Is it possible to sell or refinance one unit to pay the other off completely. 

Financing.  

you don't buy with long term / conventional financing and then refinance again into long term / conventional financing - many properties are too distressed to even qualify. so the "interest rate when purchasing" is irrelevant - the deal either works or it doesn't.

Thankfully they're pretty good at helping to find the very small loophole or advise on how to work with it in the simplest and easiest way possible.

I may be incorrect, but I thought that was not a possibility.

Will they be doing other types of work like getting through the financing, becoming the guarantor, finding the deals, crunching the numbers, doing the accounting, or are they just simply doing less work?

Wholesaling can definitely be very time consuming, but it is possible!

.✅ Secondly, good cause has a max cap on yearly rental increases at a certain margin above CPI or 10%, whichever is less.For those of you who own stabilized, high quality housing like we do, this shouldn’t be a problem.But instead of keeping rents flat because you are a nice person or increasing just a little bit, you could get yourself in trouble when it comes to funding future major repairs and capital expenditures.As long as you are increasing to what the market will bear, you will be in good shape.Also if you are looking at purchasing blighted, dilapidated housing with the intent of raising rents and financing improvements to the property, you will have to take this into consideration and buy accordingly and on in place rents not projected rents.On the implementation side, however that pans out, you might be able to get these necessary rent increases to finance repairs but you may need to go to housing court in order to get the green light but we are just not sure at this point and remains to be seen.✅ Thirdly, in regard to objectionable tenancy and nuisance caused by disruptive tenants, you will need to document these violations with undeniable evidence.Because police reports are not usually able to be procured due to disturbances like drug trafficking or domestic violence, you’ll need to take matters into your own hands on producing that documentation.I recommend getting security cameras installed in all common areas and outside your properties.I’ve used SimpliSafe security cameras but you’ll need to install WiFi service at your properties so that you can maintain recordings in the event of violations and add to your lease that any tampering with said cameras constitutes a lease violation as well.This is still developing and once we get further clarity, we will host a round table with legal experts on how to best protect our properties and residents.

Foreclosure and possibly a deficiency judgment against you - if you can get them to take a deed in lieu then I would do that  

I’d think long and hard about this and possibly set up financial parameters for who is responsible.