Ask your agent for the rates and plug them into the formulas below. 

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

Those fields that are gray in color have been locked as they are hard coded with formulas.  

@John Underwood are you using excel with specific formulas?

Most lenders want to see at least a year of residency before you buy another primary residence, but even this is not a perfect formula. 

I "borrowed" the formula's and created my own spreadsheet to quickly analyze deals.  

So much so that the formula to determine the value of a commercial property is Net Operating Income / Cap Rate = Property Value. 

Pay the bill yourself, then reimburse yourself by charging the tenants based on a formula.

Additionally, I aim to refine my approach to financial analysis by adopting a structured formula for calculating investment metrics tailored to my investors' needs.

@Carlos Ptriawan @Jay Hinrichs Residential ground leases in Maryland (Baltimore City mainly but also surrounding counties) are typically 99-year leases renewable in perpetuity, meaning as long as the rent continues to be paid the lease is automatically renewed for 99 more.No pay or slow pay and you can loose your leasehold property.You can "redeem" the ground (well except for "irredeemable" ground rents, but those are quite rare and another story) by buying out the owner of the fee simple interest a cap rate formula based upon the date the original lease was created.