Background: Currently doing a Fannie REFI on two duplexes (originally purchased 2013 at 5%).  

Technically you do come out of pocket but it's only from the sweat equity I added to the property.

If the seller financing is an option, is it possible to sell the home while the seller is technically still the “bank” in order to pay off whatever is owed to the seller?

Background is like most military REIs, I move-buy and rehab-rent my properties.

Plus, the additional benefit of mortgage pay down.With your background it may make sense to concentrate on value-add opportunities where you can reposition a property and cash-out refi in a couple of years to keep doing more deals.

Aside from providing the basics (ie. listing tool to get the property published to 10+ major sites, scheduling tool to schedule viewings, tenant screening with comprehensive applications -- pulled reports from TransUnion, which include nationwide criminal background checks + credit checks + eviction history, digital lease creation tool, rent collection tool, and maintenance tracking tool), some services also offer your tenants additional capabilities which makes it an easier sell on your end when getting them to transition over (ie. their ability to report on-time rent payments to the credit bureaus; this can create an added incentive for making sure they pay that rent on time).

As you don’t technically have a business, nor really need one, there’s no reason to need a business account.

In the background.

I love the trees in the background of some lots. 

Your best bet is to just talk to both as quickly as possible and let them know the situation.If you have signed a lease, technically you are liable for the terms of that lease, even if you only paid a reservation deposit.