next–door

next–door /ˈnɛkstˈdoɚ/ adjective
next–door
/ˈnɛkstˈdoɚ/
adjective
Britannica Dictionary definition of NEXT–DOOR
always used before a noun
1 
: living in the next house, apartment, room, etc.
2 
: next to your or someone else's house, apartment, room, etc.