You might need to just start playing with the formula to see how it goes.

What is the formula (steps)  that I should look for? 

Does the 1:1:1 formula work in LA?

For a $450,000 property with a 6.625% interest rate, the principal reduction over 5 years can be calculated using an amortization formula, revealing a significant amount of equity built through loan paydown alone.Take a look at the table below.

When working out the money side, remember this formula: Cash on Cash Return = (Annual Rental Income - Annual Expenses (including HELOC interest)) / Total Cash InvestmentExample:HELOC Used for Down Payment: $50,000HELOC Interest Rate: 6% (This can vary)Annual HELOC Interest Expense: $50,000 x 6% = $3,000

.), the new Formula 1 race track, the Green School, and all the projects planned for Quintana Roo, I see that it will take time for that balance to shift, and strong demand for Tulum will continue.

I'm curious, what formula do you all use for running comps?

I learned much about where money was well spent and financial formulas. 

As to gurus teaching - to me it's all about 'ideas' and not so much a 'paint-by-number' formula.

I've come up with a formula for our market, which has a vacancy rate currently of 3%.