That usually means a foreclosure stricken area where values are declining and the market is unstable.

Hi HELOCs, very unstable and full of pitfalls.Life insurance?

If the American Dollar become so unstable, China can demand currency equivalent - possibly in precious metals with value equivalent to the Chinese currency.

Within 2 weeks, I realized I had an extremely high maintenance, aggressive, lawsuit threatening, angry, unstable tenant that was going to be a problem.

50% is certainly unstable, depending on the town and the shape of the buildings and units.

Investors are turning what once was a stable family neighborhood into an unstable rental community.

For example, if the building is on an unstable substrate that continues to shift, that might be something that makes issues reappear.

A person that can't afford to FHA a sub $100k home is by definition unstable and unstable people generally stay unstable. 

Chicago's political/tax climate is very unstable.

There is an auction on Friday for the 5 lots that the county is attempting to recover past due taxes on for a total of about $42,000 .. seems crazy to attempt to sell these lots to people knowing that the land is unstable and not suitable for anything.