Apprenticeship Sponsor — page 3 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 |
|---|---|---|---|---|
| Avon, CT | AVON PLUMBING & HEATING CO INC | 169F233016 | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| Branford, CT | AWB Electrical Services, LLC | F08D1C3AC9 | Apprenticeship Sponsor | Jun 30, 2015 |
| Durham, CT | AWS Electric, LLC | FA687C5042 | Apprenticeship Sponsor | Jun 30, 2024 |
| Vernon, CT | AWT Electric | D7E2FDA745 | Apprenticeship Sponsor | Jun 30, 2023 |
| South Glastonbury, CT | AYS & I, Inc. dba American Yard Service & Irrigation | 635D35FD78 | Apprenticeship Sponsor | Jun 30, 2027 |
| South Windsor, CT | B & B Mechanical, LLC | D67D536065 | Apprenticeship Sponsor | Jun 30, 2024 |
| North Haven, CT | B & B Plumbing & Heating, LLC | 608A63C5BF | Apprenticeship Sponsor | Jun 30, 2025 |
| West Hartford, CT | B & B Security | D3F5C907ED | Apprenticeship Sponsor | Jun 30, 2018 |
| Broad Brook, CT | B & B Sheetmetal LLC | F3DD60EAF6 | Apprenticeship Sponsor | Jun 30, 2018 |
| Bristol, CT | B & B Tool Co., Inc. | 0EADF5AE4C | Apprenticeship Sponsor | Jun 30, 2014 |
| New Milford, CT | B & D Controlled Air Corp. | C788F4901C | Apprenticeship Sponsor | Jun 30, 2027 |
| East Haven, CT | B & D Electric, Inc. | 9F0EBFD978 | Apprenticeship Sponsor | Jun 30, 2008 |
| Old Lyme, CT | B & E Electric, LLC. | 119BD2BBE2 | Apprenticeship Sponsor | Jun 30, 2012 |
| Monroe, CT | B & F Construction Co. LLC | 701EAA7B76 | Apprenticeship Sponsor | Jun 30, 2008 |
| Newtown, CT | B & F Plumbing & Heating, Inc. | BBB203AF15 | Apprenticeship Sponsor | Jun 30, 2008 |
| Cheshire, CT | B & G Electrical Co. | 2FEAD5D0C7 | Apprenticeship Sponsor | Jun 30, 2009 |
| New Britain, CT | B & J Construction Company | 53A74B53B4 | Apprenticeship Sponsor | Jun 30, 2027 |
| Old Saybrook, CT | B & L CONSTRUCTION INC | 32FF9207F1 | Major Contractor + 3 more | Jun 30, 2027 |
| Thomaston, CT | B & L Heating & Cooling, LLC | 78DC3E3390 | Apprenticeship Sponsor | Jun 30, 2026 |
| Higganum, CT | B & M ELECTRICAL AND SECURITY, LLC | 405912C76A | Apprenticeship Sponsor | Jun 30, 2026 |
| Newington, CT | B & N Aerospace Inc. | EF80371C84 | Apprenticeship Sponsor | — |
| Westport, CT | B & R Electric, LLC | 6C03C2D75A | Apprenticeship Sponsor | Jun 30, 2024 |
| Stratford, CT | B & R Electrical Contractors LLC | 17D7E43F6F | Apprenticeship Sponsor | Jun 30, 2009 |
| Thomaston, CT | B & R Plumbing LLC | 9FF1608334 | Apprenticeship Sponsor | Jun 30, 2010 |
| Centerbrook, CT | B & S Plumbing & Heating, LLC | 273A3155E8 | Apprenticeship Sponsor | Jun 30, 2008 |
| Cheshire, CT | B & S Sheetmetal Co., Inc. | CB757474C9 | Apprenticeship Sponsor | Jun 30, 2027 |
| Oakdale, CT | B & W PAVING & LANDSCAPING, LLC | 8E37BA9877 | Pesticide Application Business Registration + 5 more | Aug 31, 2027 |
| Plainville, CT | B T Plumbing LLC | 850A28AC69 | Apprenticeship Sponsor | Jun 30, 2027 |
| Derby, CT | B&M Heating and Cooling, LLC | E84324154C | Apprenticeship Sponsor | Jun 30, 2027 |
| Rocky Hill, CT | B-G Mechanical Service, Inc. | A32478E769 | Apprenticeship Sponsor | Jun 30, 2012 |
| Seymour, CT | B. E. Stevenson Plumbing & Heating | C76FC35335 | Apprenticeship Sponsor | Jun 30, 2006 |
| Norfolk, CT | B. Funk Plumbing, LLC | 2924666219 | Apprenticeship Sponsor | Jun 30, 2020 |
| Mystic, CT | B. JAGS ELECTRIC, LLC | B583CD00EC | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Waterbury, CT | B. Kane Electric Co. Inc. | B2F7429DBE | Apprenticeship Sponsor | Jun 30, 2027 |
| Brookfield, CT | B. McCormack Plumbing & Heating, LLC | 15A297777B | Apprenticeship Sponsor | Jun 30, 2019 |
| Bethany, CT | B. Page Electric, LLC | C4AD1D6D60 | Apprenticeship Sponsor | Jun 30, 2020 |
| Wolcott, CT | B. W. Platt Electrical Construction Co. | A3DC9C19CD | Apprenticeship Sponsor | Jun 30, 2005 |
