-set up a good system with some controls in place to ensure your invoices approved/checks cut and paid is being monitored.

Basically, I just get copies of invoices for anything that is done during the month along with my monthly statement. 

She has not got it fixed but sending me the invoice of $2100.

How are invoices tracked and verified against bids?

You just don't know until you have copies of the invoices!

Invoices we send our tenants, When we receive a Security Deposit, Pet Deposit, Late Fees, Etc.

It does everything I need and a bunch of things I didn't know that I needed (Property Management invoicing, easy of setting up bookings direct for friends and family, etc.).Yes, there is a ton of noise about breaking away from OTAs.

Once all the repairs have been completed and all invoices have been submitted, the insurance carrier will finalize their subrogation demand to recover their settlement & your deductible.While there are a few comments discussing the issues with insurance coverage & premium surcharge, the size of this loss warrants filing an insurance claim and illustrates the benefits of insurance. 

I told him I was going to send him a copy of the invoice from the person that did the work and the pictures before he moved in and pictures of how he left he property.Any advice?

I told him I was going to send him a copy of the invoice from the person that did the work and the pictures before he moved in and pictures of how he left the property.Any advice?