| Addario, Inc. | Active | Active | |
| Elman Plumbing Co., Inc. | Active | Active | |
| Atco Plumbing & Mechanical LLC | Active | Active | |
| Atco Plumbing & Mechanical LLC | Active | Active | |
| Patriot Plumbing LLC | Active | Active | |
| Patriot Plumbing & Heating, Inc. | Active | Active | |
| Flynn & Cataldo, Inc. | Active | Active | |
| 128 Plumbing & Heating Inc. | Active | Active | |
| Kirkland And Shaw Inc. | Active | Active | |
| Addario, Inc. | Active | Active | |
| Heritage PHCE Corp. | Active | Active | |
| Robert W. Irvine & Sons Inc. | Active | Active | |
| Plumbers Inc. | Active | Active | |
| DaVinci P.H.D. Inc. John Lodato | Active | Active | |
| Best Yet Installations, Inc. Vincent Marino | Active | Active | |
| Best Yet Installations, Inc. Vincent Marino | Active | Active | |
| Best Yet Installations, Inc. Vincent Marino | Active | Active | |
| Best Yet Installations, Inc. Vincent Marino | Active | Active | |
| Best Yet Installations, Inc. Vincent Marino | Active | Active | |
| Best Yet Installations, Inc. Vincent Marino | Active | Active | |
| Commonwealth Plumbing Corp. | Active | Active | |
| Patrick J Kennedy & Sons, Inc | Active | Active | |
| MCCARTHY PLUMBING INC - KEVIN J MCCARTHY | Active | Active | |
| New house plumbing LLC | Complete | Complete | Cambridge |
| Addario Inc Addario | Complete | Complete | Cambridge |
| Sakel & Son Plumbing, LLC | Complete | Complete | Cambridge |
| Plumbing Corporation or Professional Corporation (PC) | Complete | Complete | Cambridge |
| Bluewave Plumbing and Heating LLC | Complete | Complete | Cambridge |
| POLIZZOTTI PLUMBING AND HEATING LLC | Complete | Complete | Cambridge |
| DaVinci P.H.D. Inc. John Lodato | Complete | Complete | Cambridge |
| JULIEN MONTY PLUMBING & HEATING INC. - julien monty | Complete | Complete | Cambridge |
| DaVinci P.H.D. Inc. John Lodato | Complete | Complete | Cambridge |
| COX ENGINEERING COMPANY - John Hannigan | Complete | Complete | Cambridge |
| GMP PIPING INC | Complete | Complete | |
| BAY STATE PLUMBING AND GAS INC - Marcos Ferreira | Complete | Complete | Cambridge |
| BAY STATE PLUMBING AND GAS INC - Marcos Ferreira | Complete | Complete | Cambridge |
| WG Daley Plumbing and Heating Co., Inc WG Daley Plumbing Co Inc | Complete | Complete | Cambridge |
| RW PLUMBING INC | Complete | Complete | Cambridge |
| BAY STATE PLUMBING AND GAS INC - Marcos Ferreira | Complete | Complete | Cambridge |
| BAY STATE PLUMBING AND GAS INC - Marcos Ferreira | Complete | Complete | Cambridge |
| E.M. DUGGAN, INC. | Complete | Complete | |
| BAY STATE PLUMBING AND GAS INC - Marcos Ferreira | Complete | Complete | |
| PTL PLUMBING AND HEATING LLC | Complete | Complete | |
| PIPING SYSTEMS INSTALLATIONS, LLC | Complete | Complete | Cambridge |
| WG Daley Plumbing and Heating Co., Inc Plumbing | Complete | Complete | Cambridge |
| Corp #3683 | Complete | Complete | Cambridge |
| PTL PLUMBING AND HEATING LLC | Complete | Complete | Cambridge |
| MCCARTHY PLUMBING INC - KEVIN J MCCARTHY | Complete | Complete | Cambridge |
| DICO PLUMBING AND HEATING LLC | Complete | Complete | Cambridge |
| FORT HILL PLUMBING & HEATING, LLC | Complete | Complete | |
| corp 3583 | Complete | Complete | |
| corp 3583 | Complete | Complete | |
| FALITE BROS., INC | Complete | Complete | |
| RW PLUMBING INC | Complete | Complete | |
| BUILDING INSPECTION DISTRICT: NORTH CAMBRIDGE 2, DROPDOWNHOUSING INSPECTION DISTRICT: WEST CAMBRIDGE, FIRE COMPANY INSPECTION DISTRICT: E-9 | Complete | Complete | |
| CORP 3972 | Complete | Complete | |
| Corp#4572 | Complete | Complete | |
| Corp# 4572 | Complete | Complete | |
| Corp# 4572 | Complete | Complete | |
| Corp # 4572 | Complete | Complete | |
| Corp 3683 | Complete | Complete | |
| Corp#1494 | Complete | Complete | |
| Corp #3683 | Complete | Complete | |
| PJ Dionne Co | Complete | Complete | |
| DaVinci P.H.D. Inc. John Lodato | Complete | Complete | |
| Corp 1494 | Complete | Complete | |
| Corp 3583 (would not allow to enter in corp box) | Complete | Complete | |
| Corp. 2100 | Complete | Complete | |
| corp 3583 | Complete | Complete | |
| Corp #3683 | Complete | Complete | |
| EFR MECHANICAL LLC | Complete | Complete | |
| COOLING UNLIMITED INC. | Complete | Complete | |
| T & J HEATING AND AIR CONDITIONING INC. | Complete | Complete | |
