Even pad (4)
I believe the answer is:
flat
I believe this is a double definition.
'even' is the first definition.
(similar in meaning)
'pad' is the second definition.
(type of home or 'pad')
(Other definitions for flat that I've seen before include "not deep?" , "Apartment - below the note" , "Dull; set of rooms" , "Level; pad" , "with no relief" .)