Apprenticeship Sponsor — page 10 of 20
5,826 businesses with an active “Apprenticeship Sponsor” credential — administered by the Department of Labor. State file of October 1, 2026.
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| Place | Business | Record | Credentials | Latest expiration |
|---|---|---|---|---|
| Terryville, CT | Iseli Company | 9357C4E7CE | Apprenticeship Sponsor | Jun 30, 2005 |
| Norfolk, MA | Island Lighting & Power Systems, Inc. | C7C2D4EA94 | Apprenticeship Sponsor | Jun 30, 2020 |
| Rocky Hill, CT | IT TECHNICIAN, CSI CONTRACTORS | AC89599ED3 | Apprenticeship Sponsor | — |
| Manchester, CT | It's On Electric, LLC | 730E894F36 | Apprenticeship Sponsor | Jun 30, 2004 |
| Waterbury, CT | ITW Anchor Stampings divison of Illinois Tool Works, Inc. | 29208E2681 | Apprenticeship Sponsor | Jun 30, 2005 |
| Waterbury, CT | ITW Drawform | BCE91ED355 | Apprenticeship Sponsor | Jun 30, 2027 |
| Naugatuck, CT | ITW Stamp Tech Fasteners Division of Illinois Tool Works | 7A23240FC2 | Apprenticeship Sponsor | Jun 30, 2027 |
| Newington, CT | IV Electric, LLC | 3F6CA0FDB3 | Apprenticeship Sponsor | Jun 30, 2026 |
| Willimantic, CT | IVES BROTHERS INC | B44D9AF0C8 | Home Heating Fuel Dealer + 3 more | Sep 30, 2027 |
| Lisbon, CT | Izbicki Contracting LLC | 527736A530 | Apprenticeship Sponsor | Jun 30, 2020 |
| Stamford, CT | J & A Mechanical Service, LLC | D9A49138C9 | Apprenticeship Sponsor | Jun 30, 2017 |
| Naugatuck, CT | J & A Waterville Oil Service, Inc. | EDC107D9B2 | Apprenticeship Sponsor | Jun 30, 2020 |
| Fairfield, CT | J & B Electrical Construction, LLC | AE78E426E9 | Apprenticeship Sponsor | Jun 30, 2027 |
| South Windsor, CT | J & B Electrical Systems LLC | 113FA32593 | Apprenticeship Sponsor | Jun 30, 2019 |
| East Hartford, CT | J & B Mechanical Contractors, LLC | 6BDEA94A8E | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| East Hartford, CT | J & B Plumbing | 5B3948481D | Apprenticeship Sponsor | Jun 30, 2004 |
| Bridgeport, CT | J & B Plumbing & Heating | 96AE082FA4 | Apprenticeship Sponsor | Jun 30, 2010 |
| Bethel, CT | J & B Service Co. LLC | 862F2ABB14 | Apprenticeship Sponsor | Jun 30, 2024 |
| Hamden, CT | J & E Oil Company B.E.R.H. LLC | D3ADDC1514 | Apprenticeship Sponsor | Jun 30, 2016 |
| East Haven, CT | J & G Mechanical LLC | D6AE27D0E9 | Apprenticeship Sponsor | Jun 30, 2018 |
| Deep River, CT | J & G Technology, LLC | 0C62D4DC0C | Apprenticeship Sponsor | Jun 30, 2021 |
| Danbury, CT | J & J Clap Electrical Contractors LLC | B034ECAEA3 | Apprenticeship Sponsor | Jun 30, 2027 |
| Warwick, RI | J & J Electric Company | EA589C1B2A | Apprenticeship Sponsor | Jun 30, 2010 |
| Hebron, CT | J & J Electrical Services, LLC | CBD8DCD18D | Apprenticeship Sponsor | — |
| Thomaston, CT | J & J Precision Eyelet, Inc. | 05668AC68D | Apprenticeship Sponsor | Jun 30, 2027 |
| Milford, CT | J & J Security, LLC | D26E15DF71 | Apprenticeship Sponsor | Jun 30, 2026 |
| Madison, CT | J & K Electric & Alarms, LLC | 8F4920076B | Apprenticeship Sponsor | Jun 30, 2027 |
| Putnam, CT | J & L CONTRACTORS INC | 105D579C17 | New Home Construction Contractor + 2 more | Mar 31, 2027 |
| Plantsville, CT | J & M Electric LLC | 50EC47679E | Apprenticeship Sponsor | Jun 30, 2008 |
| Coventry, CT | J & M Merrell Plumbing & Heating LLC | A06BCF26FC | Apprenticeship Sponsor | Jun 30, 2027 |
| West Haven, CT | J & M Plumbing & Heating | 4A5093C045 | Apprenticeship Sponsor | Jun 30, 2010 |
| Litchfield, CT | J & M Plumbing & Heating, LLC | 2750A847E0 | Apprenticeship Sponsor | Jun 30, 2027 |
| East Haven, CT | J & N Electric Inc. | 15B9C6B3AE | Apprenticeship Sponsor | Jun 30, 2025 |
| Hamden, CT | J CO Plumbing, LLC | CFD5DC96F3 | Apprenticeship Sponsor | Jun 30, 2009 |
