Apartment neighbors are sometimes noisy, and everyone needs to work it out as they are adults. 

Always screen every adult, age 18 or older.

Those are the kind of rentals that attract bad tenants.You can dramatically reduce that number by posting a statement that you will require a credit / criminal background screening on all adults 18 years and older.

Supposedly it's only mostly hitting elder adults, that mostly have other health issues.This is the best write up I have found so far, more Scientific, but from Feb. 14th.https://wattsupwiththat.com/20...Good Conclusion from the article:Updated WUWT conclusionsIs Wuhan a serious public health concern?

Two consenting adults are agreeing to make an amendment to their business relationship.

Another point is I’ve been in the construction industry most of my adult life so we will be building the home ourselves, saving 10+% on whatever size home we build.

Are there any issues I should know about before I run a background screening for all the adults in the household?

For purposes of this section, "family" shall mean:(1) An individual or any number of individuals related by blood or marriage;(2) A group of not more than five individuals not so related;(3) A group of not more than ten members of a religious order who live together in a single dwelling unit; or(4) A group of not more than ten adults, the majority of whom are 60 years of age or older, who live together in a single dwelling unit, are all capable of self-preservation without assistance in the event of an emergency, and do not need to live in a supervised environment.Does this mean that 5 unrelated people can live in the same house?

They're adults and need to determine that themselves.

Tell me some advice, give me some vantage points and things I should take interest in as a young adult interested in investing