I wrote a Blog on this very subject.You will eventually learn enough to be of help to yourself, just keep doing it and record the prices so you can start to get a feel for SF costs.One thing I can offer is this website,I have checked them out and they are fairly accurate , you enter your zipcode, I just hate for people to be off by even $10k, that could be your profit on some projects, right?

There’s plenty of educational content out there (books, podcasts, YouTube, forum posts, blogs, you name it!)

Here's a guide that describes what good cash flow looks like and how to analyze a property.https://www.biggerpockets.com/blog/rental-property-cash-flow...

My duplex had an additional unit built in the basement and discovered by city inspectors when a neighboring squabble caused buildings department to check houses on the block and my house had 3 mailboxes out front.

Click the magnifying glass in the upper-right corner, enter your criteria, then narrow the focus down by blog, forum, or other categories.To be honest, the search feature in BP is lacking basic functionality.

what are your favorite tools to discover and compare real estate markets?

How about how many blogs you have?

Online videos on social media platforms, educating your clients about nuances in private lending, coming on a popular blog to help people with financing issues, and connecting with others in your industry that specialize in something else. 

Bouncing payments or only being an illness or accident away from notbeing able to pay the rent, are issues considered by our underwriting.Letter Of ExplanationAny time there are credit issues or we discover an inconsistency, we require a written letter ofexplanation (LOX).

I discovered BP about 3 years ago and it has definitely given some perspective.