This mansion is a private home of Tony Stark aka Iron Man, wired through J.A.R.V.I.S who runs the whole place.
It's located in Malibu, California.
History
Infiltration
After Stark disassembled the Avengers, he went to his mansion attempting to create a device which may expose the Skrulls from their disguises but fails everytime. That was until Doctor Doom arrived and gave Stark the chip needed for the device to work after having a short fight.
Tony later left the mansion after Black Widow requested him to see Nick Fury.
Appearances
Background in other media
The appearance of the mansion is based on Tony Stark's mansion in the Marvel Cinematic Universe.