Variable cost and CapEx are where I see most investors make errors on their Pro Forma.  

Hard money typically refers to a company that has it's own underwriting guidelines, rates (9% - 15%), costs, draw process ect.

Renovations can cost more than you expect, add 10% to your overall number.

., you can tell it to write a JavaScript program that estimates what a cost segregation study would save, whether an S corporation makes sense, what return on investment a home generates and so on.

Is there any good rules of thumb to estimating the cost of a boiler?

FYI, most of my CFO clients borrow from HMLs that will lend up to 100% of their rehab costs. 

Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620 (approaching 22% probability of default), many blemishes, but should have no evictions in last 2 years.

Be sure to factor in repair costs to keep things profitable.

The mistake could be costly.

There are also additional costs of operating and maintaining an LLC, like separate bank accounts, annual report filings, tax filings, etc.2.