I found a link on the City of Biloxi website that led to a portal for viewing land parcels in Biloxi. You can search by building address or by owner.
The Coast Civil Defense and Emergency Management officers released updated hurricane evacuation zone maps in 2001. That page on the WLOX site has links to the maps for most of the coastal cities. Using the above parcel viewer and the evacuation zone map for Biloxi, you can make a reasonable guess as to the likelihood that someone’s house survived.
Most of Zone A, as one would expect, got hit pretty hard.