| Stamford, CT | B.A.M. Electric, LLC | AA870F624F | Apprenticeship Sponsor | Jun 30, 2025 |
| Kent, CT | B.L. Gleason & Son Inc. | BDE44D8DBF | Apprenticeship Sponsor | Jun 30, 2027 |
| West Hartford, CT | B.T. Lindsay & Co., Inc. | AA01609603 | Apprenticeship Sponsor | Jun 30, 2025 |
| New Hartford, CT | B.W. Morse and Sons, Inc. | F008279533 | Apprenticeship Sponsor | Jun 30, 2012 |
| Killingworth, CT | Back East Mechanical LLC | 72AAF6AB6C | Apprenticeship Sponsor | Jun 30, 2027 |
| Goshen, CT | Backwoods Electrical Service LLC | 43E300E15C | Apprenticeship Sponsor | Jun 30, 2008 |
| East Hampton, CT | Badger Plumbing, LLC | C32A3CEFE8 | Apprenticeship Sponsor | Jun 30, 2027 |
| Milford, CT | Badger's Plumbing & Heating, LLC | 8A1DF6CF7D | Apprenticeship Sponsor | Jun 30, 2027 |
| East Haddam, CT | Bafumi Electric, LLC | 5D247D2320 | Apprenticeship Sponsor | Jun 30, 2027 |
| Ellington, CT | BAHLER ELECTRIC LLC | CD3D01C48D | Apprenticeship Sponsor | Jun 30, 2027 |
| Willington, CT | Bailey Electric Co., Inc. | 85F180140F | Apprenticeship Sponsor | Jun 30, 2006 |
| Plantsville, CT | Bailey Telecommunications Services LLC | E64D3FDA33 | Apprenticeship Sponsor | Jun 30, 2007 |
| New Hartford, CT | Bakerville Plumbing & Heating LLC | 45EE66BAD7 | Apprenticeship Sponsor | Jun 30, 2009 |
| Stratford, CT | Balanced Properties, LLC | F61F0AD5BA | Apprenticeship Sponsor | Jun 30, 2014 |
| East Granby, CT | BALDIS & FRANK, INC. DBA FIRE AND ICE HVAC | 0657BE8549 | Apprenticeship Sponsor | Jun 30, 2027 |
| Groton, CT | Balfour Beatty Military Housing Mgmt LLC | F6D17EB155 | Apprenticeship Sponsor | Jun 30, 2015 |
| Tolland, CT | BANNER WATER LLC | 7CCB1026DF | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Litchfield, CT | Bantam Electric Co. | C2C1B7688B | Apprenticeship Sponsor | Jun 30, 2005 |
| Bantam, CT | Bantam Sheetmetal LLC | 0D18F171D5 | Apprenticeship Sponsor | Jun 30, 2009 |
| Bantam, CT | Bantam Supply Co., Inc. DBA - Bantam Fuel | 0B6D42B508 | Apprenticeship Sponsor | Jun 30, 2022 |
| North Haven, CT | BANTON CONSTRUCTION COMPANY INC | ED798E56E9 | Major Contractor + 3 more | Jun 30, 2027 |
| Stratford, CT | Barber "A Boutique Barbershop" | C79716BC26 | Apprenticeship Sponsor | Jun 30, 2019 |
| Bozrah, CT | Barber Electric Inc. | 2C84E8FF96 | Apprenticeship Sponsor | Jun 30, 2027 |
| Ellington, CT | BARBER UTILITIES LLC | 5531F51C44 | Operator of Weighing & Measuring Devices + 2 more | Jul 31, 2027 |
| Oakville, CT | BARIBAULT OIL | 202344E880 | Home Heating Fuel Dealer + 2 more | Sep 30, 2027 |
| Windsor, CT | Barnes Group, Inc./Barnes Aerospace | A2F1A17ABD | Apprenticeship Sponsor | Jun 30, 2020 |
| Middletown, CT | Barnhart Crane & Rigging Co. JATC 478 | 090B4C4E5B | Apprenticeship Sponsor | Jun 30, 2027 |
| Derby, CT | BARNUM ENGINEERED SYSTEMS, INC. | D89B1E9BFE | Apprenticeship Sponsor | Jun 30, 2024 |
| Glastonbury, CT | Barrett Electric, INC | 2E9514601D | Apprenticeship Sponsor | Jun 30, 2005 |
| Orange, CT | Barrett Electrical Contracting, LLC | F8331EB8D9 | Apprenticeship Sponsor | Jun 30, 2018 |
| Danielson, CT | Barrette Electric Inc. | 5E2FD0180A | Apprenticeship Sponsor | Jun 30, 2007 |
| Brooklyn, CT | Barrette Mechanical LLC | 987B972C15 | Apprenticeship Sponsor | Jun 30, 2015 |
| Plainville, CT | Barrieau Oil Co. | 5E0E250E95 | Apprenticeship Sponsor | Jun 30, 2022 |
| Norwalk, CT | Barrios Electric, LLC | 70DFD41540 | Apprenticeship Sponsor | Jun 30, 2022 |
| Auburn, MA | Barrows Electric Inc. | 24EC6CFCFE | Apprenticeship Sponsor | Jun 30, 2011 |
| Preston, CT | BARRY ASSOCIATES INC | 7EC550A9F8 | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| Torrington, CT | Barry Cone's Heating & Air Conditioning, Inc. | 68C427E041 | Apprenticeship Sponsor | Jun 30, 2027 |
| Torrington, CT | Barry's Plumbing & Heating | F1616763C0 | Apprenticeship Sponsor | Jun 30, 2014 |
