Next tonight, we showed you the homes swallowed by a giant sink hole in florida, caught on camera. As they fell into the growing pit. Well, more than 250 potential sink holes have been reported across... See More
Next tonight, we showed you the homes swallowed by a giant sink hole in florida, caught on camera. As they fell into the growing pit. Well, more than 250 potential sink holes have been reported across the state since may of last year. Tonight abc's steve osunsami is with the families that worry that they are next. Reporter: Angry families here could only watch as florida officials today started tearing down two of their broken homes, and pouring sand into the now 90 foot wide sink hole. The homeowners here knew this could happen two years ago. But were fighting with their insurance company to get it fixed. Of course I'm upset. I mean, there's our house. This was all the same level. Reporter: Just a few miles up the highway. While you guys are here it could go. Reporter: The ferraros have the same problem, a sink hole growing under their home. This entire area could fall into the earth. Could just collapse. With us in it. Reporter: The ground is already sinking in two places, in this report an engineer says the house could collapse. But now they can't sell the home. We live here, where will we go? Reporter: The experts tell us there are thousands of possible sink holes waiting to open up under florida homes. And these are just the new ones. More than 250 reported since may of last year. This one caught on tape in august, outside orlando. And in march, a man was killed in his own bed, when a sink hole opened up inside his house. We have a lot of retired people from up north, they bring their life savings and buy their home, now they are sitting there thinking, what am I going to do? Reporter: These are the signs, the stair step cracks and broken driveways. These are the expensive solutions insurance companies choose from. Driving beams deep into rock and attaching them to the house or stuffing truckloads of concrete deep into the loose soil. It's not a pretty sight. Nobody wants to have a sink hole. Reporter: We found families today racing to get the work done. This one put 19 trucks of cement into the ground. Steve osunsami, abc news, newport richie, florida. See the full report tonight on 20/20, home sweet home at 10:00 eastern.
This transcript has been automatically generated and may not be 100% accurate.