For instance, a worksheet calculator that you can depend on for accurate rehab numbers, a coach or mentor that has experience wholesaling whose brain you can pick, a curious, principled solution-based mindset, willingness to find sellers that are NOT on the market, and for good measure -- steal underpants!

Since you're aiming to purchase a multi-family property in Long Island, especially with the help of a capital partner, it’s crucial to run the numbers carefully (rental income vs expenses) to ensure you’re set up for success. 

No one can explain how this happened and it was recently surveyed 3 weeks ago with the measurements in the attached picture.

A few things to consider if you want to go out of your market:1) What are your investing goals and the metrics you are measuring by?

I really can't say what my average return was because over the decades I didn't keep track, it's not a relevant measurement.

If you're aiming for growth and can secure a low-interest mortgage, financing might be the better play.

It simply is a metric to measure that your odds of getting a return are better.

Just to support a previous comment, please run your own numbers for your ROI, CoC, or whatever other metric you are aiming for.specially if they tell you they will guarantee any specific return (read the fine print, this wont happen if they have no money to pay you). 

The other options you are playing with fire as using a HELOC that is paying interest is essentially buying with 100% financing.Having no skin in the game has always been a high risk strategy and people were able to get away with it the past few years due to the money supply and inflation but I would not use that as the measuring stick.

Even if it is just a walkaround and not measuring anything; the contractor should be there if you are new to this to give you an estimate..