Selling a 2 Family in Brooklyn as a 1 family

[Victor O.]

Hi Guys!

So I bought off a legal 2 family house in Brooklyn which had an apartment upstairs but was taken out and everything was converted by the previous owner into one nice big house without any official permit to convert it.. I would rather marker it and sell it now as a 1 family house and sell it as is. Question is if a buyers bank will have a issue with this as the legal certificate of occupancy is listed as a 2 family with the city. 

Any input will be appreciated.

Thank you!