:-) Outside the US I use the Corelogic calculator because our local insurance companies provide a no-frill version for free. 

You should also request an estoppel so the tenants can confirm that the info you were given in the lease is still current and correct (you never know if the owner gives you an old lease with old info, and maybe the tenant has actually signed a more current version). 

Longer version told in Bigger Pockets Podcast #82David KrulacBigger Pockets Podcast #82

Hi Steve,I am certianly no expert but I believe the P&S agreement on a Sub 2 is not necessarily entirely different to a standard P&S agreement but I have seen Sub 2 versions to have verbiage such as the excerpt in the sample below, in addition to all the other standard clauses/ sections - as with anything, I would suggest you run this past your attorney to confirm it works in your state/ for your needs.

Upfront expenses and monthly payments must be considered when calculating the return on your investment.EXAMPLEI will provide details below, but here's the short version for those who hate to read or do math.

It must meet the requirements per the building code IRC (I think Massachusetts follows a modified version of the IRC) you must provide the required amount of light, air/ vent, and egress.

We actually were one of their first clients when they only had the dos professional version.  

We follow a version of EOS so we have yearly goals with quarterly rocks.

Do you have access to the paid version of airdna to find comparable properties that are cash flowing at 500-650 a night? 

Short version, most people who treat it like a side hustle fail because they don't have enough time to dedicate to it and trust others when they shouldn't.