Myself as a realtor pre vet its completely legal as long as not based on a protected class such as race etc. 

With C class, the easier it is to maintain the better, and shaker cabinets are in abundance so if you have to replace a door or drawer in the future that makes it easier.

I will echo everyone's comments: Find a good PM, stay in C class neighborhoods, know that it's a long game, and that you're going to be writing a personal check now and then if something big goes wrong.

You want to keep paying cheap rent but get an A-class rental in exchange.

Most of the products I order are to sanitize, but eco-friendly, not only for the environment, but I do not care to burn my lungs with chemicals or get cancer. 

For example, a 10% return (or reward) can be worth the risk if you are investing in a Class A single-family rental in a great market with an A+ tenant, but not worth the risk at all if betting on a 16-seed to make it to the Final Four in March Madness.Investors in mortgage bonds utilize the risk-and-reward framework when allocating how to invest capital.

They all busted *** for years, some took classes too.

Separating by classes allows for separate P&Ls for each property. 

The current interest rate environment has put a damper on a lot of investor's plans to execute a cash out refinance. 

I am new to real estate investing, and I'm beginning classes toward agent licensure in June.