| Enfield, CT | Bartholomew Electric LLC | 7245F335C9 | Apprenticeship Sponsor | Jun 30, 2027 |
| Ansonia, CT | Bartlett Electric LLC | 40D710BA8D | Apprenticeship Sponsor | Jun 30, 2011 |
| New London, CT | Bartol Heating & Cooling, Inc. | 5FC61D1CA4 | Apprenticeship Sponsor | Jun 30, 2025 |
| West Hartford, CT | Bartone Plumbing and Heating, LLC | 1346F6EACC | Apprenticeship Sponsor | Jun 30, 2024 |
| Bolton, CT | Bascom Technologies LLC | 625B586D33 | Apprenticeship Sponsor | Jun 30, 2006 |
| Southington, CT | Bassett Electric, Inc. | EDBF378648 | Apprenticeship Sponsor | Jun 30, 2013 |
| Ashley Falls, MA | Bassett Heating and Air Conditioning, LLC | DE15853E29 | Apprenticeship Sponsor | Jun 30, 2027 |
| Uncasville, CT | Bassetti Electric, LLC | 9856BF6B73 | Apprenticeship Sponsor | Jun 30, 2027 |
| Hartford, CT | Basteino Electric, LLC | 35256C05B0 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bristol, CT | Bauer, Inc. | 7A30908745 | Apprenticeship Sponsor | Jun 30, 2026 |
| Branford, CT | Bausch & Stroebel Machine Company | E976808BBC | Apprenticeship Sponsor | — |
| Clinton, CT | Bausch Advanced Technologies, Inc. | 48DDF6BC56 | Apprenticeship Sponsor | Jun 30, 2024 |
| Easton, CT | Bayberry Electric | 68F849645B | Apprenticeship Sponsor | Jun 30, 2015 |
| West Haven, CT | BAYBROOK REMODELERS INCORPORATED | 0BB8967F9E | Apprenticeship Sponsor | Jun 30, 2021 |
| Bozrah, CT | BC Heating & Cooling LLC | D490DCA79A | Apprenticeship Sponsor | Jun 30, 2023 |
| Bloomfield, CT | BCL Electric, LLC | E72205BB1A | Apprenticeship Sponsor | Jun 30, 2024 |
| Greenwich, CT | BD Electrical Contractors Inc. | FCFF96DB76 | Apprenticeship Sponsor | Jun 30, 2009 |
| Wethersfield, CT | BD Plumbing & Heating, LLC | D72817936D | Apprenticeship Sponsor | Jun 30, 2013 |
| Andover, CT | Beacher E. McNeal, Inc. | 2B6ACA7179 | Apprenticeship Sponsor | Jun 30, 2027 |
| Milldale, CT | BEACON ELECTRIC INC | 99B3A84107 | Major Contractor + 1 more | Jun 30, 2027 |
| Granby, CT | Beacon Mechanical Service, LLC | 8CD8261F91 | Apprenticeship Sponsor | Jun 30, 2022 |
| Milford, CT | Bead Industries, Inc. | 01B16E8B01 | Apprenticeship Sponsor | Jun 30, 2021 |
| Brookfield, CT | Beardsley Plumbing LLC | 3F31CBA207 | Apprenticeship Sponsor | Jun 30, 2005 |
| North Stonington, CT | Beaudreau Electric | 36A786D5E4 | Apprenticeship Sponsor | Jun 30, 2008 |
| Chicopee, MA | Beaudry Electric Inc. | ED3B7F8C9E | Apprenticeship Sponsor | Jun 30, 2022 |
| East Hartford, CT | Beaupre Plumbing & Heating | 459C133660 | Apprenticeship Sponsor | Jun 30, 2011 |
| Baltic, CT | Beaver Brook Barber Shop | 1ECA889B2F | Apprenticeship Sponsor | Jun 30, 2021 |
| Uncasville, CT | Beaver Electric LLC | CEF2073AC3 | Apprenticeship Sponsor | Jun 30, 2027 |
| Uxbridge, MA | BEC Services LTD | 308A866218 | Apprenticeship Sponsor | Jun 30, 2024 |
| Manchester, CT | Becker Electric | 2FE81470F5 | Apprenticeship Sponsor | Jun 30, 2012 |
| West Hartford, CT | Becker’s HVAC & Electrical Service's | CDFF87C64F | Apprenticeship Sponsor | Jun 30, 2027 |
| Stratford, CT | Beckron Heating and Cooling, Inc. | 19DF8AB8C6 | Apprenticeship Sponsor | Jun 30, 2021 |
| Canaan, CT | BECTON DICKINSON COMPANY | 2F00AE60CF | Manufacturer of Drugs, Cosmetics & Medical Devices - In State + 1 more | Jun 30, 2027 |
| East Windsor, CT | BEEBE LANDSCAPE SERVICES, INC. | FCC5522A61 | Pesticide Application Business Registration + 2 more | Aug 31, 2027 |
| Torrington, CT | Beech Air | F390839A24 | Apprenticeship Sponsor | Jun 30, 2018 |
| Oakdale, CT | Beetham Quality Pump and Plumbing | DAF18D1834 | Apprenticeship Sponsor | Jun 30, 2016 |
| Stamford, CT | Belair Electric Inc. | 05BFBBA7C9 | Apprenticeship Sponsor | Jun 30, 2018 |
| Danbury, CT | BELIMO US, INC. | 1BFA2DC60D | Apprenticeship Sponsor | Jun 30, 2027 |
