Per this NY Times article, the average American knows around 600 people.https://www.nytimes.com/2013/02/19/science/the-average-american-knows-how-many-people.html#:~:text=The%20average%20American%20knows%20about,do%20you%20know%20named%20Kevin%3FPer the US Census Bureau, the average American moves 11.7 time in their life, which based upon an approximate lifespan of 84 years, works out to be about every 7 years.https://www.census.gov/topics/population/migration/guidance/calculating-migration-expectancy.html#:~:text=Using%202007%20ACS%20data%2C%20it,one%20move%20per%20single%20yearSo, if the average American knows 600 people and they each move about every 7 years, that means that the average American knows around 85 people that move in any given year.How many of those moves do you want to be involved in?

It is the hardest thing, part art and part science.

I have many years of construction experience and have also done a fix and flip, in addition to ground up construction, as well as 10 years of entrepreneurial experience running a paddle board rental company, and advancing science through developing theoretical methods for efficient large scale simulations...I guess my problem is I can't seem to figure out how to find the money to do more projects, which is why I've been trying to sell my house.

Look into (and Google for) building science websites that will give you the whole scoop. 

Real estate investing is not rocket science, buy some books here on BP and don't pay anyone for their system!

The broker price opinion is based in comps so is not rocket science either. 

Investing in residential properties is not really rocket science.

I have been looking into the South Philadelphia market as the area is expecting the Bellwether District, a megadevelopment of industrial and life-science buildings, to be delivered in phases over the next dacade.

Investing in real estate is not rocket science, even though the gurus want you to believe them.

There is as much art as there is science to all of the above.Neighborhood classifications are the same way.