An bunker with bricks/dry wall covering to look like a regular house and a second story extension unless theres such a thing as a two storey above ground bunker.
Aircon for my giant computers
Bedrooms become panic rooms
Hallways can be flooded with knock out gas through the airvents
Secret doors in the back of wardrobes to access other bedrooms in case we have to lock ourselves in
Cameras to other rooms
Hidden weapons in every room
Plain grassy front lawn with brick patio
Plain grassy backyard with a brick patio and a shed
Other stuff I cant remember right now
A bathroom two stories high with the shower head on the second storey and me on the ground floor
Basement that works as a falloutshelter.
Library
Maybe a pool.
Driveway two cars wide.
Other stuff I cant remember right now.