| Oakville, CT | J DIAS PLUMBING LLC | AC35E1F913 | Apprenticeship Sponsor | Jun 30, 2026 |
| Windsor Locks, CT | J H LAPIERRE JR & SON LLC | 89054DCA25 | Major Contractor + 1 more | Jun 30, 2027 |
| Meriden, CT | J Hall Electrical, LLC | 9A1DD7C703 | Apprenticeship Sponsor | Jun 30, 2026 |
| Brookfield, CT | J IAPALUCCIO INC | 6C7F0EE2D0 | Demolition Contractor + 2 more | Sep 30, 2027 |
| Guilford, CT | J J SULLIVAN INC | DE3EB0A239 | Motor Fuel Quality Registration + 4 more | Oct 31, 2027 |
| Norfolk, CT | J K Electric & Service, LLC | A9DFB8C1E3 | Apprenticeship Sponsor | Jun 30, 2010 |
| Ansonia, CT | J K Electric, LLC | E984282EBD | Apprenticeship Sponsor | Jun 30, 2020 |
| South Windsor, CT | J Mellington Fire Protection, LLC | 7B184A0258 | Apprenticeship Sponsor | Jun 30, 2027 |
| Waterbury, CT | J P MAGUIRE ASSOCIATES INC | B4AC97C54A | Major Contractor + 4 more | Jun 30, 2027 |
| Naugatuck, CT | J&A OIL DELIVERY LLC | 6FF482BF50 | Home Heating Fuel Dealer + 2 more | Sep 30, 2027 |
| Norwalk, CT | J&P Plumbing LLC | 19285A6EDF | Apprenticeship Sponsor | Jun 30, 2027 |
| Manchester, CT | J-Electric | DADEB08FE0 | Apprenticeship Sponsor | Jun 30, 2014 |
| Enfield, CT | J-Mar Electric, LLC | 1874B10C6C | Apprenticeship Sponsor | Jun 30, 2012 |
| Oxford, CT | J. Barlow Electric LLC | 3041C735BE | Apprenticeship Sponsor | Jun 30, 2009 |
| New Milford, CT | J. Burns HVAC, LLC | C76C0469F0 | Apprenticeship Sponsor | Jun 30, 2018 |
| Danbury, CT | J. Cole Electric, LLC | F4C93F2D5B | Apprenticeship Sponsor | Jun 30, 2023 |
| Pawcatuck, CT | J. Crompton Electric, LLC | 44B4B66509 | Apprenticeship Sponsor | Jun 30, 2015 |
| Windsor, CT | J. Duke Plumbing, LLC | DB1B9031BE | Apprenticeship Sponsor | Jun 30, 2020 |
| Newtown, CT | J. Fusaro Plumbing & Heating, Inc. | 7FEBFE0262 | Apprenticeship Sponsor | Jun 30, 2027 |
| Torrington, CT | J. Gasper Heating & Air Conditioning | 380D8319ED | Apprenticeship Sponsor | Jun 30, 2023 |
| Stamford, CT | J. Mallozzi Electrical Contractor LLC | E932D441D7 | Apprenticeship Sponsor | Jun 30, 2018 |
| Plantsville, CT | J. Milo Plumbing | 6C489D716B | Apprenticeship Sponsor | Jun 30, 2015 |
| Ridgefield, CT | J. Mulvaney Plumbing & Heating, Inc. | 68F2E2BBA7 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Willimantic, CT | J. S. Sabo | 28EA226942 | Apprenticeship Sponsor | Jun 30, 2010 |
| Thomaston, CT | J. Serenson Heating & Cooling LLC | 71496B1E76 | Apprenticeship Sponsor | Jun 30, 2014 |
| Norwalk, CT | J. Singer Electric Co., LLC | 1E7C885BA3 | Apprenticeship Sponsor | Jun 30, 2021 |
| Stamford, CT | J. Socci Plumbing, LLC | 74D53B4088 | Apprenticeship Sponsor | Jun 30, 2027 |
| East Haven, CT | J. V. CANESTRI PLUMBING & HEATING | 88F281C5F3 | Apprenticeship Sponsor | Jun 30, 2027 |
| Norfolk, CT | J.A.G. Electric | FAC75593DA | Apprenticeship Sponsor | Jun 30, 2009 |
| West Hartford, CT | J.A.W.S Barbershop LLC | 394CEF6CEC | Apprenticeship Sponsor | — |
| Wolcott, CT | J.C. Electric, Inc. | 82FE6FADDD | Apprenticeship Sponsor | Jun 30, 2006 |
| Wolcott, CT | J.C.S. Electrical Services LLC | 09EE16C919 | Apprenticeship Sponsor | Jun 30, 2027 |
| Plainville, CT | J.D.A Lawn System LLC | BD743E0BB2 | Apprenticeship Sponsor | Jun 30, 2016 |
| Plainville, CT | J.D.A. Lawn Sprinklers, LLC | F24D2C6C9F | Apprenticeship Sponsor | Jun 30, 2025 |
| Stonington, CT | J.D.M. Electric | 9821B6B49B | Apprenticeship Sponsor | Jun 30, 2027 |
| East Haven, CT | J.D.S. Refrigeration | 01391ECCA1 | Apprenticeship Sponsor | Jun 30, 2007 |
| Plantsville, CT | J.E. Shea Electric, Inc. | 44AF06D466 | Apprenticeship Sponsor | Jun 30, 2027 |
| Norwalk, CT | J.F. Buchta Electric Co., Inc. | 826F8D67D5 | Apprenticeship Sponsor | Jun 30, 2011 |
| Hamden, CT | J.F.D. Tube & Coil Products, Inc. | AA4B5B4785 | Apprenticeship Sponsor | Jun 30, 2024 |
