Did you have to get that tree over the house removed or just trimmed down?

It has beautiful high ceilings and original trim and doors, and a great layout. 

Install new door knobs all inside doors and two (front/back) doors. 16, Install new trim/baseboards & paint. 17.

This closing may need to include title insurance and all the other trimmings depending on your answer to the above question about passing title (or not).You have potential issues with the Dodd-Frank Act, with imposing a balloon payment, with properly notifying at least two offices of the county of record (treasurer and assessor). 

Drywall, paint , trim flooring, kitchenette, bar the whole deal!

later learned they like to gnaw woodwork/trim

Things like trim, doors, cabinets, etc... really add up once you get past the obvious major systems and mechanicals. 

That should help trim down your list.

My theory is the trees, all of the lots on this street are heavily treed with well trimmed live oaks, it makes a very good impression on the drive in.  

If you have tons of tree limbs falling on lots of units, that's less "random" and more of an issue around deferred tree-trimming maintenance.