Just make sure to have an inspection period to check out all the units, review leases, make sure tenants are paying (are leases month to month, when leases go through, everyone paying on time or are some behind, how long have they been living there/did they just moved in).

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.

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

Make sure to hire an attorney to review both the A to B contract and the B to C contract.

Reviews can be fabricated.

He's not only educated me with over 30 emails where he reviewed my drawings and coached me along, but he also connected me with the departments I needed to get my permits.

I know that they are pretty big and competitive and also our competitor :) My management  company has great reviews and better pricing, which allows you to save PM me if you are interested in discussing it further. 

I see that google reviews are also being posted.

Are you printing standard envelopes #10 etc or do you print any heavier weight or custom size envelopes?

You can also search Google and read reviews.