Landmarks building questions

I live in a condo in Manhattan that I just found out was recently landmarked, so I have two questions:

1. We want to replace our windows. The ones in our building are NOT the original. (V. ugly). (And yes, the building will allow us to replace our own windows). So does the landmarks commission look back at old pictures and make you replace with something similar to what used to be there? Or do we have more lee-way than that?

2. I also want to install a through-the-wall airconditioner. It’s on the side of the building, not facing the street, but you can still see it from the street (we’re on the 5th floor and the building next door is only 1 story high). Is this a big no no?

Thanks for your help!

By Frudo |