| Southington, CT | J.F.G. Electric | F4C9320F9F | Apprenticeship Sponsor | Jun 30, 2008 |
| Broadbrook, CT | J.G. LaRochelle Company | 3B81905C5F | Apprenticeship Sponsor | Jun 30, 2027 |
| Naugatuck, CT | J.H. BARLOW PUMP SUPPLY INC. | EAE9C0D61F | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Griswold, CT | J.J. Electric Company of Griswold LLC | 389EBB6F2D | Apprenticeship Sponsor | Jun 30, 2009 |
| Prospect, CT | J.M. Cipriano & Sons LLC | 920CACCBE6 | Apprenticeship Sponsor | Jun 30, 2027 |
| Ashford, CT | J.M. Cyr Construction LLC | ED0496A4D6 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Durham, CT | J.M. Edwards Electric LLC | F305AFED10 | Apprenticeship Sponsor | Jun 30, 2027 |
| Woodbridge, CT | J.M. Electric | E1AD139562 | Apprenticeship Sponsor | Jun 30, 2006 |
| Manchester, CT | J.N. Phillips Glass Company, Inc. | F4B516C3CE | Apprenticeship Sponsor | Jun 30, 2020 |
| Stratford, CT | J.N.S. Electric LLC | E9A2A8E4C8 | Apprenticeship Sponsor | Jun 30, 2009 |
| South Windsor, CT | J.O. Electrical LLC | 9F404CB1C8 | Apprenticeship Sponsor | Jun 30, 2018 |
| Northfield, CT | J.P. Dunn Heating & Cooling, LLC | 9D3CEC45B7 | Apprenticeship Sponsor | Jun 30, 2027 |
| Stratford, CT | J.P. Heating & Cooling, LLC | A36C2B8684 | Apprenticeship Sponsor | Jun 30, 2027 |
| Milford, CT | J.P. Kempf Co., Inc. | 292C01186C | Apprenticeship Sponsor | Jun 30, 2027 |
| Milford, CT | J.P. Salmini Co., Inc. | 9BC9CB2409 | Apprenticeship Sponsor | Jun 30, 2011 |
| Stratford, CT | J.R. Merritt Controls, Inc. | 89EF5CDA33 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bridgeport, CT | J.R. Tobin Heating & Cooling | 21057C932D | Apprenticeship Sponsor | Jun 30, 2011 |
| Barkhamsted, CT | J.R.E. LLC | 51E0847233 | Apprenticeship Sponsor | Jun 30, 2026 |
| Plainville, CT | J.S. Electrical, LLC | 7E334C2EA4 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Derby, CT | J.T. Electric Company | 25D13111B7 | Apprenticeship Sponsor | Jun 30, 2012 |
| Windsor Locks, CT | J.T.N. Electrical, Inc. | D8B231B679 | Apprenticeship Sponsor | Jun 30, 2027 |
| Seymour, CT | J.V. Precision Machine Company | 082759CA7A | Apprenticeship Sponsor | Jun 30, 2022 |
| Shelton, CT | JA Binkley & Sons | 775E2854E1 | Apprenticeship Sponsor | Jun 30, 2022 |
| Waterbury, CT | JA-MA Wellington Electrical Contractors, Inc. | 48CDDE6DA9 | Apprenticeship Sponsor | Jun 30, 2027 |
| West Haven, CT | JAC Technologies, Inc. dba Firetech Engineered Systems | 320001ECE2 | Apprenticeship Sponsor | Jun 30, 2027 |
| Voluntown, CT | Jack Cipriano Plumbing & Heating | 7F1E5A6502 | Apprenticeship Sponsor | Jun 30, 2025 |
| Bloomfield, CT | Jack Goldberg & Son Plumbing | CABDEE4609 | Apprenticeship Sponsor | Jun 30, 2017 |
| Fairfield, CT | Jack Goncalves, LLC | 520359BC59 | Apprenticeship Sponsor | Jun 30, 2024 |
| Old Saybrook, CT | Jack Lamb Electric | 0184B62DD9 | Apprenticeship Sponsor | Jun 30, 2010 |
| Thomaston, CT | Jackson Manufacturing, Inc. | 667EEC13A1 | Apprenticeship Sponsor | Jun 30, 2005 |
| Milford, CT | Jacob Plumbing Heating & Drains, Inc. | 96C9DD1583 | Apprenticeship Sponsor | Jun 30, 2018 |
| Bloomfield, CT | Jacobs Vehicle Systems, Inc. | 34FD00BBE1 | Apprenticeship Sponsor | Jun 30, 2027 |
| Monroe, CT | JACOZZI PHC, LLC | C27FC84B03 | Apprenticeship Sponsor | Jun 30, 2028 |
| Farmington, CT | JAGS Acquisitions Co., LLC dba JF Fredericks Aereo | C520E0EC56 | Apprenticeship Sponsor | — |
| Hartford, CT | Jak's Flooring Inc. | 22B1EF4C65 | Apprenticeship Sponsor | Jun 30, 2013 |
| Watertown, CT | Jakiela Electric, LLC | 8599C611B5 | Apprenticeship Sponsor | Jun 30, 2017 |
| Greenwich, CT | Jam Electric, LLC | 3B3936DE9F | Apprenticeship Sponsor | Jun 30, 2012 |
| Niantic, CT | Jamco Electric LLC | BEDCB067B0 | Apprenticeship Sponsor | Jun 30, 2026 |