| Torrington, CT | Bell Electrical Contractors, LLC | 6AAD00ECEE | Apprenticeship Sponsor | Jun 30, 2027 |
| Old Saybrook, CT | Bella Electric | A6A89C28DD | Apprenticeship Sponsor | Jun 30, 2006 |
| Bristol, CT | Bella Mia salon | 5224CC772D | Apprenticeship Sponsor | Jun 30, 2028 |
| Stamford, CT | Bella Plumbing & Heating, Inc. | 427D20B251 | Apprenticeship Sponsor | Jun 30, 2025 |
| Ridgefield, CT | Bellagamba Electric, Inc. | 7F6B5847E0 | Apprenticeship Sponsor | Jun 30, 2027 |
| Orange, CT | Bellegarde Electric LLC | BAB6116499 | Apprenticeship Sponsor | Jun 30, 2027 |
| Southington, CT | Bellinghausen Electrical Contractors, LLC | 6F4F21B405 | Apprenticeship Sponsor | Jun 30, 2014 |
| Wallingford, CT | BELLISIMA SALON LLC | 46226330B8 | Apprenticeship Sponsor | Jun 30, 2026 |
| Morris, CT | BELLMAY PLUMBING & HEATING INC. | 0F0B5B2ACB | Apprenticeship Sponsor | Jun 30, 2027 |
| Waterbury, CT | BELSO DESIGN & BUILD INC | C5EA3DC09A | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| Jewett City, CT | Beltran Electric LLC | 01A5414197 | Apprenticeship Sponsor | Jun 30, 2027 |
| Milford, CT | Ben Carreta, LLC dba Ben's Heating & Cooling | B9BDEA61F6 | Apprenticeship Sponsor | Jun 30, 2020 |
| Wallingford, CT | Bencar Building Systems, LLC | C957E141D0 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Lebanon, CT | BENDER'S OIL SERVICE INC | 110BFF5D5B | Motor Fuel Quality Registration + 1 more | Oct 31, 2027 |
| Old Lyme, CT | Benedetto Heating & Air Conditioning, LLC | E88B958DDE | Apprenticeship Sponsor | Jun 30, 2027 |
| Andover, CT | BENJAMIN FRANKLIN PLUMBING | 872F87A7D4 | Apprenticeship Sponsor | Jun 30, 2027 |
| Southbury, CT | Bennett Electric | FB4A228791 | Apprenticeship Sponsor | Jun 30, 2021 |
| South Glastonbury, CT | Bentley Electronics Systems | 978F28E8AB | Apprenticeship Sponsor | Jun 30, 2023 |
| Westbrook, CT | Bentley Heating & Air Conditioning, LLC | 33C033B696 | Apprenticeship Sponsor | Jun 30, 2013 |
| Waterford, CT | BENVENUTI OIL | 392F9502C2 | Motor Fuel Quality Registration + 4 more | Oct 31, 2027 |
| Springfield, MA | Berg-Rulnick Electric Co., Inc. | 1C8DB13AEE | Apprenticeship Sponsor | Jun 30, 2006 |
| Bethel, CT | Berglund Plumbing & Heating LLC | 8F8DCDA9AA | Apprenticeship Sponsor | Jun 30, 2010 |
| Harwinton, CT | BERKSHIRE ELECTRIC & CONSTRUCTION LLC | 9DB85902C4 | New Home Construction Contractor + 1 more | Mar 31, 2027 |
| Canaan, CT | Berkshire Electric, LLC | 133EE0EA3F | Apprenticeship Sponsor | Jun 30, 2021 |
| Torrington, CT | Berkshire Electronic Protection | 9779E56680 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bethel, CT | Berkshire Refrigeration Service Inc. | 576D377AC1 | Apprenticeship Sponsor | Jun 30, 2027 |
| Darien, CT | Bernardo Heating Plus, LLC | 15EF527A29 | Apprenticeship Sponsor | Jun 30, 2007 |
| Danbury, CT | Bernie's Air Conditioning & Heating | D1C8C4BD53 | Apprenticeship Sponsor | Jun 30, 2011 |
| New London, CT | Bernie's Fuel Oil Company Inc. | 10D9057878 | Apprenticeship Sponsor | Jun 30, 2010 |
| Wallingford, CT | Berntsen Electric, LLC | B2C1E2E614 | Apprenticeship Sponsor | Jun 30, 2026 |
| Bethel, CT | Bertozzi Electric, LLC | DB6FC04314 | Apprenticeship Sponsor | Jun 30, 2027 |
| Wilton, CT | Bespoke Electric | B7EFD001F4 | Apprenticeship Sponsor | Jun 30, 2027 |
| Westport, CT | Besson Plumbing & Heating, Inc. | 06E7C81CF9 | Apprenticeship Sponsor | Jun 30, 2007 |
| Trumbull, CT | Best Electrical Contracting, LLC | 4FA6FB2F07 | Apprenticeship Sponsor | Jun 30, 2015 |
| Pawcatuck, CT | BEST ENERGY | CDC97B9D1C | Home Heating Fuel Dealer + 2 more | Sep 30, 2027 |
| Waterbury, CT | BEST HEATING & COOLING, LLC | 4272ED8136 | Apprenticeship Sponsor | Jun 30, 2025 |
| Columbia, CT | Best Way Electric LLC | 96F6AF851B | Apprenticeship Sponsor | Jun 30, 2027 |
