I don't trust any FPE panels as besides the breakers being defective the busbars themselves have also been known to cause fires because they used a screw that was undersized to attach the busbar.

I have a personality defect, in that I just think I can do anything. 

In my area, we have a 2 year window where the seller can be held responsible if they failed to disclose defects.

If you charged for the mower or a known, hidden defect that was dangerous, might be a problem.

@Sam Tright Every state is different and also vary as to whether this timeline cures a defect that would result in a “voided sale”.

You can negotiate the purchase price if you find major defects on the inspection report. 

(Prevention is always less costly than remediation or trying to achieve quality through inspection and additional trips or rework.)Quality has a performance standard of zero defects.

For example, MANY for sale by owners don't realize they need to disclose material defects about the property.

Maybe an error in construction, or maybe sawing tolerances way out of wack somewhere, or maybe saturated with water from bad flexible water pipe, or a leaking shark bite, etc..If it's water that caused it maybe it would be flexible when stepped on, maybe not.To me this does not seem like a cosmetic issue, and it might be a construction defect, or some kind of water damage.If it were mine, I would open the floor up and have a look.

The problem with structural defects was highlighted by two good responses above, lots of people don't know what they are talking about.