The roofer gave me a invoice with high level bill of material, and a statement that it has 2 years of warranty and brand name of the shingles.It does not say brand name warranty or model or batch number etc. 

It's pretty difficult to get an investment mortgage at the moment. 

How did you find this deal and how did you negotiate it?

Investors do not like tenants that pay below market and re locked into long term leases. 

It's referred to as VTB (Vendor Take Back) or Seller Financing.

@Harsh Poshti  You do need to check with the local zoning office. 

It's no guarantee but it's a good place to start.

Non-profit or not, it will be UW as a business...the non-profit designation doesn't eliminate the lending review, just makes the proceeds non-taxable in order to be put to charitable use.

And it showed in their reviews.  

It would hold up to water or condensation from cups.