Polybutylene Piping:

 This issue has been around for more than 20 years, but it seems now the insurance companies are getting better about asking about this type of piping on a more proactive basis.  It's a fair bet that if the insurance company finds out that a particular house has Polybutylene in it (often referred to as "gray pipe"), then they will not write the policy until it is replaced.  Again since the insurance industry is so fragmented and ever in flux, nothing is 100% but as you might imagine, they have very little incentive to write insurance on a home with a known risk that is quite literally attached to it.  Most of the Polybutylene piping is actually found in manufactured homes in this area.  I have found it in a few dozen times in site-built single family homes in Brevard (much higher incidence of this plumbing in Orange and Volusia counties) but that is a couple dozen out of 8,000-9,000 inspections that I've completed so it's really quite rare in this area.  It's most commonly found in homes that were built in the late 80's through the 90's (or renovated in the time period).  It is most commonly replaced with PEX or CPVC when found.  You can do a quick search on the Internet to see pictures of it and why it's an issue.  It's quite easily spotted, in most cases as it is visible under sinks and behind toilets. On a site-built home it's typically run throughout the entire attic so when it fails it can make a real mess!  On a manufactured home, most of it is run under the house only penetrating the living envelope at each point of use.