Using a B2 - 2 Family as a single family or converting with DOB

I think the general understanding is that the DOF classification is not recognized by DOB. It does suggest that there may be documents out there that support that classification. If the LNO is denied for use as one-family, perhaps it would be approved for use as two family. As for getting a new CofO, I’ll skip the long version where it depends on various things, and just tell you it will be a nightmare, the memory of which will haunt you until the end of your days.