Go to the website for the town> then the Tax Assessor page> then look for a link to online property information databaseThere are several different companies providing this service in MA, so it is easiest to simply start with the town website and go from there. 

Are there hard money lenders which simply loan to the LLC entity?

Simply waiting 30 days from purchase is not sufficient.

If he were, anyone getting a mortgage for a house with an ADU would need a commercial loan, and that's simply not the case.  

Note: it's not simply dust from the house.

My friend also happen to have a drain line in running through the backyard so "winning ".

Why not simply loan your LLC (if you have one) $7,500 to $10,000 and pay yourself interest from the LLC?  

@Vanessa Deluca, they may be undecided on what entity they will take title - LLC, personal name, etc.They also may be doing a 1031 exchange which involved assigning the purchase rights to their QI.They may want the actual purchasing entity to remain anonymous for a while - think celebrities etc.They might be trying to simply get it under contract and then find a different end buyer.When the clause doesn't remove their liability to perform it eliminates most of the unscrupulous type wholesalers and is probably nothing nefarious..

Could be a win-win.

If someone sued you and wins then yes your leveraged asset is vulnerable in either case.