Credit and assets is the main characters and tools when it comes to lending or real estate financing.

Tools like Rentometer and Zillow can help.

I also believe that we can utilize technological tools such as data analytics platforms and market research databases to track key metrics, market supply and demand, rental rates, and occupancy trends.

Most sellers/homeowners only know 1 way to buy & sell, you the investor should have multiple acquisition tools in your tool belt that fit your investment style.

Just trying to get started and feel, with the tools available, I may have found a good deal in my area.  

They also offer a website builder to create your own website and you can also pay to upgrade and use other tools. 

It's a great tool but expensive depending on budget.

With this situation, it makes me wonder what tools he could have used to figure out if that was a good flip or not.

Use the "Find a Lender" tool.

Zillow's API is no longer offered (or they make it extremely hard to access these days - have had no luck finding an updated link/page for it), Redfin has broad-stroke CSVs you can download that only give 5-10 fields of info and not often at the metro area, you can't legally create a tool to crawl these websites...I'm looking for 1 (or a handful of sources) to pull together basic metrics at the metro/city level for US real estate.