| Harwington, CT | James Breda Electric, LLC | 7B67EF685C | Apprenticeship Sponsor | Jun 30, 2021 |
| Plainville, CT | James C. Caruso Plumbing, LLC | 7DCE0FC23C | Apprenticeship Sponsor | Jun 30, 2011 |
| Falls Village, CT | James Casey & Sons Plumbing & Heating | 51A01D5197 | Apprenticeship Sponsor | Jun 30, 2026 |
| South Hadley, MA | James Fleming Electrical Contractors | 4816BB91F0 | Apprenticeship Sponsor | Jun 30, 2007 |
| Westport, CT | James Izzo Electrical Service | 437F975B32 | Apprenticeship Sponsor | Jun 30, 2022 |
| Westbrook, CT | James Keating Plumbing DBA | F341ED332D | Apprenticeship Sponsor | Jun 30, 2004 |
| Stamford, CT | JAMES ROMANIELLO SERVICES LLC | A54F58A4A1 | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| Bristol, CT | JAMES RYBCZYK PLUMBING & HEATING & AC INC. | D8CCAC23D2 | Apprenticeship Sponsor | Jun 30, 2027 |
| Waterbury, CT | James S. Sullivan Cable Co., Inc. | 81CCC1704D | Apprenticeship Sponsor | Jun 30, 2027 |
| Trumbull, CT | James Toigo Heating, A/C & Plumbing | F7C4EA75EE | Apprenticeship Sponsor | Jun 30, 2008 |
| Milldale, CT | Janazzo Services Corporation | 1D442837AE | Apprenticeship Sponsor | Jun 30, 2023 |
| Stamford, CT | Jansco Electric Inc. | F46C4F4351 | Apprenticeship Sponsor | Jun 30, 2015 |
| Morris, CT | Jansen & Wife Expert Plumbing, LLC | DE51B95C8D | Apprenticeship Sponsor | Jun 30, 2010 |
| Portland, CT | Jarvis Airfoil, Inc. | 9F475BA20D | Apprenticeship Sponsor | Jun 30, 2027 |
| Harwinton, CT | JASINSKI FUEL SERVICE LLC | 8CC1697BE4 | Home Heating Fuel Dealer + 2 more | Sep 30, 2027 |
| Manchester, CT | JAWS Barbershop | F987B68754 | Apprenticeship Sponsor | Jun 30, 2026 |
| Canton, CT | Jay Gauthier Plumbing & Heating LLC | 329A4CBA92 | Apprenticeship Sponsor | Jun 30, 2021 |
| Oxford, CT | Jay Marrone Electric LLC | 1A5FFB7810 | Apprenticeship Sponsor | Jun 30, 2008 |
| Bristol, CT | Jaykom Plumbing | 43F312126C | Apprenticeship Sponsor | Jun 30, 2022 |
| Torrington, CT | Jaylynn Salon | 6054B35307 | Apprenticeship Sponsor | — |
| Oxford, CT | JB's Barbershop | E55D555AE1 | Apprenticeship Sponsor | Jun 30, 2026 |
| New London, CT | JBS BARBER SPA LLC | 8743D3E92C | Apprenticeship Sponsor | Jun 30, 2027 |
| Ansonia, CT | JC Electronic Technologies, LLC | 4B0EA6DADD | Apprenticeship Sponsor | Jun 30, 2020 |
| Bozrah, CT | JC Heating & Cooling, LLC | 44ED5B8433 | Apprenticeship Sponsor | Jun 30, 2027 |
| Canaan, CT | JCO Plumbing & Heating LLC | 4B5A807439 | Apprenticeship Sponsor | Jun 30, 2027 |
| Oxford, CT | JCR Electric, LLC | 91004A8A04 | Apprenticeship Sponsor | Jun 30, 2027 |
| Newtown, CT | JD Heating, LLC | 3FE72B4DA8 | Apprenticeship Sponsor | Jun 30, 2022 |
| New Britain, CT | JD Resources LLC | 076E8C3543 | Apprenticeship Sponsor | Jun 30, 2008 |
| South Windsor, CT | JDC Enterprises, Inc. | 4FE844CFCF | Apprenticeship Sponsor | Jun 30, 2020 |
| Falls Village, CT | JDC Plumbing & Heating | 09A10A4597 | Apprenticeship Sponsor | Jun 30, 2020 |
| West Haven, CT | JDH Plumbing and Heating | 9E1BB38923 | Apprenticeship Sponsor | Jun 30, 2027 |
| Meriden, CT | JDS Electric, LLC | 32074B6EF6 | Apprenticeship Sponsor | Jun 30, 2027 |
| West Haven, CT | Jean Telusmar Electric | 1AD0B7A43B | Apprenticeship Sponsor | Jun 30, 2022 |
| New Preston, CT | Jeff Berry & Sons, LLC | CF7C3C71BC | Apprenticeship Sponsor | Jun 30, 2009 |
| Torrington, CT | Jeff DeVito Electrical Contracting | 51AC2EAE46 | Apprenticeship Sponsor | Jun 30, 2009 |
| Brookfield, CT | JEFF GMUER PLUMBING, LLC | B2F53E2B32 | Apprenticeship Sponsor | Jun 30, 2027 |
| Wolcott, CT | Jeff Hubeny Plumbing LLC | 9F25EB234D | Apprenticeship Sponsor | Jun 30, 2009 |
| West Suffield, CT | Jeff Jones, LLC | 8157F31B95 | Apprenticeship Sponsor | Jun 30, 2023 |
