@Cindy Cheng, Any tax paying entity can do a 1031 exchange. 

It’s amazing how little paperwork is involved when your paying cash.

Your profit on deal #1 is $25k so you would pay taxes on that.

Even that is a few hundred if you DIY it, perhaps more if you pay someone.

The good ones will carefully document all the damage and then get the insurance company to pay for everything damaged. 

Also with the brrrr strategy will I get a DSCR loan to pay back the personal loan?

I typically have my framers install them so I dont pay ridiculous install fees from "window installers".Hope this helps!

If the rental is in Florida, a google search says "Florida law doesn't forbid a tenant from using their security deposit as their final rental payment or for paying due rent.

So for this program if you qualify and are able to afford the full value of the home you only have to pay the mortgage on 50% and then after 3 years you can sell the home and keep half of the profits and any extra equity or gain in value and buy another home in another area?   

When I do my own units, should I charge a really low price to my own property to make it self sufficient as it would then cover its own expenses, or should I charge the regular full price for cleaning and pay myself the entire cost for cleaning to boost my income?