I have to say I find the continued discussion here flattering,
I would think that the Bundy property would promptly be abandoned after his wife and daughter leave. I personally think, that after the grounds are searched extremely thoroughly that the bank and city would have it promptly demolished. To save property values, they wouldn't have a memorial or anything like that built there, but I could see a neighborhood park being built in its place after it sat as an empty lot for a few years.
What likely happened that once the Newark Police Department got their hands on the photos of Bundy's victims they immediately (As well as the New Jersey State Police assisting them and maybe the F.B.I. is involved as well) started a extreme and fully thorough search of the grounds (Bundy's wife and daughter likely move out before the thorough search of the grounds is completed). For the house to be promptly demolished both the Bank and the City of Newark would need to after the search of the property is fully completed to prevent anyone from trying to steal pieces of the house as potential souvenirs or items that can be resold in the future.
Option 1. - Have a Demolition contractor demolish the house and have another contractor hired to haul the remains of the house (Except the materials that can be recycled) to a suitable location for proper disposal which would either be sending to a Landfill or digging a hole somewhere and burning up and burying the remains of the house (Fully encasing it in Concrete)
Option 2. - Have the Newark Fire Department set the house on fire for Training purposes and having the remains of the house properly disposed of.
After the demolition is completed what happens to the property afterwards is pretty much anyone's guess.
Known fact - In late August of 1972 John List's house in Westfield, New Jersey (The 19 Room Victorian Mansion where he committed the murders) was mysteriously set on fire and was destroyed (Remains unsolved) 10 Months after he murdered his family and disappeared (Until June 1, 1989 when he was finally caught) 2 years after the fire a new house was built on the same site after the property was sold.