BP has various tools to help you analyze your deals (rentals, flips, wholesale, etc). : https://www.biggerpockets.com/investment-calculators7.

Be sure to check out the free tools BP provides to help analyze deals you may have and also market insights.

@Alec JacobsI would use platforms like Zillow Rental Manager or Avail for rental management, for listings and tenant screening, and tools like Cozy or Buildium for rent collection.

Tools like automated messaging and keyless entry can really streamline things. 

For the second part, another guy came out, and in the name of "multiple streams of income", he sold another three-day stock workshop course to me.

With expert guidance, tailored training, and a supportive community that will align you with the tools you need to fast-track your success and avoid common pitfalls.

In that case, this would need to be an all-cash purchase and could be sold along with any liens, violations, or judgments against the property to be the responsibility of the purchaser.To your point, this is difficult but feasible.

I'd ask around some GC's that are higher level they may have some decent project management/financial tools if they're at scale.

We recently sold our one rental, but we are looking for our next deal/project in the area.

@Keaton Sheffert Zoning changes can be a valuable tool in real estate.