@Justin Wroblewski, I see a lot of recommendations for Venmo, Zelle, ChaseQuickPay yet these are not designed the same way a online rent payment software.

But they're designed and tuned differently. 

I did not expect retirement to go the way is has but now I have plenty of time to go around scouting properties and doing residential design work that fits the kind of lots all around me and even around the world.

Split all utilities 5 ways.

Look for opportunities that utilize the technology you know. 

What is the best way to find foreclosure, tax lien, and short sale auctions ( full and accurate listings) as I figured it would be more affordable utilizing those listings?

I would also make certain someone not paying their taxes is paying their utilities, because that could also add up if they aren't.

HOA dues are around $315/month and that includes water and utilities. 

Yale locks - all the top enterprise lock companies utilize them.

If you provide them with a scale drawing of your warehouse they will design a kit to fit and can either send you the building (for which you can get bids for erection of it) or they can provide you with a building and labor quote.