| Windsor, CT | Jeff O'Brien Plumbing & Heating, LLC | 7A3F3B5D60 | Apprenticeship Sponsor | Jun 30, 2006 |
| Griswold, CT | Jeffers Electric LLC | 4858A5CDF7 | Apprenticeship Sponsor | Jun 30, 2023 |
| Norwalk, CT | Jefferson Plumbing & Heating | 5F5D61B7E4 | Apprenticeship Sponsor | Jun 30, 2026 |
| Waterford, CT | Jeffrey Cascio & Son Plumbing & Heating | 07D92AF41B | Apprenticeship Sponsor | Jun 30, 2015 |
| Clinton, CT | Jeffrey Corrone DBA - Star Plumbing & Heating | 8C1C143BA6 | Apprenticeship Sponsor | Jun 30, 2012 |
| Durham, CT | Jeffrey M. Roblee Plumbing, LLC | EE2238A333 | Apprenticeship Sponsor | Jun 30, 2009 |
| Brooklyn, CT | Jeffs Electric LLC | 60EE7735E6 | Apprenticeship Sponsor | Jun 30, 2007 |
| Coventry, CT | Jem Electrical Contractor LLC | 785A485FE7 | Apprenticeship Sponsor | Jun 30, 2006 |
| Sandy Hook, CT | JEM Electrical Services llc | F45C39E617 | Apprenticeship Sponsor | Jun 30, 2027 |
| North Haven, CT | JEM Plumbing & Heating, Inc. | 9C662C7516 | Apprenticeship Sponsor | Jun 30, 2008 |
| Beacon Falls, CT | Jemco Corporation | C9FFE2C009 | Apprenticeship Sponsor | Jun 30, 2004 |
| South Windsor, CT | JENNINGS ELECTRICAL CONTRACTING, LLC | B03BF12182 | Apprenticeship Sponsor | Jun 30, 2025 |
| Danbury, CT | JENNINGS OIL CO | 31A899D561 | Home Heating Fuel Dealer + 2 more | Sep 30, 2027 |
| Coventry, CT | JES Mechanical LLC | F18C0DB40F | Apprenticeship Sponsor | Jun 30, 2027 |
| Southbury, CT | Jesse Cedors Plumbing LLC | ECBDFD6BFA | Apprenticeship Sponsor | Jun 30, 2026 |
| Oxford, CT | Jesse's Barber Shop | 030ADF51AF | Apprenticeship Sponsor | Jun 30, 2024 |
| Cromwell, CT | Jessica's Color Room Salon | 4D27B65412 | Apprenticeship Sponsor | Jun 30, 2027 |
| Enfield, CT | JESSIE ELECTRICAL SYSTEMS | C3CA031AC8 | Apprenticeship Sponsor | Jun 30, 2027 |
| Ridgefield, CT | Jessup Plumbing & Heating Inc. | C61E50280A | Apprenticeship Sponsor | Jun 30, 2009 |
| East Hartford, CT | JET Electric | 17867E1D2E | Apprenticeship Sponsor | Jun 30, 2014 |
| Stamford, CT | Jet Electric, Inc. | 2565AED2E7 | Apprenticeship Sponsor | Jun 30, 2020 |
| Glastonbury, CT | Jet Plumbing, LLC | 04E60BA7BC | Apprenticeship Sponsor | Jun 30, 2024 |
| Stafford Springs, CT | Jetmore Construction, LLC | 2FC19E2FC7 | Apprenticeship Sponsor | Jun 30, 2019 |
| New Britain, CT | Jeweled Hair Lounge & Beauty Supply | F22AF68997 | Apprenticeship Sponsor | — |
| Stamford, CT | JEWISH COMMUNITY CENTER, INC. | 919AC71CF8 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Thompson, CT | Jezierski Plumbing & Heating Inc. | 20FE339F6C | Apprenticeship Sponsor | Jun 30, 2027 |
| New Milford, CT | JFC ELECTRICAL, LLC | E211B5F917 | Apprenticeship Sponsor | Jun 30, 2027 |
| Danbury, CT | JFS Electric, LLC | BEAED6FCCE | Apprenticeship Sponsor | Jun 30, 2017 |
| West Haven, CT | JG Electric, LLC | 01C39549A3 | Apprenticeship Sponsor | Jun 30, 2011 |
| New Haven, CT | JIFFY PLUMB LLC | AD5236C73C | Apprenticeship Sponsor | Jun 30, 2027 |
| Seymour, CT | Jim Bowen Electric | FC52C25DE3 | Apprenticeship Sponsor | Jun 30, 2008 |
| Milford, CT | Jim Gaffney & Son's Plumbing, LLC | 5252B31007 | Apprenticeship Sponsor | Jun 30, 2019 |
| Simsbury, CT | Jim Kerr Plumbing | E7265FAEFF | Apprenticeship Sponsor | Jun 30, 2023 |
| West Suffield, CT | Jim T's Plumbing Service, LLC | E31A511A85 | Apprenticeship Sponsor | Jun 30, 2022 |
| Glastonbury, CT | JJK Electric LLC | D01194BF18 | Apprenticeship Sponsor | Jun 30, 2026 |
| Deep River, CT | JJL Electric, LLC | 4AD522BE19 | Apprenticeship Sponsor | Jun 30, 2019 |
| Thomaston, CT | JK Energy Solutions LLC | E065CB34EB | Apprenticeship Sponsor | Jun 30, 2027 |
| Glastonbury, CT | JKS Systems | F0DEE034CD | Apprenticeship Sponsor | Jun 30, 2027 |
| Enfield, CT | JL Mechanical Services, LLC | 12D5CEE9DD | Apprenticeship Sponsor | Jun 30, 2023 |
