I bought all of the house addons (except for the alchemy room) all at once. Now when I go back I no longer get the option to buy house add ons... I have to search around the castle for the guy that sold me the house & when I find him there's no option to buy the alchemy add on. Anyone else experience this?

I have not had this problem, but I just brought two at a time, why don't you do the same? Reload it from a past saved game, then buy two, then check it out, then go back then buy the other 2, then so on, if this works, then there you go But sorry about not able to get the table D:

I did the exact same thing and the exact same thing happened to me. You just have to wait until he's up and about with the jarl or in the room with the maps and asks if he can help you with anything, then the option to decorate your house should show up. Worked for me.