No matter what the TurboTax people say, rental property taxes are not a DIY job.When you buy a property, fix it up, and rent it out, you have different tax treatment for different expenses.When you buy, the price you pay, plus buying expenses, becomes your "basis".

Some companies offer some sort of ongoing inspection and treatment programs.

It's a great treatment for form-a-phobia and frees you to do the deal(s) you want

I have over $1,100 in receipts since January (I even bought shrink wrap window treatments to help him save heat, and his response to that was "When are you going to install them?

Then I started learning about the tax treatment of those expenses, and learned a lot, including things I'd never heard of - like the fact that you get to claim 1/27.5th of your property's value (house, not land) every year as depreciation - a game changer when crunching your numbers.I learned a lot about how to hunt for properties on the internet, and after a while I was running sims on specific properties to see how I thought they'd work.

I wouldn't go spending a ton of money though because the more you invest into the windows, the less return you'll see.When it comes to windows, I'd say you're better off doing a window treatment like higher-end curtains or custom wood blinds.

That may be viewed as a difference in sale price agreed by a seller with favorable tax treatment; however, the seller will be paying taxes eventually, so you can justify the difference and the time value of money, but depending on your state laws, few judges will accept the notion that a buyer needs to pay a fair price for a property and the seller's tax liability.There is also a difference between a bank having a prepayment penalty on a commercial deal for example and a seller, the seller is doing it simply to profit, the bank will profit as well but there is also the issue of portfolio management and at a much different level than any individual investor, where the bank and borrower agree that the loan remains outstanding to reduce being dumped with cash from any interest rate changes (going down) that in large amounts can cause losses to an insured bank.

Chlorine is only  added to water at a Water Treatment Plant to disinfect the water (This is what I design for a living). 

Also if you have other tenants and they want the same treatment and you do not allow it can be deemed discrimination and could be a fair housing violation.My thoughts are, as tough as it seems stuck to the agreement and your policies.

Other factors I look at for my buyer clients include flood zones, double yellow lines - especially numbered state roads, airstrips, shooting ranges, landfills, wastewater treatment plants, school zones, train tracks, industrial noise sources, neighboring businesses and cemeteries.