You folks are top notch SeinTriv buffs with most of the answers...& then some, let me try this on you.
I think this is a solid, quality Q, but hard.

Any fan can tell you Jer lives in Apt. 5A.....no sweat.

Decent SeinGeeks could of course rattle off 129 West 81st Street as the address.....cool.
but...
What is the name of Jerry's (& Kramer & Newmy's) building???
It's called 'The _______'

Man, nothing even from briandamage, Bulletrain or JanLady617???
:D :cool:

I've looked high and low on the internet and came up empty handed. It's not The Landmark, is it?
:confused:

JanLady617, it's not The Landmark.
Thanx for giving it a whirl & checking.

I'll give it a little more before I post it to see if the other cats will try an answer.

Drumroll please......The Shelley!

Gotta love that www.ask.com
:dance:

There's some interesting apartment information here.
http://www.ask.com/main/metaAnswer.asp?t=ai&s=a&MetaEngine=directhit&en=te&eo=5&o=0&frames=True&url=http%3A%2F%2Fwww%2Ecsn%2Eul%2Eie%2F%7Ehala%2Fold%2Fseinfeld%2Ehtm&ac=20&adcat=ent&pt=Seinfeld+%28an+Episode+Guide%29&dm=http%3A%2F%2Fwww%2Ecsn%2Eul%2Eie%2F%7Ehala%2Fold%2Fseinfeld%2Ehtm&io=2&qid=E702BE5948EA1E48AB856EF11A6D5F7B&back=ask%3Dname%2Bof%2Bapartment%2Bjerry%2Bseinfeld%2Blived%2Bin%2Bon%2Bsitcom%2BSeinfeld%253F%26o%3D0%26x%3D6%26y%3D7&ask=name+of+apartment+jerry+seinfeld+lived+in+on+sitcom+Seinfeld%3F&dt=021127085312&amt=&pg=1&qsrc=0

I gotta say Maestro, you had me stumped on that one. I would've never guessed The Shelley.

The Shelly is correct.

Nice work JanLady617, you weren't lettin' that one go.
I think it was a good Q, hard, but not lame. Nice job.
I'll have to check your links, thanx.

braindamage, thanx for checkin' in on this one :)