Any local bank that does this kind of financing should be able to approve you as long as you have a good enough credit score and never declared BK.

✅ Do research your local market before setting prices.What questions do you have about getting started?

I take a slightly different approach and try to partner with local vendors and get commission/kick backs. 

You need a local/state specific lease.2.

I adjust pricing based on demand, like raising rates during peak season or local events, and lowering them in slower months to stay competitive.

Networking, local meetups, door knocking, mailers, wholesalers, online forums specific to your area of interest.  

There are a couple of car washes in my local area that are for sale that I am interested in but do not know where to start. 

I suggest you start out by meeting like minded people and here is a link to a local meetup in the OC: https://www.biggerpockets.com/forums/521/topics/1225233-ocre...Good Investing...

I have seen REI Hub recommended on here, but I am unsure of their ability to work with local banks, so if anyone has any experience they can speak of that would be greatly appreciated.  

Tyler local, so sparked my interest whenever I see anyone post about the area.Given that your duplex is fully paid off and generating a steady cash flow of $1400 per month, it's understandable that you're having second thoughts about selling it.