Registered public work contractors in Ronkonkoma, New York
79 contractors and subcontractors based in Ronkonkoma hold a certificate of registration in the state file of Oct 1, 2026; 10 are MWBE owned and 26 are associated with an apprenticeship program.
| Contractor | Certificate | Expires |
|---|---|---|
| 192 Branch Interior Service, Inc. | 24-64BJ7-CR | Dec 29, 2026 |
| 2/21/1979 NEXGEN ELECTRICAL CONTRACTING, LLC | 25-65B87-CR | Mar 12, 2027 |
| Accelerated Services Inc. | 25-645VP-CR | Feb 24, 2027 |
| ACR Mechanical Services Inc. | 25-646D6-CR | Mar 4, 2027 |
| Advanced Door Solutions Inc. | 25-64X8P-CR | Jan 16, 2027 |
| ADVANCED UTILITY SOLUTIONS, INC. | 25-67BDU-CR | Oct 22, 2027 |
| AL-ARSH CONSTRUCTION, CORP. | 25-64P3V-CR | Jan 13, 2027 |
| Ambrosio and Company, Inc | 24-64D8U-CR | Dec 29, 2026 |
| American Recreational Products Ry-Lecia Corp. | 24-64NF1-CR | Dec 29, 2026 |
| AMERICAN TRUCKING SERVICES, INC. | 24-648S8-CR | Dec 29, 2026 |
| Aurora Contractors, LLC | 26-64DJJ-CR | Dec 29, 2028 |
| Bayview Custom Communications, LTD | 25-649Q7-CR | Mar 7, 2027 |
| Belfor Long Island LLC | 24-64DUP-CR | Dec 18, 2026 |
| Best Climate Control Corporation | 25-64KBA-CR | Jan 3, 2027 |
| BLINK CONTRACTORS LLC | 26-63754-CR | Dec 29, 2028 |
| BULK CHEMICAL COMPANY INC. | 25-67BEJ-CR | Oct 22, 2027 |
| Caldara and Sons Contracting INC | 25-6H9AC-CR | Oct 21, 2027 |
| Caltech Electric Inc. | 26-64FDT-CR | Dec 29, 2028 |
| CAPCO SHADES, INC. | 24-64JDD-CR | Dec 31, 2026 |
| Capitol Garment Restoration Capitol Restoration Dry Cleaners, Inc. | 25-64SDB-CR | Feb 6, 2027 |
| CAS HVAC CAS EQUIPMENT LLC | 25-6H1FF-CR | Sep 3, 2027 |
| Cassone Leasing Inc. | 24-64RLE-CR | Dec 29, 2026 |
| Celtic Industries Inc. | 24-64GC9-CR | Dec 29, 2026 |
| CLEAR RIVER ENVIRONMENTAL SERVICE CORP. | 24-64BXS-CR | Dec 29, 2026 |
| Concrete Structures Inc | 25-671DK-CR | Dec 17, 2027 |
| Construction Specialties Installations, LLC | 24-64B3F-CR | Dec 29, 2026 |
| County Energy Controls, Inc. | 24-64B8J-CR | Dec 29, 2026 |
| Delta Well & Pump Co., Inc. | 25-64KFE-CR | Jan 3, 2027 |
| Digital Provisions Inc | 25-64UA6-CR | Jan 30, 2027 |
| DIVAD CONCRETE, INC. | 24-64NR4-CR | Dec 29, 2026 |
| DRV4, Inc. | 25-64X8R-CR | Jan 16, 2027 |
| Elite Action Extinguishing Equipment and Service, Inc. | 24-64E76-CR | Dec 31, 2026 |
| Foos Fire, Inc. | 24-63H7E-CR | Dec 29, 2026 |
| Forestry Inc. | 26-64P58-CR | Jan 13, 2029 |
| FUTURE SHOCK ARCHITECTURAL METALS & GLASS CORP. | 26-64YO7-CR | Dec 29, 2028 |
| HAQQ CONSTRUCTION CORP. | 25-64VVC-CR | Jan 7, 2027 |
| HARTCORN PLUMBING & HEATING INC. | 24-64BEP-CR | Dec 29, 2026 |
| Ideal Fence Corporation | 25-6HPBU-CR | Aug 12, 2027 |
| Industrial Refrigeration Inc | 26-66F4Y-CR | Feb 27, 2028 |
