Here's my take that's evolved over the years, trying reconcile interior to exterior. It's not easy, or perfect. (this thing is shrinking my pic).
I think of general shots with the layout, and ignore others that just don't make sense. Different directors show different and inconsistent comin's & goin's. To come up with an overall layout that possibly makes sense, some shots used not very often have to be ignored. Others are just physically impossible. So to me, it's striking a general, common sense balance between exterior and interior. It's not perfect, but it makes some sense.
Kitchen...
* I've seen the dining room door behind JR go out and to the right in a couple of shots. That does not jibe with the SF exterior, so I ignore that.
* To me the door behind JR goes directly from the dining room to the kitchen.
* There would
have to be a second entrance to the kitchen (unseen) from around behind the steps. Haven't seen that, tho' something like it was shown when Gary and Bobby were drinking milk one night. Wasn't used after that, that I recall. Kitchen scene shots are more interesting when entering from the door on the far side of the kitchen. Call it artistic license for all characters to enter the kitchen that way, and exit through the dining room for some final dialog or facial expressions.
* I think I've seen that side window mentioned above from the dinette looking out. I ignore that also, as it doesn't work logically.
* The bay window behind Ellie's place at the table exists at 4800 Park Lane, but does not exist at SF. SF has two side windows. Is one a kitchen window? Maybe.
Living room
* I remember a scene or two with a corner door behind the bar going out into what would be the garage area. Did it go away? Will observe next time I watch some early Dallas.
Living room / den
* For me, the far door on the back living room wall was used many times to enter the den. Based on assumed layouts of the den behind the living room, this would have to be.
1. JULIE'S RETURN. Jock, when he asks the women about "another charity do", comes in that way.
2. The Asian coup. JR wanders in through that door, turns on the TV, then steps out onto the breakfast patio through the sliding door.
3. But, numerous times characters were seen coming in through that same den entrance from a prior shot of the characters walking through the foyer door behind the stairs. Director's prerogative I guess. But it doesn't work physically, so I ignore that.
Den...
* Patio scenes show "den" windows. Have to ignore those, as they don't exist in interior den scenes that I'm aware of.
??...
room or rooms & closets
* mud room
* I'm sure there was a john or two on the ground floor somewhere
* pantry
* Teresa and others hang room
* pool table
* other room or later partially converted to a gym
* in other words, unaccounted for on the show.
I've been to SF. Quite a home. Let me know if you have other thoughts and ideas. I'd like to get this as close as possible, with as much input as possible.