It's a growing blight on Long Island - vacant and abandoned dwellings that have fallen into disrepair during foreclosure - and they're having a significant impact on the Long Island economy.

According to a News 12/Newsday investigation both Nassau and Suffolk lead the state in the number of abandoned or "zombie" homes, costing their neighbors more than $400 million in decreased home values.

Click the link below for expanded interviews detailing the problem.

Zombie Homes.  Only on News 12 Long Island and Newsday.