The landlord verification is key because you want to make sure the previous landlord had no major issues and verify that they took care of the previous property.  

Cash is great, if it's your own and you can spare it, but for fix and flip I would rather have my cash making money the whole time in index funds and just use verified line of credit or hard money since I don't mind the holding costs for allowing my own cash to work while I am flipping.

Did you call their employer and see their pay stubs to verify income?

verify marketability with someone with knowledge of area.

Need to verify, but there's only a very small chance there's enough room to convert it to a two-car, so current garage situation is likely as good as it gets. 

@Xiaoyan Liang @Lien Vuong1) You can use your business funds IF you own 100% of the business and it will not harm your business (You will need a CPA or letter from accountant)2) Yes we will verify you are still in the business.

You need two consecutive years of income from one profession, once you have two years that can be verified through your tax returns you will want an average income of about $45,000 per year (which probably means you'll need to wait for a third year).  

I would reach out to a smaller local bank (probably several actually), and verify that you can get approved for a loan.

(Verify that if you have a unique type of loan.)

Hard money lenders or bridge lenders will lend to an entity and the members of that entity PG the deal (meaning the have their credit/background pulled/checked, they provide asset statements, and verify their experience in investing to date).