Sometimes, you can ask as a closing condition that all units be delivered vacant. 

As such, I'm interested in working with a contractor that has experience with all aspects of construction, is reliable and used to working with out of state investors (and can provide references), and delivers on the work that was promised. 

If you can consistently deliver on time - you will be in high demand.Cost of legal services has not been a frequent complaint, by the way.Best luck!

If so maybe you want to deliver one side vacant?

Then you can deliver the new key in person and outwit them.   

@Brian Burke would you agree that it is better to under promise and over deliver then?

If a client delivers detailed, timely, well-organized docs, there should be no reason or excuse for material errors such as the ones you described.

From what I am reading the tenant is not asking you to deliver anything to her.

Were the later materials actually "incorporated into the house" (I assume they were not acting in any way as just a "material supplier" so simply buying them and even delivering them without installing them would not count as work).

They give you up to $5K credit, deliver the whole caboodle and you can have them set it up or do it yourself.