A house built in 1960's listed as 2006?

[Gilbert Jagot]

I noticed that a house that I KNOW was built in the 1960s is listed on Zillow as BUILT in 2006. The house WAS flooded in Hurricane Katrina but not torn down, just gutted and rehabbed. The slab, framing, structure, etc are still original. 

Some other houses in the area were also listed like this.

How does this work in the real estate world?

I know this info is true since I grew up on that street in the starting in the late 1960s and had friends that lived in that house.

Zillow house in New Orleans is 2006 or 196x?