| Bethany, CT | Bethany Electric, LLC | 0EB0004895 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bethel, CT | Bethel Plumbing & Heating, LLC | E894783E05 | Apprenticeship Sponsor | Jun 30, 2006 |
| East Hartford, CT | Better & Better Plumbing & Heating, Inc. | 2478F5BE87 | Apprenticeship Sponsor | Jun 30, 2007 |
| Unionville, CT | BFZ Electric, LLC | AD9EB228A7 | Apprenticeship Sponsor | Jun 30, 2027 |
| Cromwell, CT | BHR Heating & Cooling, LLC | A7EBDB5813 | Apprenticeship Sponsor | Jun 30, 2010 |
| Niantic, CT | Biagiarelli Electric, LLC | 6EF14AB146 | Apprenticeship Sponsor | Jun 30, 2027 |
| Milford, CT | BIC Consumer Products Manufacturing Co. | 6E87B28B05 | Apprenticeship Sponsor | Jun 30, 2019 |
| Chicopee, MA | BIERMANN SERVICES INC | F19CBAFD22 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Shelton, CT | Big Bill's Plumbing & Heating | 39B52ABD74 | Apprenticeship Sponsor | Jun 30, 2022 |
| Springfield, MA | Big Y Foods, Inc. | 8129DC62A6 | Apprenticeship Sponsor | Jun 30, 2027 |
| Kensington, CT | Bigelow Electric, Inc. | D8FA8DA6F2 | Apprenticeship Sponsor | Jun 30, 2027 |
| Brookfield, CT | Bigelow Plumbing & Heating | 5D624A945E | Apprenticeship Sponsor | Jun 30, 2007 |
| Lebanon, CT | Bigelow Plumbing, LLC | D540F19D82 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bethany, CT | BIGSTEVE BARBER CRAFTSMAN | 3DBC1BC4FA | Apprenticeship Sponsor | Jun 30, 2026 |
| Newington, CT | BIJ Plumbing & Heating LLC | 22DEB89FAB | Apprenticeship Sponsor | Jun 30, 2009 |
| North Stonington, CT | Bill Aitken Heating, LLC | 29E6072A22 | Apprenticeship Sponsor | Jun 30, 2027 |
| Sandy Hook, CT | Bill Hegenauer, LLC | F0C140D0FB | Apprenticeship Sponsor | Jun 30, 2027 |
| Stamford, CT | Bill Magyari Plumbing & Heating | 1B76DDAFDB | Apprenticeship Sponsor | Jun 30, 2011 |
| Torrington, CT | Bill The Plumber | 3B507C7771 | Apprenticeship Sponsor | Jun 30, 2015 |
| Norwalk, CT | Bill Trudden Electric, LLC | F42BC419B0 | Apprenticeship Sponsor | Jun 30, 2012 |
| Taftville, CT | Bill's Cadet Barbershop | 3DD303DF2A | Apprenticeship Sponsor | Jun 30, 2023 |
| Oakdale, CT | Bill's Sheet Metal Shop | 871B38E5AA | Apprenticeship Sponsor | Jun 30, 2017 |
| South Windsor, CT | Billco Heating, A/C & Refrigeration LLC | 27A3250C7E | Apprenticeship Sponsor | Jun 30, 2020 |
| Southington, CT | Billy Carlson Heating & Air Conditioning, LLC | D78F06077B | Apprenticeship Sponsor | Jun 30, 2027 |
| Portland, CT | Billy Z's Electric | 9CA2FE0196 | Apprenticeship Sponsor | Jun 30, 2027 |
| Torrington, CT | Bilodeau Electric, LLC | 8DF5AEC207 | Apprenticeship Sponsor | Jun 30, 2017 |
| Meriden, CT | Bilodeau Plumbing & Heating | B57F06B87E | Apprenticeship Sponsor | Jun 30, 2007 |
| Bristol, CT | Binswanger Enterprises dba Binswanger Glass | 46CD9229F5 | Apprenticeship Sponsor | Jun 30, 2018 |
| Ellington, CT | Bird Electrical Services LLC | 92F5555A70 | Apprenticeship Sponsor | Jun 30, 2015 |
| Portland, CT | Birdon America Inc. | 6D99EED2DE | Apprenticeship Sponsor | Jun 30, 2027 |
| Southbury, CT | Birmingham Construction Co., LLC | C88F02FA56 | Apprenticeship Sponsor | Jun 30, 2020 |
| East Hartford, CT | Birthmark Fire Protection, LLC | BF16D40F41 | Apprenticeship Sponsor | Jun 30, 2027 |
| Middletown, CT | Bish Electric Inc. | B2B1D79DDA | Apprenticeship Sponsor | Jun 30, 2014 |
| Woodbury, CT | BK Plumbing, LLC | CA33F42811 | Apprenticeship Sponsor | Jun 30, 2022 |
| Winsted, CT | Black Bear Communications & Electric | CBC03F4134 | Apprenticeship Sponsor | Jun 30, 2022 |
| East Granby, CT | Black Bear Heating & Air, LLC | F9E8D78685 | Apprenticeship Sponsor | Jun 30, 2026 |
| South Windsor, CT | Black Box Network Services | 998046ACE4 | Apprenticeship Sponsor | Jun 30, 2004 |
| Woodbury, CT | Blais Electric, LLC | D4ECD5D00D | Apprenticeship Sponsor | Jun 30, 2027 |
