The short answer: there isn't a present comprehensive tool that all investors use for everything (yet).

. - Mindset's conditioned in a kind of FOMO position from covid bull-run, a stimulus action that present's a buyer surge, and a sold price surge, may be the spark for a real tangible bubble creation appreciation frenzy as those act upon FOMO to "grab the profit's" or "get in before it's too late", ignoring market basis fundamental's, thus in a feed-back-loop of rapid appreciation, ie "bubble". - I do not see risk in seller finance side of things as i don't see potentiality of mortgage rates dropping below 6% in any enduring manner.

Our partner, Seth Choate, identified the N Pasadena Ave property and presented it to us.

I personally think that the person who wrote that article about tax deductibility took a very aggressive stance for the deductibility of business travel as they included verbiage of personal time in their rationalization.I might personally be inclined to investigate further if one of my clients presented that specific case to me, and likely opt for not including it as deductions if they haven't begun operations yet.

In our age of digital nomads, seems like a potentially lucrative endeavor.

If the interest rates are high (double digits)-think about paying it down faster. 

This is so abusive and extortionist in nature, and so disconnected from any sense of reality I'd really have to question the general intelligence of the persons presenting such. 

So I've presented these same things to a few builders we know and they really have no real good responses to the above except that site build is better, then modular and manufactured is junk.

The rest is sitting in the savings and waiting to be used on the next deal if/when it presents itself.

It is my belief that if we pulled only those with 8 digit and more RE assets, the appreciation wins hands down.