There are calculators on this website, and more information on the website about how to do this mathematically.This is not a charity game .

I believe this is a game of being patient --- long game of 5-10 years to see cashflow especially if you are financing. 

This book got me off the sidelines and in the game: Build a Rental Property Empire by Mark Ferguson and this book elevated my landlording methods: Managing Rental Properties by Heather & Brandon Turner~ Lindsey

Juice is not worth the squeeze. linden is far from adu's making any sense. adu's are cost prohibitive from the beginning. we are talking $200+ per sq ft to build. the idea to build is to have equity. you can't build an ADU in linden and get the numbers to work on new construction at the lending of 75% after built value max thresholds. you'll be bringing money to the table over the minimum for what, to change the game?

When getting started its a careful game of making sure you are ready and have funds and do not rush it, as one bad deal and if it goes real bad can slow you down by several years, which you do not want to do.

In the beginning it might be all fun and games with X's & O's and spreadsheets of mortgage quote comparisons but when it comes down to the end of the contract date, it'll boil down to how stressful (it was or wasn't) and how direct the mortgage professional was in caring enough to get it closed.

Property Management Experience:Living on-site game me a chance to learn about property management firsthand.

The only way to combat this is to play their stupid game an fight your property taxes every year. 

@Ariel GonzalezI would like to know how much capital, AKA, skin in the game they have.

If it is mostly smoke damage to the interior it will be ok, but if the roof caught fire and burned away that's a whole different ball game.