| Manchester, CT | Blake Electrical Contractor | 973FADA240 | Apprenticeship Sponsor | Jun 30, 2006 |
| East Windsor, CT | Blake Thermal Sales & Service Inc. | E1BCADC231 | Apprenticeship Sponsor | Jun 30, 2027 |
| Branford, CT | Blakeslee Arpala Chapman, Inc. JATC 478 | EE62A9A925 | Apprenticeship Sponsor | Jun 30, 2023 |
| Glastonbury, CT | Blanchet Electric, LLC | E779308865 | Apprenticeship Sponsor | Jun 30, 2011 |
| Stratford, CT | Blase Manufacturing Company | 0FB4E43777 | Apprenticeship Sponsor | Jun 30, 2006 |
| Torrignton, CT | Blass Electric, LLC | 20AE502524 | Apprenticeship Sponsor | Jun 30, 2027 |
| Berlin, CT | Blenz Barber Shop LLC | BE558B3A6F | Apprenticeship Sponsor | Jun 30, 2026 |
| Derby, CT | Blizzard Mechanical, LLC | 785E374262 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Glastonbury, CT | Bloomfield Electric Company | 7732D4A7E4 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bloomfield, CT | Bloomfield Fuel Oil Company, Inc. | DF8A398ABF | Apprenticeship Sponsor | Jun 30, 2011 |
| Milford, CT | Bloszko Plumbing & Heating | 555C614E86 | Apprenticeship Sponsor | Jun 30, 2027 |
| Stamford, CT | BLT MANAGEMENT LLC | C0EFEEB8EB | Major Contractor + 1 more | Jun 30, 2027 |
| New Haven, CT | BLUE FLAME OIL CO | 3A4D933432 | Home Heating Fuel Dealer + 2 more | Sep 30, 2027 |
| New Milford, CT | Blue hills barbershop | 801B69CD7E | Apprenticeship Sponsor | Jun 30, 2027 |
| Bloomfield, CT | BLUE HILLS ELECTRIC LLC | ED0C9168DC | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| Goshen, CT | Blue Marlin Mechanical LLC | 386C7EEC27 | Apprenticeship Sponsor | Jun 30, 2026 |
| Rocky Hill, CT | Blue Ribbon Plumbing Inc. | 4EE7FC1E5D | Apprenticeship Sponsor | Jun 30, 2022 |
| Darien, CT | BLUE WAVE ELECTRIC, LLC | 67CF6759C6 | Apprenticeship Sponsor | Jun 30, 2023 |
| Monroe, CT | BML Tool & Manufacturing Corp. | 9C73BC2598 | Apprenticeship Sponsor | Jun 30, 2027 |
| Milford, CT | Bob Hofmiller Heating & Cooling Services, LLC | 8D0F4E9393 | Apprenticeship Sponsor | Jun 30, 2018 |
| Stamford, CT | Bob Wilmot Hydro Mechanical | 557FC6594A | Apprenticeship Sponsor | Jun 30, 2007 |
| North Branford, CT | Bob's #1, Inc. DBA - Mr. Rooter Plumbing - CT Sewer Service | 1DE5FD76FE | Apprenticeship Sponsor | Jun 30, 2015 |
| Fairfield, CT | Bob's Plumbing & Heating | EB067E699E | Apprenticeship Sponsor | Jun 30, 2015 |
| Danbury, CT | Bobby T's Plumbing & Heating, LLC | 0E41016B5A | Apprenticeship Sponsor | Jun 30, 2025 |
| Putnam, CT | Boho Beauty Bar LLC | E1C0B5DB8A | Apprenticeship Sponsor | Jun 30, 2027 |
| Bloomfield, CT | BOISVERT PLUMBING | 3AB918D854 | Apprenticeship Sponsor | Jun 30, 2027 |
| South Windsor, CT | Bolton Group Electrical Services, LLC | FFFBD6685D | Apprenticeship Sponsor | Jun 30, 2008 |
| North Branford, CT | Bonito Mechanical, LLC | 8B53A91B2B | Apprenticeship Sponsor | Jun 30, 2027 |
| Uncasville, CT | BONNER ELECTRIC INC | 1D06F85253 | Tv & Radio Dealer + 1 more | Aug 31, 2027 |
| New Milford, CT | Booth Electric, LLC | CDC37DFA8D | Apprenticeship Sponsor | Jun 30, 2025 |
| Newington, CT | BORSELLE PLUMBING & HEATING LLC | C12E868A0E | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| Naugatuck, CT | Bosco Glass & Mirror, LLC | 96F651C3E5 | Apprenticeship Sponsor | Jun 30, 2007 |
| New Milford, CT | Boss Hill Plumbing | 11CA1B2532 | Apprenticeship Sponsor | Jun 30, 2012 |
| Plantsville, CT | BOSSE HEATING & AIR CONDITIONING LLC | CDE7B4DAEB | Apprenticeship Sponsor | Jun 30, 2027 |
| Stoughton, MA | Boston Roofers JAC #33 | 14823978CF | Apprenticeship Sponsor | Jun 30, 2010 |
| New Fairfield, CT | Botticelli Electric LLC | BDC9FE47D7 | Apprenticeship Sponsor | Jun 30, 2014 |
| Danbury, CT | Botticelli Plumbing & Heating | 9E8D8A6A0C | Apprenticeship Sponsor | Jun 30, 2027 |
| Plantsville, CT | Bouchard Fuels, Inc. | AF69C9215B | Apprenticeship Sponsor | Jun 30, 2009 |
