I'm considering my first attempt at wholesaling, but the situation is both convenient and unfortunate:There happens to be a vacant house across the street and a few doors down from me, that I didn't realize was vacant...

Go to your notebook right now.Open to an empty page.At the top, write down the current month, the current day and the year 5 years from now (for example, March 1, 2021).Then, beneath that, write down what you want to be, do and have in your life at that point."

The car is trashy looking, attracts stray cats that live beneath it, its hard to work around when mowing and raking leaves.......It has to go.

As a starter, a newbie will have to raise him/herself through sweat and tears and it will be awhile before some jobs/tasks will be beneath one's "time value".Out of curiosity, and since you mentioned "opportunity costs and competitive advantage", why don't you pay someone $200, or $300, or even $500 (actually, how much it would make sense to you?)

That could be new shimming or sanding/cutting some thickness off the door.

We live well beneath our means and save money so we can keep buying houses.

So since homes are made of cellulose and mold spores are ubiquitous in the normal outdoor environment, we need to determine somehow what has been wet.Preforming visual inspections for mold is also possible in attics, crawlspaces, beneath cabinets, etc.

What I still do:  live beneath our means (usually!)

Anyway, over the course of last few months, I have befriended the builder and he recently told me, the penthouse unit has fallen out of contract, it was pending for so long because beneath the unit are 2 commercial units and the town would not issue C/O for penthouse, while those were under construction.

You may have to take yours apart, grind the sides of the ball flat and put back together with shims to prevent rotation.