In fact, the address has been changed to 10066 to deter the less determined lookie-loos, of whom there are apparently still many.
Here is a drain that was installed on the approximate spot where Gibby's body was discovered on the front lawn:
The following photos were taken from where the guest house would have stood, looking eastwards toward the main house. The swimming pool that was in between the two was replaced by an "Italian Grotto."
More of the construction in 1994:
If you care to see some quick shots of the exterior and more extended footage shot inside the living room of Cielo in the early nineties, check out Nine Inch Nails' video with Marilyn Manson for "Gave Up" here: http://www.youtube.com/watch?v=yVpw1SwJRBI