| Stamford, CT | Boucher Plumbing & Heating, LLC | F9E1A6AC18 | Apprenticeship Sponsor | Jun 30, 2015 |
| Easthampton, MA | Boulanger's Plumbing & Heating, Inc. | 0D22F02767 | Apprenticeship Sponsor | Jun 30, 2025 |
| Watertown, CT | Boulier Plumbing & Heating | 7790C92C21 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bristol, CT | Bowden Mechanical Services LLC | 99D889C490 | Apprenticeship Sponsor | Jun 30, 2014 |
| Manchester, CT | Boyington Plumbing solutions | B9970E32C9 | Apprenticeship Sponsor | Jun 30, 2027 |
| Sandy Hook, CT | BPC Electric LLC | E9A8E6FD1D | Apprenticeship Sponsor | Jun 30, 2012 |
| Amston, CT | Bradley Electric, LLC | CF9147C62C | Apprenticeship Sponsor | Jun 30, 2009 |
| New Hartford, CT | Brainard Electric, LLC | 210E4F4F23 | Apprenticeship Sponsor | Jun 30, 2017 |
| Andover, CT | Brainard Plumbing & Mechanical | 413448D280 | Apprenticeship Sponsor | Jun 30, 2023 |
| Shelton, CT | Brainards, Inc. | 3752599E01 | Apprenticeship Sponsor | Jun 30, 2014 |
| Westfield, MA | Branch Electrical Service Team, Inc. | 25586FFE9F | Apprenticeship Sponsor | Jun 30, 2027 |
| Norwalk, CT | Brandt Scipion Plumbing & Heating | E4FCD51275 | Apprenticeship Sponsor | Jun 30, 2022 |
| Bloomfield, CT | Brannack Electric, Inc. | CC06E8C422 | Apprenticeship Sponsor | Jun 30, 2025 |
| Brookfield, CT | Branson Ultrasonics Corp. | 25FC502AC4 | Apprenticeship Sponsor | Jun 30, 2020 |
| Port St Lucie, FL | Brasco Technologies, LLC | 65F7AFFB90 | Apprenticeship Sponsor | Jun 30, 2023 |
| Plantsville, CT | Brass City Alarm, LLC | D0533A9379 | Apprenticeship Sponsor | Jun 30, 2023 |
| Waterbury, CT | Brass City Electric | 8B6812A3DC | Apprenticeship Sponsor | Jun 30, 2012 |
| Waterbury, CT | BRASS CITY/J THURSTON FUEL LLC | 45F675E73B | Operator of Weighing & Measuring Devices + 2 more | Jul 31, 2027 |
| Enfield, CT | Brattan National, LLC | 5B5032C944 | Apprenticeship Sponsor | Jun 30, 2027 |
| Brookfield, CT | Braud Plumbing & Heating LLC | 48B1104184 | Apprenticeship Sponsor | Jun 30, 2009 |
| Waterbury, CT | Brauner Electric Co., LLC | F08E393AAD | Apprenticeship Sponsor | Jun 30, 2010 |
| New London, CT | Bravado Barbershop | AED4191713 | Apprenticeship Sponsor | Jun 30, 2024 |
| Trumbull, CT | Bravo Electrical Contractor, LLC | 1431F111BD | Apprenticeship Sponsor | Jun 30, 2022 |
| Watertown, CT | BRAXTON MANUFACTURING CO., INC. | 899488B7EE | Apprenticeship Sponsor | Jun 30, 2027 |
| Brookfield, CT | Bray's Electric & Construction Inc. | BD19A8D8CF | Apprenticeship Sponsor | Jun 30, 2027 |
| Norwich, CT | Brayman Heating & Cooling, Inc. | 8CAC22B24E | Apprenticeship Sponsor | Jun 30, 2012 |
| Stratford, CT | Breakwater Electric, LLC | C170E32C13 | Apprenticeship Sponsor | Jun 30, 2025 |
| Stratford, CT | Bren-Air Heating & Cooling | 7967D1AD05 | Apprenticeship Sponsor | Jun 30, 2012 |
| Shelton, CT | Brendan's Heating And Cooling LLC | FB9F96317E | Apprenticeship Sponsor | Jun 30, 2027 |
| Willimantic, CT | Brennan Electric | 1E05987612 | Apprenticeship Sponsor | Jun 30, 2025 |
| Somers, CT | Brewer Electric & Sons, Inc. | 2F86E99E75 | Apprenticeship Sponsor | Jun 30, 2023 |
| Bridgeport, CT | Bria Plumbing & Heating, LLC | 1D645F7A4D | Apprenticeship Sponsor | Jun 30, 2021 |
| Stamford, CT | Brian Capone Land Svcs, Inc. | 41910B6CF9 | Apprenticeship Sponsor | Jun 30, 2024 |
| Fairfield, CT | Brian Howard & Sons Electric, LLC | 42C242DA87 | Apprenticeship Sponsor | Jun 30, 2020 |
| Stamford, CT | Brian Karwosky's Heating & Air Conditioning, | 935B976F30 | Apprenticeship Sponsor | Jun 30, 2027 |
| Roxbury, CT | Brian Piersall Plumbing & Heating Services | 0B06FB1806 | Apprenticeship Sponsor | Jun 30, 2010 |
| Coventry, CT | Brian's Electric LLC | 6BB2674BE8 | Apprenticeship Sponsor | Jun 30, 2016 |
