To complete the project you will need . . . 
1 patio floor section (30 64 1090)
1 center base unit  (30 24 9650)
2 triple female wall connectors (30 24 9700)
7 black railings (30 05 7280)
4 straight black railing connectors (30 05 7300)
2 black corner railing connectors (30 05 7310)
1 3 unit wall with door and windows (optional)
Hope you have as much fun as I did.  
 
Joe
I don't own either of these yet, but have my sights on some that are still on the local shelf, so I don't know off hand what parts they already come with.  Just tryina figure out what EXTRA parts I will need to find to make it work:
I know for sure I will need to locate an extra wall with a door if I want the roof patio to have a door, but....
Does not the Pavillion itself already come with:
1 patio floor section, and
6 black railings (meaning I'd have to locate an only 1 extra railing )?
And will the base unit that comes with the Pavillion work with this setup?  Or do I have to find an extra mansion base unit to expand it seperately?  (since I'm guessing the Pavillion base is too big on it's own, since it seems to cover the length of the pavillion AND the patio together?)
And as far as the female connectors and the black railing connectors, do they already come in sufficient amounts between the Pavillion and Mansion sets?  Or would I have to locate extra connectors in addition to both sets?
Thanks in advance again for your help!
And awesome ideas and work again, both you and inspirational Gaston.