2024 |
| Brady Companies, Inc. | 7 | $18,376 | Apr 2, 2024 |
| Bret Steel Corp. | 1 | $5,000 | Jun 26, 2024 |
| Builders' Choice of New York, Inc. | 9 | $13,236 | Jan 22, 2015 |
| Castro Pro Construction, Inc | 2 | $7,607 | Oct 12, 2021 |
| CCM General Construction Inc. | 4 | $7,200 | Apr 24, 2016 |
| Charters Brothers Construction, LLC | 9 | $7,040 | Apr 1, 2015 |
| CL Construction Services Inc. | 1 | $4,048 | May 22, 2020 |
| Coating Systems Inc | 9 | $3,225 | May 23, 2019 |
| Correntino Construction Inc. | 6 | $9,930 | Jan 27, 2025 |
| Daly General Contracting, Inc | 2 | $1,708 | Aug 23, 2023 |
| Draghi Environmental Services, Inc. | 8 | $7,000 | Oct 15, 2020 |
| Eds Pro Construction Inc | 3 | $4,000 | Jun 8, 2026 |
| Erect Construction Corporation | 5 | $24,747 | Jul 11, 2024 |
| Everett J. Prescott, Inc. | 6 | $21,626 | Jan 13, 2026 |
| Facilico, Inc. | 1 | $8,000 | Jan 31, 2019 |
| Fairhaven Healthcare Center, LLC | 2 | $1,148 | Apr 3, 2015 |
| Federal-Fabrics-Fibers, Inc. | 9 | $5,392 | Jul 24, 2018 |
| Fiesta Rides, Inc. | 6 | $3,500 | Jun 10, 2016 |
| Francisco Ortiz Construction & Remodeling, Inc. | 4 | $3,405 | Apr 25, 2025 |
| Fridel Quinonez | 1 | $2,024 | Oct 1, 2020 |
| General Construction Macancela Inc | 4 | $11,101 | Jul 6, 2026 |
| General Woodworking Inc. | 31 | $39,250 | Apr 3, 2017 |
| GJM Construction Associates, LLC | 1 | $2,482 | Aug 28, 2025 |
| Graphic Packaging International, Inc. | 3 | $4,000 | Aug 18, 2022 |
| Greenleaf Environmental Inc | 2 | $3,108 | Nov 22, 2022 |
| H & D Maintenance Corporation | 4 | $6,000 | Apr 21, 2025 |
| Innovative Fabrication, Inc. | 1 | $1,521 | Nov 8, 2017 |
| Interstate Container | 27 | $5,844 | Aug 12, 2015 |
| Interstate Container Lowell, LLC | 1 | $5,000 | Feb 6, 2018 |
| J.NR. Gutters, Inc. | 1 | $500 | Feb 25, 2015 |
| Jeme's Drywall, LLC | 1 | $2,000 | Mar 31, 2015 |
| JHG Construction Inc. | 4 | $4,839 | Jun 13, 2024 |
| JMS Construction Management Corporation | 8 | $20,216 | Aug 20, 2026 |
| JNB Construction Inc. | 1 | $300 | Aug 2, 2016 |
| Johnny's Carpentry, Inc. | 1 | $2,420 | Jul 9, 2024 |
| Joseph Dumais | 1 | $1,800 | Nov 17, 2016 |
| JQV Construction Corp. | 4 | $32,345 | Apr 29, 2025 |
| Kag Drywall LLC | 1 | $3,978 | Feb 14, 2019 |
| Lowell Department of Public Works | 6 | $0 | Mar 25, 2026 |
| Lowell General Hospital | 41 | $29,378 | Jan 10, 2023 |
| Lowell Housing Authority | 7 | $0 | Nov 21, 2023 |
| Lowell Police Department Sign & Meter Division | 4 | $0 | Dec 15, 2022 |
| Lowell Public School Department | 4 | $0 | Feb 11, 2026 |
| Lowell Public Works Department | 5 | $0 | Nov 21, 2023 |
| Lowell Regional Wastewater Utility | 3 | $0 | May 14, 2026 |
| Lowell Regional Water Utility | 3 | $0 | Jun 23, 2026 |
| Lowell Treatment Center | 7 | $9,480 | Jan 5, 2017 |
| Maggiore Construction Corporation | 18 | $23,610 | Mar 17, 2026 |
| Mahoney Oil Co., Inc. | 4 | $5,400 | Jun 5, 2015 |
| Massachusetts General Contractor Services Corp | 17 | $115,850 | Aug 28, 2025 |
| McInnis Contracting | 2 | $7,760 | Jul 13, 2018 |
| Middlesex Community College | 6 | $0 | Oct 27, 2022 |
| Millennium Plating Company | 10 | $7,391 | Oct 22, 2020 |
| Miranda's Contracting Inc | 2 | $7,944 | Aug 12, 2025 |
| Monro Inc. | 1 | $16,550 | Jul 8, 2024 |
| Montero Corporation | 2 | $2,558 | May 9, 2019 |
| Northeast Material Handling Incorporated | 6 | $10,438 | May 31, 2019 |
| Ocean Glass & Mirror Co., Inc. | 2 | $1,000 | Feb 24, 2016 |
| Onpeak Exterior Solutions LLC | 1 | $1,500 | Jul 6, 2026 |
| P & G Construction Group, Inc. | 3 | $5,000 | May 24, 2021 |
| Paradise Remodeling Inc | 4 | $3,000 | May 20, 2021 |
| Paul Leakeas | 2 | $0 | Aug 10, 2017 |
| RGC Millwork, Inc. | 3 | $3,326 | Mar 27, 2018 |
| Richards Builders Inc. | 3 | $9,678 | Sep 13, 2024 |
| Robert W. Jacobs | 1 | $1,400 | Jun 13, 2016 |
| Roger Harriman | 2 | $5,600 | Jun 13, 2016 |
| SB & Mc Services Corporation | 3 | $5,994 | Mar 21, 2017 |
| Segundo Joaquin Acero Chuma | 3 | $30,939 | Apr 21, 2023 |
| Segundo Manauas | 16 | $49,910 | Aug 1, 2023 |
| Select One Construction, LLC | 1 | $5,000 | Jan 30, 2019 |
| Senco Corp. | 1 | $2,420 | Jun 13, 2024 |
| Sorco Corporation | 9 | $10,430 | Jun 5, 2015 |
| Sterling Corporation | 12 | $9,788 | Jun 2, 2025 |
| The Granite Group Wholesalers, LLC | 1 | $4,000 | Sep 18, 2024 |
| The Industrial Broom, Inc. | 3 | $4,343 | Oct 17, 2024 |
| Thearith B. Var | 3 | $11,223 | Sep 13, 2016 |
| Thomas & Son Home Improvement Inc. | 4 | $3,646 | Nov 3, 2022 |
| Vivant Solar, Inc | 1 | $30,000 | Apr 1, 2015 |
| W.L. French Excavating Corp. | 7 | $18,710 | Apr 21, 2026 |
| Wooster Roofing | 13 | $44,310 | Apr 20, 2017 |