January 1 - I checked my invoice provided by the apartment (as I did the previous 11 months) and THEY had prorated my rent and water bill to January 15 rather than for the entire month at which point It seemed clear that they agreed with me moving out "early".

Is it a monthly invoice, or do they deduct from deposits that they collected?

And they will have to continue to remove my ads EVERY DAY.Because I can guaran-dang-tee you I'm more intelligent, just as hardworking, and better at the people skills than the investors out there who are lacking in ethics or don't know how to build partnerships for the long-game.All of this to say, don't let trash get into your mind and detract you.

Your manager may only be part time anyways and might not have time to do the reading, and then you have to invoice the water/sewer bills each month. 

Send invoices and copies of bills paid to escrow. 

Give them an invoice for the entire cost of the damages, and tell them it is due on April 1.

The arrangement with the builder is that on the 1st of the month, he will send me the invoices received from the previous month from the various sub-contractors.

Two of the safe harbors that can help you deduct improvements are below:1) 2500 de minimis safe harbor.the safe harbor applies to amounts paid during the tax year to acquire or produce what the regs call a “unit of property” (UOP), you must meet these requirements: (1)you need to have written accounting procedures treating as an expense for non-tax purposes amounts paid for property costing less than a specified dollar amount (which will be 2500 for you), or with an economic useful life of 12 months or less;.(2) the taxpayer treats the amount paid for the property as an expense on its books and records in accordance with its accounting procedures. ( do this on your bookkeeping software or whatever you utilize)(3) the amount paid for the UOP doesn't exceed $2,500. as substantiated by the invoiceNote: The cost for the Unit of Property includes l additional costs (for example, delivery fees, installation services, or similar costs) if these additional costs are included on the same invoice with the property.2) Small taxpayer safe harbor: To be eligible for the safe harbor, the total amount of improvements for the property for the tax year may not exceed the lesser of $10,000 or2% of the property's unadjusted basis.If the total amount paid exceeds the safe harbor threshold, the safe harbor does not apply to any amounts spent during the tax year.

I’ve ran quite a few numbers on many properties in my area and what I’m seeing is that hitting one percent is dang tough.

If you aren't evicting and an otherwise cooperating tenant causes property damage then you simply provide them 24 hour notice that someone will be entering the property to perform repairs, you pay that person yourself to perform the repairs while taking before and after pictures, then you send the tenant notice to pay for the repairs with a copy of the bill/invoice.