Subfloor Problems

I am planning on putting Bellawood 1/2" prefinished hardwood in our kitchen, living room and hall. I pulled up the carpet and linoleum to find differing amounts of plywood in each room. The living room has only 3/4" plywood, the hall has 3/4'' + 1/2" plywood, the kitchen has the 3/4" + the 1/2" + 1/4" underlayment. This is the basic design of the rooms.

| |
| H |
___________________ | |
| | _____________
|
|
| XXXXXXXXXXXXXXXXXXXX LR
| |
| KIT |
| | XXXXXXXXXXXXX

From the X's in the kitchen to the hall, the floor slopes down about an inch. And, at about the X's in the LR, there's a peak of about 3/4". I would like to know what options I have for a decent flooring job. I have no access to the joists from underneath because the full basement was finished with drywall on the ceiling.

Also, is it reasonable to put the flooring into the bathroom?

Thanks a bunch,
Amaznjohn

 

Sorry, the drawing didn't show as planned and I can't get a drawing file to attach. I guess I'm not allowed. Anyway, the kitchen slope is approx. 4 feet to the hall. The living room crest is in the middle of the room.

Thank you for any help.

 

" I would like to know what options I have for a decent flooring job."

I would suggest making a flat subfloor. It sounds like you have to add different thicknesses of plywood to get it ready for hardwood?

Bathrooms? Ones withour showers or baths, yes.