| E.H.Marchant Co., Inc | Complete | Complete | |
| CRANNEY HOLDINGS LLC | Complete | Complete | |
| CORP#3683 | Complete | Complete | |
| A.H. Burns Co Inc | Complete | Complete | |
| DaVinci P.H.D. Inc. John Lodato | Complete | Complete | Cambridge |
| CORP # 1494 | Complete | Complete | |
| WE Webster corp | Complete | Complete | Cambridge |
| E. Puopolo & Son, Inc. | Complete | Complete | |
| Corp #3683 | Complete | Complete | |
| Best Yet Installations Inc. | Complete | Complete | |
| CORP #1494 | Complete | Complete | |
| Akain Plumbing, LLC | Complete | Complete | |
| Superior Plumbing, Inc | Complete | Complete | |
| Free-man Plumbing Heating and more LLC | Complete | Complete | |
| Compass Plumbing & Heating, Inc. | Complete | Complete | |
| Akian Plumbing, LLC | Complete | Complete | |
| Keith Plumbing & Heating LLC | Complete | Complete | |
| Dawson Plumbing & Heating, LLC | Complete | Complete | |
| Powderhouse Plumbing Inc. | Complete | Complete | |
| AllClear Plumbing Co Inc. | Complete | Complete | |
| Enoch C Shaw Co. | Complete | Complete | |
| Darb Mechanical Plumbing & Heating Inc. | Complete | Complete | |
| Darb Mechanical Plumbing & Heating Inc. | Complete | Complete | |
| Darb Mechanical Plumbing & Heating Inc. | Complete | Complete | |
| Best Yet Installations Inc. | Complete | Complete | |
| North Shore Mechanical Contractors LLC | Complete | Complete | |
| Medford Wellington Service, Inc. | Complete | Complete | |
| Polinski Mechanical, Inc. | Complete | Complete | |
| Black Dog Plumbing Inc. | Complete | Complete | |
| Crombie Plumbing & Heating, Inc. | Complete | Complete | |
| PJ Dionne Company Inc | Complete | Complete | |
| Free-man Plumbing Heating and more LLC | Complete | Complete | |
| PJ Dionne Company Inc | Complete | Complete | |
| Big Blue Plumbing & Heating, Inc. | Complete | Complete | |
| Crombie Plumbing & Heating, Inc. | Complete | Complete | |
| J Cook Plumbing & Heating LLC | Complete | Complete | |
| CSC Plumbing & Heating LLC | Complete | Complete | |
| Alewife Company Inc. | Complete | Complete | |
| CMP Plumbing LLC | Complete | Complete | |
| P.H. Mechanical Corp. | Complete | Complete | |
| Alewife Company, Inc. | Complete | Complete | |
| PJ Dionne Company Inc | Complete | Complete | |
| Presidential Heating & Plumbing Inc. | Complete | Complete | |
| Central Cooling & Heating Inc. | Complete | Complete | |
| Central Cooling & Heating Inc. | Complete | Complete | |
| CSC Plumbing & Heating, Inc. | Complete | Complete | |
| A Fagundes Plumbing & Heating Inc. | Complete | Complete | |
| Central Cooling & Heating Inc. | Complete | Complete | |
| Rooster Plumbing & Heating Corp. | Complete | Complete | |
| Free-man Plumbing Heating and more LLC | Complete | Complete | |
| Combustion Service Co. | Complete | Complete | |
| YG Services Inc. | Complete | Complete | |
| Epic Plumbing & Heating Inc. | Complete | Complete | |
| Dought & Sons, Inc. | Complete | Complete | |
| Alewife Company Inc. | Complete | Complete | |
| SG Harold Plumbing & Heating & AC LLC | Complete | Complete | |
| P.J. Dionne Company, Inc. | Complete | Complete | |
| Akian Plumbing LLC | Complete | Complete | |
| Tziavas & Sons Inc. | Complete | Complete | |
| Alewife Company Inc. | Complete | Complete | |
| Free-Man Plumbing Heatmore LLC | Complete | Complete | |
| North Shore Mechanical Contractors Inc. | Complete | Complete | |
| CSC Plumbing & Heating, Inc. | Complete | Complete | |
| Catfish Inc. | Complete | Complete | |
| Rooster Plumbing & Heating Corp. | Complete | Complete | |
| Caruso Plumbing & Heating Inc. | Complete | Complete | |
| Commonwealth Plumbing Inc. | Complete | Complete | |
| J.C. Higgins Corp. | Complete | Complete | |
| Wellington Plumbing & Heating Inc. | Complete | Complete | |
| Atlantic Heating & Air Conditioning Co., Inc. | Complete | Complete | |
| Central Cooling & Heating, inc. | Complete | Complete | |
| A. Spolidoro & Sons, Inc. | Complete | Complete | |
| Vargas Plumbing & Heating Corp. | Complete | Complete | |
| Apollo Plumbing & Heating Inc. | Complete | Complete | |
| Best Yet Installations, Inc. Vincent Marino | Complete | Complete | |
| Drew's Plumbing & Heating Inc. | Complete | Complete | |
| BLUE HILL PLUMBING & HEATING INC. | Complete | Complete | |