And in your defense the GC should have at the very least acknowledged receipt of the invoice and given a timetable for payment. 

That is a nuts number 4.3%.... dang.

@Jane Dang welcome from the Bay Area!

Meaning you pay the bill but then you send an invoice to the tenant therefore making them ultimately responsible for the water that they use.

Dang, I may have just dated myself.

I had 30 days to get an accounting to the tenant and didn't have one of the invoices from my repair person yet, so I estimated it.  

@Sal Zizzo Request all the invoices, work orders and related documents on any transaction you are not happy with.  

My partner and I just finished our first rehab project and I've been getting generalized invoices.

Things like:- who directs the work- are there contracts in place for the work- how are the contractors paid (it is generally better to pay them on a job basis and from an invoice they present)- who provides the tools- do they have their own insurance- do they advertise- do they work for othersThose are just some of the tests that could be used. 

Dang, 89k for some land and a slab/frame :) This will be interesting.