Heavy sodium hypochlorite will kill any mold or mildew spores out there, as chlorine kills virtually anything that it comes into contact with (some protozoa and cysts can escape in water).

We planted a seed with the listing agent (since the property had been on the market a while), I came back around and watered that seed and BOOM that flower came up through the dirt and we plucked it!

But in the area it’s possible the water freezes in the winter.

You are in treacherous waters here ... the prospective tenant told you they were receiving disability making them a protected class so be careful. 

Even a $50,000 home needs a new boiler, roof, water hear, and to repair regular wear and tear.

The owner has been selling the park owned homes either for cash or on a rent to own.Taxes are $45k/yearThis park is on city water but a private sewer.

The tree keeps growing and producing more fruit(money) over time and you still have the tree which is likely worth more than when you acquired it.You have to make sure it is watered and fertilized and maybe pruned occasionally.

I've put almost $25,000 into the house with a major repair for the well water system. 

I just started going to this one: https://www.meetup.com/Central...They meet in Somerville, Newark, and Scotch Plains.

(Home Depot has about 40 different kinds) You want one with a lot of silicone in it for water exposure.fwiw, what you fill the crack with doesn't really matter all that much as it's just a way to keep from needing so much caulk.