Multiple reasons are possible ivermor. It would be best to provide the actual address and we can easily determine why. Some possible explanations are... home is now listed by a different agent or brokerage, the listing agent deleted the previous Trulia listing and added it back, the home sold (investment/fixer) - was remodeled and is now on the market again. These are just a few of the possibilities. Again, with the actual address we should be able to easily determine what is going on.