| Architects | Info / Apply | Search | File Complaint | Division of Professional Licensure |
| Asbestos Removal Professionals | Info / Apply | Toll-free in MA: 1-800-425-0004 or 617-425-0004 | Division of Occupational Safety |
| Contractors, Home Improvement | Info / Apply | Search |
File Complaint 
| Office of Consumer Affairs and Business Regulation |
Electricians and Alarm System Installers | Info / Apply | Search | File Complaint | Division of Professional Licensure |
| Electricity Broker License | Info / Apply | Search | File Complaint | Dept. of Public Utilities |
Engineers and Land Surveyors | Info / Apply | Search | File Complaint | Division of Professional Licensure |
| Gas Utilities | Info: 617-305-3545 | Search | 800-392-6066 | Dept. of Public Utilities |
Home Inspectors | Info / Apply | Search | File Complaint | Division of Professional Licensure |
| HVAC Technicians | Info / Apply | Search | 617-727-3200 | Dept of Public Safety |
| Insurance Producer / Agent / Broker | Info / Apply | 617-521-7794 | File Complaint | Insurance |
| Landscape Architects | Info / Apply | Search | File Complaint | Division of Professional Licensure |
| Lawyers | Info / Apply | Search | File Complaint | Board of Bar Overseers |
| Lead Paint Inspectors | Info / Apply | 617-753-8400 | Dept of Public Health |
| Manufactured Building Producers | Info: 617-727-7532 | Search | 617-727-7532 | Board of Building Regs and Stds. |
| Mobile Home Parks | Mandated by state law but issued by local governments |
| Mortgage Companies | Info / Apply | 617-956-1500 x 540 | File Complaint | Division of Banks |
| Municipal Building Inspectors | Info | Search | File Complaint | Board of Building Regs and Stds. |
| Real Estate Appraisers | Info / Apply | Search | File Complaint | Division of Professional Licensure |
| Real Estate Brokers and Salespersons | Info / Apply | Search | File Complaint | Division of Professional Licensure |
| Security System Contractors | 617-727-3200 | Dept of Public Safety |
| Title 5 Inspectors | Info | Search | 617-338-2255 | Dept. of Environmental Protection |
| Underground Storage Tanks | 617-727-3200 | Dept of Public Safety |
| Well Drillers | Info / Apply | Search | 617-727-3180 | Dept. of Environmental Mgt |
