a stoop -- a set of stairs, with a small landing in front of the door, with or with out a small covering- is a very NY thing.. everyone calls the front steps a stoop..and signs on building (from my childhood) said no loitering on the stoop
another dutch style that is still common in NY is a 'airlock' entry.
you enter the house, (brownstone/or apartmentment building) and then in that entry way, are the door bells and mail boxes.. you wait in that room, to be buzzed in (or take out your key and let your self in, if you live there).. the outer door is closed, before the innner door gets opened, and drafts do not enter the house.. i am so used to them, i think them normal, and i am always surprised not to find one..
my new apartment building is designed that way- front door always unlocked, lead you to entry way that has another set of doors. now days, there security guard sits there, and every one gets announced, before being buzzed into the second set of locked doors.
other dutch words and influences abound in NY- like Kill (a marsh) or Meer (a small lake-there is one in central park) or Flushing (a town on netherlands) NYC, and the hudson valley up to albany is littered with dutch place names, and dutch terms dating back to the dutch influence in NY-- for instance, we don't have a common or a remains of a common in the old down town area-- we have 'bowling green'-- since that is what the dutch had...
Old mansions in NY do have semi circlular drives, and portico's, (VanDerBuilt mansion, in vanderbuilt park, for example)
Even Washington Irving -in his house in Sunnyside, (now the town of Irvington, NY, about 40 mile north of Manhattan, right on the banks of the hudson.) had one an entry way like that.. but it wasn't the offical front door.. the front door was more elegant, and is covered with wisteria.
stoop
