Due diligence questions to ask before hiring an LL152 inspector:
Is the inspector a Licensed Master Plumber (LMP) or a qualified employee of one? If the inspector is not an LMP, then they must meet DOB requirements for experience, training and Worker Wallet credentialing and be prepared to produce those credentials on request. View the Plumbing Foundation’s qualification flowchart
Is the LMP actively licensed with the NYC Department of Buildings? You can verify by searching by name, business name or license number. Check license status here
Will the inspector help you resolve any needed repairs and file the final GPS-2 form to certify the repairs have been completed? If your inspector won’t handle repairs then you are are your own to hire another LMP to make the repairs and certify the corrections for the final GPS2 form.
Did the inspector explain the new requirement to notify the DOB of a scheduled inspection and that the DOB may accompany the inspector during your inspection? As of 01/03/2026, new DOB rules require inspectors to submit a form at least 2 days before the inspection, giving DOB the option to attend the inspection. This requirement officially rolled out on 02/10/2026. If an inspector fails to do this then the inspection can be deemed invalid.
Although not required for an LMP, did the LMP complete the DOB-approved 7-hour gas safety/LL152 course? This shows additional commitment to compliance and best practices.
Was the scope of the inspection clearly explained ahead of time? A qualified inspector should review the full process and the 3 possible outcomes before starting.
Does the inspector carry both General Liability (GL) and Professional Liability (E&O) insurance? GL insurance alone does not cover inspections. E&O is critical.
Will the inspector provide proof of insurance and a certificate for both GL and E&O coverage? Always ask for documentation before the inspection begins.
Has the inspector confirmed your building’s inspection due date and advised on extensions if needed? Verifying your Cycle 2 year and whether you would like a deadline extension is part of responsible service.
Will the inspector file the GPS-2 form for you through the official DOB portal? They should also confirm filing by providing the DOB’s confirmation receipt.
Will the inspector give you both a paper and digital copy of your GPS-1 and GPS-2 forms? These records are essential and must be retained for 10 years per the DOB.
