More importantly, I have found when doing major foundation work that not many structural engineers will sign off on pre-existing foundations with new framing anchored to it.

Does moving the fence over radically inhibit her preexisting use (clearances etc) on her side?

Yesterday my lender communicated that in order to get the final conditions cleared for underwriting each of the preexisting tenants (3 in a fourplex in FL) must sign a letter stating "I formally waive the rights to purchase the property I currently lease at...".

The fact that "you were approached" and this is not someone you had a pre-existing relationship with should make you nervous.

It sounds to me more like he threw them out because it's more likely to be overlooked and in case I questioned it he can just claim ignorance or pre-existing damages.How do you all address this?

It might be worth just drafting a letter yourself to the city (probably send it to the Service or Law Director) and see what happens.As for the pre-existing damage you found behind the drywall, you should definitely contact your realtor and see if anything can be done with that. 

This, of course, implies that you have pre-existing relationships with this partner and know what they are looking for.How do you find syndicators?

But that is essentially all the information I've received upon inheriting pre-existing tenants. 

We had a bad snow that took down a preexisting carport that damaged the tenants car.

FHFA is aware that, in certain jurisdictions, liens for unpaid homeowner association ("HOA") dues may be deemed to be senior to preexisting mortgage liens on a homeowner's property.