Double closing or simultaneous closing at a minimum... or better yet use transactional hard money loans and close with your buyer the next day.  

Even if he is intending to double close, You could say you want evidence he has an interest in the property and again you want to see his contract. 

It would have to be quite a stress to crack a double or triple glazed modern window.Another possibility {though unlikely} is the sash has warped/pulled away from the glazing and water entered between the two ... that water has since frozen and the pressure has cracked the glazing.I'm sure it's not been as cold in Philly as we regularly experience (today is the first day warmer than 0F in a month) and the cold never makes the glass crack here ... especially in a modern thermo-pane.

We have a goal to get 5 (10 doors) in 12 months so my wife can stay home and raise our kiddos and eventually We could both do this full time however I'm interested in other ways to achieve this aside from the 25% down conventional model as our capital is limited and even grow faster, could we double our number??

Thanks....Here is the exact wording I use "Compensating Factors can include additional requirements such as double deposit or rent paid in advance for applicants who fall short of above criteria."

Double hung windows can be screwed through the frame. 

I have double/triple checked everything and it is all entered the same...

Then we still have the old issues of the CFD, insurance assignments, double coverage of insurance that can be illegal, the due on sale clause, the servicing and collection of payments and the filing of "stale dated" deeds.Due to technology many land recording offices have changed document requirements, margins have changed and do change for space to apply recording information.

People are paying double rent.

The company seemed to be growing, two years ago, this building doubled, maybe tripled in size.