If it is a contractor that is more organized they will likely do this already, if they are shooting from the hip "based on experience" they will likely just give you a total $ value. 

Based on an earlier post it looks like that is not legal in MA correct?

@Greg Loberg I have experience working with them but on the title side.They're based in Martinsburg, WV. 

We've never used percentage-based criteria, like the 70% Rule, for purchases.

I've been a licensed agent here in Maine at the Augusta-based Pouliot Real Estate for the last 2 years, but began my real estate career in Savannah, Georgia (my GA license is currently inactive).

I’m based in Portland, Oregon, where residential investing seems challenging due to landlord-unfriendly policies and negative cash flow on higher-quality properties.

I wanted a truly hands-off, white-glove experience and, after extensive research, REI Nation seemed to be a reputable choice based on investor feedback.Fast forward to today—I now own multiple properties with them, and here’s my candid review.The GoodCrisis Management:My first property with REI Nation came just before the infamous three-year rollercoaster.

Quote from @Christian Styles: Hey Sam, I've used both Propwire and Propstream, they seem quite similar but propwire has a free base version and propstream does not.

Just some notes to consider based on what your unit is like. 

I think it is fair to say that there is somewhat of a tradeoff between markets that provide positive cash flow on day one and relatively high appreciation-based markets.