Reach out to a landscape architect or civil engineer. 

I’ve heard people not offering cash and there is then a refusal to leave followed by months of litigation. 

It's not in all areas.So talk to an attorney before doing anything like this, you don't want to break any laws or incur any civil or criminal liability.

It has to be that way because people cannot remain civil and objective and skewer the policy and not the people.  

If it is government civil service, medical profession, you may consider both.  

We also sue in civil court for damages as we were led to believe that buyer that he would purchase or have the property close before foreclosure.So, you didn't put the seller out at all because he was going to lose it anyway?

I used to litigate commercial cases in big New York law firms, before gradually shifting into real estate and hospitality litigation.

I have over 25 years experience in Land Surveying, General Construction, Civil Engineering & Land Development.

@James PhanInsurance companies typically will do nothing - that is why you see houses sucked jnto the ocean that you know was inevitable. i would get an attorney that is not a friend to send them a certified letter noting you believe the wall has moved and theh may want to have a civil engineer review itanother option is to call the county inspections division and have them come take a look, theh may require the owner also to do somethingits easy to fix (may be costly).also all of this assumes nothing was done by you to undermine the footings to the wall

I do site civil and land use planning in San Diego and most of my clients aren't up on codes, but a couple have some understanding and it helps us both understand each other when we discuss a project.