| Torrington, CT | Brian's Glass, LLC | 2BA29DED1E | Apprenticeship Sponsor | Jun 30, 2009 |
| Seymour, CT | Brian's Heating & Cooling, LLC | 0B4E63CEF0 | Apprenticeship Sponsor | Jun 30, 2027 |
| Wallingford, CT | Bricklayers & Allied Craftworkers LU1 CT JATC | 81086B8057 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bridgeport, CT | Bridgeport Board of Education | AFB6638EBF | Apprenticeship Sponsor | Jun 30, 2026 |
| Stratford, CT | BRIDGEPORT FITTINGS, INC. | 97DD3764DE | Apprenticeship Sponsor | Jun 30, 2026 |
| Bridgeport, CT | BRIDGEPORT HOSPITAL | AD265E23BA | General Hospital + 3 more | Mar 31, 2028 |
| Bridgeport, CT | Bridgeport Tool & Stamping Corp. | 87E06AF015 | Apprenticeship Sponsor | Jun 30, 2015 |
| Plainville, CT | Bridgeworks Heating & Cooling, LLC | 88362DFA4D | Apprenticeship Sponsor | Jun 30, 2027 |
| Stamford, CT | Bright Electric, LLC | 2F9EED13E1 | Apprenticeship Sponsor | Jun 30, 2027 |
| North Haven, CT | Bright Planet Solar Inc. | 27F58D1E87 | Apprenticeship Sponsor | Jun 30, 2017 |
| West Hartford, CT | Bright Sparks, LLC | B84706DC2E | Apprenticeship Sponsor | Jun 30, 2012 |
| Southington, CT | BrightHouse Electric LLC | 78846A28CC | Apprenticeship Sponsor | Jun 30, 2026 |
| Newington, CT | Brightview Landscape Services | CFFC66C43E | Apprenticeship Sponsor | Jun 30, 2019 |
| Bristol, CT | Bristol Electrical Works | 86C8FFE6DF | Apprenticeship Sponsor | Jun 30, 2011 |
| Branford, CT | Brite-Rite Electrical Services, LLC | 83AA7A90B2 | Apprenticeship Sponsor | Jun 30, 2027 |
| Colchester, CT | Brite-Way Electric LLC | 20CFD3FC54 | Apprenticeship Sponsor | Jun 30, 2027 |
| Southport, CT | Britt Air Services, LLC | FFA97FD5C6 | Apprenticeship Sponsor | Jun 30, 2024 |
| Westport, CT | Britt-Air LLC | 05DDB11CF8 | Apprenticeship Sponsor | Jun 30, 2022 |
| Gales Ferry, CT | Bro's Barbershop, LLC | BE5D721D28 | Apprenticeship Sponsor | Jun 30, 2024 |
| Jewett City, CT | Broad Brook Heating & Cooling, Inc. | E8B2283952 | Apprenticeship Sponsor | Jun 30, 2027 |
| Windsor, CT | Broad Street Barbershop | EA88B69EB0 | Apprenticeship Sponsor | — |
| Old Greenwich, CT | Broadbent Electric Refrigeration & A/C, Inc. | CE8D0BD64B | Apprenticeship Sponsor | Jun 30, 2010 |
| Southbury, CT | Broadway Electric, Inc. | A39D963DFC | Apprenticeship Sponsor | Jun 30, 2027 |
| Stratford, CT | Broda Electric, LLC | DE6E881392 | Apprenticeship Sponsor | Jun 30, 2026 |
| Burlington, CT | Brook View Developers, LLC | DA8496DBFD | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Brookfield, CT | BROOKFIELD GLASS WORKS INC | E80CEB3D08 | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| Brookfield, CT | Brookfield Plumbing & Heating, LLC | E1EA270C81 | Apprenticeship Sponsor | Jun 30, 2027 |
| West Suffield, CT | Brookman Plumbing, LLC | 8F7447C303 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bristol, CT | Brooks Oil Service, Inc. | D0EC9D768E | Apprenticeship Sponsor | Jun 30, 2026 |
| Darien, CT | BROOKSIDE ELECTRIC | 7980DF616F | Apprenticeship Sponsor | Jun 30, 2027 |
| Wallingford, CT | Brothers Heating and Cooling LLC | 7DD0B7BEC9 | Apprenticeship Sponsor | Jun 30, 2027 |
| East Hartford, CT | Brothers Oil Company & Heating Service | 9A7804F7B6 | Apprenticeship Sponsor | Jun 30, 2027 |
| Gales Ferry, CT | Brown & Son Plumbing & Heating, LLC | 4A255585FE | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Beacon Falls, CT | Bruce Angeloszek & Associates | EBE7C45FC3 | Apprenticeship Sponsor | Jun 30, 2007 |
| Sharon, CT | Bruce Haan Plumbing & Heating LLC | E1E1112255 | Apprenticeship Sponsor | Jun 30, 2009 |
| Bozrah, CT | BRUNELLI ENERGY LLC | 6D08DCFF77 | Motor Fuel Quality Registration + 4 more | Oct 31, 2027 |
| Stratford, CT | Brunson Electric, LLC | 5962707271 | Apprenticeship Sponsor | Jun 30, 2022 |
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.