| New Fairfield, CT | JL Sousa Electric LLC | 0182FBBB88 | Apprenticeship Sponsor | Jun 30, 2027 |
| West Haven, CT | JLH Electrical, LLC | 58F4FFF514 | Apprenticeship Sponsor | Jun 30, 2024 |
| Woodbury, CT | JLL MECHANICAL | 09E7D2088E | Apprenticeship Sponsor | Jun 30, 2027 |
| New Britain, CT | JLS Design, LLC | 26D457EF94 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Sherman, CT | JLS Electric, Inc. | 1CDB7A74EB | Apprenticeship Sponsor | Jun 30, 2027 |
| Kensington, CT | JMB Plumbing, LLC | A57086D612 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Agawam, MA | JMC Electrical Solutions, Inc | 2F40C47183 | Apprenticeship Sponsor | Jun 30, 2027 |
| Newtown, CT | JMC Plumbing & Heating, LLC | FF911B8528 | Apprenticeship Sponsor | Jun 30, 2020 |
| Sandy Hook, CT | JMJ Electric, LLC | DC6FA3BF26 | Apprenticeship Sponsor | Jun 30, 2009 |
| Stamford, CT | JMK Plumbing and Heating, LLC | 73512D3E6C | Apprenticeship Sponsor | Jun 30, 2026 |
| Bridgeport, CT | JML ELECTRICAL SERVICES LLC | 106B53B298 | Apprenticeship Sponsor | Jun 30, 2027 |
| Stamford, CT | JN Plumbing LLC | A4FFEC50E9 | Apprenticeship Sponsor | Jun 30, 2014 |
| Waterbury, CT | JND Plumbing & Mechanical | AC39A1D62D | Apprenticeship Sponsor | Jun 30, 2026 |
| Stamford, CT | JNR Plumbing, LLC. | 7537912C2F | Apprenticeship Sponsor | Jun 30, 2027 |
| New Britain, CT | JNT Mechanical Services | 532723E043 | Apprenticeship Sponsor | Jun 30, 2021 |
| New Haven, CT | Jo Bruno Hair | 0309F7E099 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bristol, CT | JO-VEK TOOL & DIE MANUFACTURING CO.,INC. | 9EF2719217 | Apprenticeship Sponsor | Jun 30, 2027 |
| Monroe, CT | Joe Aversa Plumbing & Well Pumps, LLC | B8056318C0 | Apprenticeship Sponsor | Jun 30, 2015 |
| Rocky Hill, CT | Joe Budnicks Cody Plumbing, LLC | FFEE62B54F | Apprenticeship Sponsor | Jun 30, 2024 |
| Woodbury, CT | Joe Simpson Plumbing & Heating | 5ADC83779D | Apprenticeship Sponsor | Jun 30, 2027 |
| Shelton, CT | Joe Tassitano Plumbing & Heating Co. | 59C096D66C | Apprenticeship Sponsor | Jun 30, 2008 |
| Newtown, CT | Joe The Plumber | 0AB5711C73 | Apprenticeship Sponsor | Jun 30, 2027 |
| Plymouth, CT | JOE'S SANITATION LLC | CA62ED07FE | Home Improvement Contractor + 2 more | Mar 31, 2027 |
| Oxford, CT | John A. Pierce Plumbing & Heating LLC | D702522D0A | Apprenticeship Sponsor | Jun 30, 2011 |
| Seymour, CT | John Allen Company INC DBA - Allen's Plumbing Supply | 13F058C38F | Apprenticeship Sponsor | Jun 30, 2014 |
| Seymour, CT | John Anroman Plumbing | 4CAB76C84E | Apprenticeship Sponsor | Jun 30, 2004 |
| Great Barrington, MA | JOHN B HULL INC | 6A67D082E7 | Home Heating Fuel Dealer + 2 more | Sep 30, 2027 |
| Wolcott, CT | JOHN BASILE DBA | FD6CEFEC21 | Apprenticeship Sponsor | Jun 30, 2022 |
| Norfolk, CT | John C. Bazzano & Son, Inc. | F80C8A6FB2 | Apprenticeship Sponsor | Jun 30, 2008 |
| Wolcott, CT | John Doyle's Plumbing & Heating, LLC | F359F2BCE8 | Apprenticeship Sponsor | Jun 30, 2020 |
| Plymouth, CT | John Gervickas Plumbing & Heating | 873D6746DE | Apprenticeship Sponsor | Jun 30, 2016 |
| Shelton, CT | JOHN J BRENNAN CONSTRUCTION CO INC | 31A0B96D25 | Professional Engineering Firm + 4 more | Nov 30, 2027 |
| Brookfield, CT | John J. Sweeney Co. LLC | 175C514235 | Apprenticeship Sponsor | Jun 30, 2006 |
| Greenwich, CT | John Portanova Contracting | 3BF784381C | Apprenticeship Sponsor | Jun 30, 2008 |
| Lisbon, CT | JOHN R. MORGAN, INC. | 22B142053E | Apprenticeship Sponsor | Jun 30, 2023 |
| Plymouth, MA | John Ryan Company, Inc. | EE4F41A275 | Apprenticeship Sponsor | Jun 30, 2008 |
| Milford, CT | John's Electrical Service Inc. | 99E7DE6424 | Apprenticeship Sponsor | Jun 30, 2009 |
