[forher]

Can't say I know much but you can get a radon test especially if there is a lot of granite in the kitchen. I believe the owners are supposed to hang these "absorbers" or whatever they are called for a few days. They can't air the house or run fans, etc. it will measure the amt of radon in the area. Granite gives of radon. hope this helps.
I would ask the realtor, too.