| J. PETROCELLI CONTRACTING, INC. | 25-65SQK-CR | May 21, 2027 |
| JD Traditional Industries JD Consulting LLC | 24-64Y9Q-CR | Dec 29, 2026 |
| JENNOSA POOLS INC. | 25-678IJ-CR | Nov 10, 2027 |
| JMF Contracting Inc. | 24-64N5L-CR | Dec 29, 2026 |
| JNS Heating Service, Inc. | 24-637J7-CR | Dec 29, 2026 |
| Jo-Mark Installations Inc. | 24-64DHK-CR | Dec 29, 2026 |
| JOHN PAUL ELECTRIC, INC. | 26-648OK-CR | Dec 29, 2028 |
| Jonathan Metal & Glass, Ltd. | 25-649VF-CR | Mar 6, 2027 |
| Just Plumbing Corp. | 26-64EP4-CR | Dec 30, 2028 |
| Just Plumbing Industries Inc. Just Plumbing Industries, Inc. | 26-64G1G-CR | Dec 29, 2028 |
| JVR Electric, Inc. | 25-64J5G-CR | Jan 2, 2027 |
| KP ORGANIZATION OF QUALITY PAINTING INC | 25-64JZI-CR | Jan 2, 2027 |
| KUNDIG CONTRACTING INC. | 25-64P1K-CR | Jan 13, 2027 |
| LAB CRAFTERS, INC. | 24-64NKB-CR | Dec 29, 2026 |
| LAKE LANDSCAPE & MASON SUPPLY A Lot Industries Corp | 25-67EOJ-CR | Nov 12, 2027 |
| Legacy Tile Corp. | 24-64RZI-CR | Dec 29, 2026 |
| Macedo Construction MACEDO CONTRACTING SERVICES, INC. | 24-64BNF-CR | Dec 29, 2026 |
| Michael James Industries, Inc. | 26-66GQC-CR | Mar 2, 2028 |
| Northeast Builders, Inc. | 26-63HPR-CR | Dec 29, 2028 |
| OneService Commercial Building Maintenance Inc. | 25-65D7Z-CR | Mar 19, 2027 |
| OneService Maintenance OneService Security Services, Inc | 25-64TAG-CR | Jan 24, 2027 |
| P.S.L. INDUSTRIES, INC. | 24-637OE-CR | Dec 29, 2026 |
| PointVoIP PointVoIP, LLC. | 26-66831-CR | Mar 5, 2028 |
| Rockmore Contracting Corp. | 25-64SRB-CR | Feb 6, 2027 |
| Roebell Painters Co., Inc. | 24-64BJ9-CR | Dec 29, 2026 |
| Sav Mor Mechanical Services Inc | 25-6H4Y8-CR | Oct 1, 2027 |
| Sav-Mor Mechanical Inc. | 25-641PJ-CR | Jan 27, 2027 |
| Schnabel Roofing of L.I. Inc. Schnabel Roofing of Long Island, Inc. | 24-64G3L-CR | Dec 29, 2026 |
| Shona Mechanical, Inc. | 24-639NJ-CR | Dec 29, 2026 |
| Silk Installations Inc | 25-64J3N-CR | Jan 2, 2027 |
| Statewide Roofing Inc. | 26-64B36-CR | Dec 31, 2028 |
| SUNation Energy, Inc. | 25-64IV4-CR | Feb 4, 2027 |
| Telechoice Consulting, Inc. Telechoice Consulting Inc. | 26-69QGT-CR | Jul 9, 2028 |
| THE CAPCO GROUP, INC. | 24-64JRD-CR | Dec 31, 2026 |
| Triple S Air Systems Inc. | 26-64BYY-CR | Dec 29, 2028 |
| UNITED STEEL FABRICATION INC. | 25-64LAZ-CR | Feb 3, 2027 |
| UNIVERSAL TEMPERATURE CONTROLS LTD. | 25-67GBG-CR | Nov 5, 2027 |
| UP TOWN ELECTRIC, INC. | 25-64OOE-CR | Jan 21, 2027 |
| Vortech Mechanical Corp. | 24-64JYI-CR | Dec 31, 2026 |
| Yellow Top Farms YELLOW TOP FOOD CORP. | 26-691CB-CR | Jul 27, 2028 |
Alphabetical order — this site ranks no one. Certificates in the New York State Department of Labor file of Oct 1, 2026. Absence from a list is not proof a contractor is unregistered. How to read this.