| Bloomfield, CT | John's Plumbing & Heating, LLC | 25D37C94DE | Apprenticeship Sponsor | Jun 30, 2016 |
| Southington, CT | Johnson & Johnson Medical | 97D270D38C | Apprenticeship Sponsor | Jun 30, 2004 |
| Rocky Hill, CT | Johnson Controls Fire Protection, LP | EDA556ED3F | Apprenticeship Sponsor | Jun 30, 2027 |
| Rocky Hill, CT | JOHNSON CONTROLS INC | 21849751C9 | Major Contractor + 1 more | Jun 30, 2027 |
| New London, CT | Johnson Controls Inc. | 4E7987FA3D | Apprenticeship Sponsor | Jun 30, 2008 |
| Wallingford, CT | Johnson Controls Security Systems & LO 90 and IBEW Local 90 JATC | 7C0AA4883A | Apprenticeship Sponsor | Jun 30, 2025 |
| Windsor, CT | Johnson Controls, Inc. | F15C6B1F89 | Apprenticeship Sponsor | Jun 30, 2010 |
| Stamford, CT | Johnson Plumbing, Heating & Engeneering, LLP | F4FBFCAC50 | Apprenticeship Sponsor | Jun 30, 2027 |
| North Hvane, CT | JOHNSTONE COMPANY INC | 5F72D823A0 | Apprenticeship Sponsor | Jun 30, 2026 |
| Bristol, CT | Jon's Plumbing, LLC | 80CA624263 | Apprenticeship Sponsor | Jun 30, 2025 |
| Winsted, CT | JONATHAN R HABACKER PLUMBING AND HEATING | BA86DB310B | Apprenticeship Sponsor | Jun 30, 2027 |
| Groton, CT | Jones Lang LaSalle Americas, Inc. - Pfizer | A2C82D12DF | Apprenticeship Sponsor | Jun 30, 2012 |
| Hartford, CT | Jones Lang LaSalle Services, Inc. | C6A2E340C9 | Apprenticeship Sponsor | Jun 30, 2027 |
| West Suffield, CT | Jones Service & Repair | 42D26900B3 | Apprenticeship Sponsor | Jun 30, 2007 |
| Waterford, CT | Jordan Brook Irrigation, LLC. | F3F9E6EC8F | Apprenticeship Sponsor | Jun 30, 2014 |
| Bridgeport, CT | Jordan Electric, LLC | 46C23CE712 | Apprenticeship Sponsor | Jun 30, 2019 |
| Waterford, CT | Jordan Village Barbershop & Salon | 4178EB2389 | Apprenticeship Sponsor | Jun 30, 2023 |
| Hartford, CT | Joseph Abbate Plumbing & Heating Inc. | 67194647EA | Apprenticeship Sponsor | Jun 30, 2012 |
| Wethersfield, CT | JOSEPH BORDIERI ELECTRIC, LLC | 6C7B257C7B | Apprenticeship Sponsor | Jun 30, 2026 |
| Norwalk, CT | Joseph Enterprises, LLC DBA The Cut | 3968E83C01 | Apprenticeship Sponsor | Jun 30, 2027 |
| West Haven, CT | Joseph G. Michel & Sons | 9DF8450294 | Apprenticeship Sponsor | Jun 30, 2007 |
| Shelton, CT | Joseph Kmetz Plumbing LLC | C953571427 | Apprenticeship Sponsor | Jun 30, 2006 |
| Rowayton, CT | Joseph S. Sabino Plumbing & Heating, LLC | EB8306D4C4 | Apprenticeship Sponsor | Jun 30, 2027 |
| Middlebury, CT | Josh the Electrician, LLC | 32BD7B3FF7 | Apprenticeship Sponsor | Jun 30, 2027 |
| South Windsor, CT | Joshconz Company LLC | 7879561143 | Apprenticeship Sponsor | Jun 30, 2027 |
| Wolcott, CT | Jovan Machine Co., Inc. | 3DA1AC3A84 | Apprenticeship Sponsor | Jun 30, 2016 |
| Monroe, CT | JP Guerra | 0FB3C42763 | Apprenticeship Sponsor | Jun 30, 2027 |
| Stafford Springs, CT | JP Mechanical Services, LLC | 248EB643C5 | Apprenticeship Sponsor | Jun 30, 2005 |
| Woodbury, CT | JP Parks Heating and Cooling, LLC | EDAF869D6B | Apprenticeship Sponsor | Jun 30, 2026 |
| Shelton, CT | JP's Plumbing and Heating, LLC | DC832B9B58 | Apprenticeship Sponsor | Jun 30, 2020 |
| Wallingford, CT | JPM Air Conditioning & Heating | E85BAE0B35 | Apprenticeship Sponsor | Jun 30, 2004 |
| Plainville, CT | JR Heating & Cooling, LLC | 4D4FE1156B | Apprenticeship Sponsor | Jun 30, 2027 |
| Burlington, CT | JR Morrison Electric LLC | 3D2E02BF29 | Apprenticeship Sponsor | Jun 30, 2025 |
| Norwalk, CT | JR's Plumbing & Heating LLC | 3BDA76EC7D | Apprenticeship Sponsor | Jun 30, 2011 |
| Sterling, CT | JRM Electric LLC | DBF957E75A | Apprenticeship Sponsor | Jun 30, 2027 |
| Manchester, CT | JRT Electric, LLC | 4614B9C1BF | Apprenticeship Sponsor | Jun 30, 2027 |
| Moosup, CT | JRW SERVICES LLC 3 AMIGOS PLUMBING OF CT | C62EBFBAB5 | Apprenticeship Sponsor + 1 more | Jun 30, 2028 |
