Dormer style with outside wall the same plane with the house outside wall (pic)

[JoAnn]

This is how I did it.

Oops. Correction. I found out that if a foundation or terrain perimeter is added, it raises the roof over the bay.
Sooooo....I lowered the finished ceiling in the little bay room, and REMOVED the "extend slope downward" in the front bay wall dialog box. Remember, you can raise all the lowered ceilings AFTER you have turned off the "auto rebuild roof" feature. Make sure the entire roof structure is what you want before that feature is turned off!