I measured the rough in as seen below.

Read this book - https://www.amazon.com/Every-Landlords-Property-Protection-Guide/dp/1413307000 - before getting into more complicated and expensive measures of protection.

More Stringent Lending Conditions: Some traditional commercial lenders, specifically local and regional banks, have been pulling back and tightening their lendingCONCLUSION: Asset prices are under pressure as required refinances over the next 18 months push owners to accept less favorable terms or give up equity to private real estate lendors3.

Just make sure to take your time and double-check your measurements as you go along.

To take measure of self, to learn and improve from "education via pain". 

I would like to know what type of security measures you all are taking to avid theft and other vandalism of the property. 

Without sales I can't measure how they are performing with rent to sales ratio.I won't rent to no credit tenants that will not disclose sales.

Obviously I’d suggest putting security measures in place like buying under an LLC.

If you have to save some $ somewhere: Get some exact measurements and go find a used , surplus, scratch and dent, fb marketplace, etc -- tub that fits (double tripple checking specs), for your contractor to install.

I started hinting a couple of months ago that I will need to take legal measures if he doesn't get caught up and back to consistent payments.