| Columbia, CT | JS Energy Systems of CT Inc. | 1DD8DAAF4E | Apprenticeship Sponsor | Jun 30, 2010 |
| Willimantic, CT | JS Stylez Barbershop, LLC | 7D246C1CD7 | Apprenticeship Sponsor | Jun 30, 2020 |
| Plantsville, CT | JSA Electric LLC | 9B4AA4DA80 | Apprenticeship Sponsor | Jun 30, 2014 |
| East Granby, CT | JSL Heating & Cooling, LLC | 597C304498 | Apprenticeship Sponsor | Jun 30, 2025 |
| Bridgeport, CT | JT Electrical Services, LLC | 8291FE3188 | Apprenticeship Sponsor | Jun 30, 2024 |
| Middletown, CT | JTN Electric, LLC | 62547AE548 | Apprenticeship Sponsor | Jun 30, 2024 |
| South Windsor, CT | JTP Plumbing Inc. | 37D75C3C08 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Waterford, CT | Juan-Co Plumbing, LLC | FE422C787C | Apprenticeship Sponsor | Jun 30, 2025 |
| Bridgeport, CT | Judge Electric, Inc. | ABBD4BB470 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Colchester, CT | Judge Pro-Tech LLC | EF4BE56401 | Apprenticeship Sponsor | Jun 30, 2019 |
| Milford, CT | Junga Electric | A73765B4CD | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Monroe, CT | Jurman Metrics, Inc. | 8CA4C9197E | Apprenticeship Sponsor | Jun 30, 2009 |
| East Haven, CT | Just In Time Mechanical, LLC | DB595319C3 | Apprenticeship Sponsor | Jun 30, 2025 |
| Waterbury, CT | Just Right Heating & Cooling, LLC | D9E381CEF7 | Apprenticeship Sponsor | Jun 30, 2023 |
| Jewett Citty, CT | Justin's Barber Studio, LLC | 82178EF16E | Apprenticeship Sponsor | Jun 30, 2025 |
| Wallingford, CT | JV Mechanical LLC | D65ECCE0C0 | Apprenticeship Sponsor | Jun 30, 2004 |
| Bristol, CT | K & E Electric Inc. | D02F21BEBC | Apprenticeship Sponsor | Jun 30, 2023 |
| Waterford, CT | K & F Plumbing, LLC | 48E93090C8 | Apprenticeship Sponsor | Jun 30, 2027 |
| Northfield, CT | K & M PLUMBING LLC | DBB2BE9F19 | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| Bozrah, CT | K & N Electric, LLC | 4160138A52 | Apprenticeship Sponsor | Jun 30, 2010 |
| Milford, CT | K & R Mechanical, Inc. | C6C3F62B8C | Apprenticeship Sponsor | Jun 30, 2016 |
| New Britain, CT | K & R Precision Grinding, LLC | 7FD2DBF147 | Apprenticeship Sponsor | Jun 30, 2021 |
| Waterbury, CT | K & S Systems, LLC | A5DFF6D9AC | Apprenticeship Sponsor | Jun 30, 2007 |
| Hampden, MA | K Sacco Electric Inc. | F6DF10A33A | Apprenticeship Sponsor | Jun 30, 2027 |
| Plainville, CT | K-Co Electric, Inc. | F7C98A257C | Apprenticeship Sponsor | Jun 30, 2026 |
| Bethel, CT | K-Man Glass Corp. | 15AB61FCBE | Apprenticeship Sponsor | Jun 30, 2027 |
| New Haven, CT | K. Brodner & Sons Inc. | 3228AC92B3 | Apprenticeship Sponsor | Jun 30, 2008 |
| Shelton, CT | K. Lundgren & Sons, Inc. | F264D4F3E1 | Apprenticeship Sponsor | Jun 30, 2014 |
| New Milford, CT | K.B. Plumbing | 08451677FF | Apprenticeship Sponsor | Jun 30, 2027 |
| Mystic, CT | K.D. Electric | 8069892F1C | Apprenticeship Sponsor | Jun 30, 2007 |
| South Windsor, CT | K.F. Construction, LLC | 1C3F4AFF71 | Apprenticeship Sponsor | Jun 30, 2007 |
| Orange, CT | K.T.M. Electrical Construction, LLC | FF2679D509 | Apprenticeship Sponsor | Jun 30, 2027 |
| Seymour, CT | K.W.I.K. Electric LLC | A6F58A9E53 | Apprenticeship Sponsor | Jun 30, 2023 |
| Norwalk, CT | Kaiser Battistone | B3398B1587 | Apprenticeship Sponsor | Jun 30, 2016 |
| Bloomfield, CT | KAMATICS CORPORATION | 25A4401071 | Apprenticeship Sponsor | Jun 30, 2027 |
| Thomaston, CT | KAMS L.L.C | 94AC83177D | Apprenticeship Sponsor | Jun 30, 2026 |
| Monroe, CT | Karch Electrical Contractors | ED519A4009 | Apprenticeship Sponsor | Jun 30, 2012 |
| Somers, CT | Kariden Electric Inc. | 21A3D86E01 | Apprenticeship Sponsor | Jun 30, 2024 |
Alphabetical order — this site ranks no one. Businesses with at least one active credential in the Connecticut eLicensing file of October 1, 2026. How to read this.