How about the simple obvious that the inputs to deliver the service/product have a base-line and market prices have, OBVIOUSLY, been at about as lean of operating profit margins as can be. 

And as investors we should know this, but always anticipate higher costs and longer waits.EXAMPLE Breakdown of Costs:Plan Purchase: $1,500Permitting Fees: $2,500-7,500Site Preparation (grading, utilities, foundation): $20,000–$30,000ADUs require separate utility connections for water, electricity, and sewer but you can tap into existing utilities at the primary houseIn Raleigh you CANNOT split lots fee simple, so setting up completely separate utilities would not allow you to section off the ADU as of nowYour ADU must be on a permanent foundation (no wheels, no ability to move the structure)Construction (labor and materials): $100,000–$150,000Low-grade: $150–$180/sq ft averageMid-grade: $180–$220/sq ft averageHigh-end: $220–$250/sq ft averageLandscaping/Finishing Touches: $5,000Total Estimated Cost: $125,000–$200,000You could easily spend $200k+ with super end high finishes, custom designs, complicated sitework, adding a second story or more sqft, etc.

It was pretty simple did you have it verified by an attorney or the ones on apartments.com are already verified?

For a simple/budget-friendly option, Google sheets/Excel can actually be a great starting point.8.

It's a simple solution, get more info.

It's just that simple. 

I see so many new investors that lose thousands, sometimes tens of thousands, every year because they make simple mistakes.

Maybe begin with a simple buy-and-hold single family home or do a house-hack.

Let’s collaborate and share insights...sometimes a simple conversation can spark your next big move. 

Even creating a simple model to evaluate potential deals or predict returns could be a fun way to combine your interests while gaining hands-on experience.The most important thing is to start somewhere.