Tsk, my parents house has stone walls that are over 24" thick in parts (stays really cool in the summer!), and not exactly totally straight. Ditto for the ceilings. I think they call it "character".

...then again, it was built in 1649 ;)

Roger's place looks to me like it was built somewhere between the 1950s and early 1980s. Brick & plaster.

Hugo