There are a lot of regulations and requirements for it.  

What are our refinance options in today's high interest rates environment?

The difference between that rate and the IRR on the syndication is your net return.Doubling your investment is an aggressive assumption in the current environment with high borrowing costs and declining values.

.- They likely have "boots on the ground" experience and knowledge of local labor costs, operational costs, rent potential, regulations, and property histories.- They can be a great check and sounding board on the financial projections and value add analyses that you do.Do you agree with this?

If you don't have that type of clause in your current lease, you'll want to add one for the future...in the meantime, consider telling the tenant that the space is not habitable until the problem is fixed, and that they are not required to pay rent for the period that the space is not habitable--during which time, they can stay in a hotel/air bnb etc. ...but, it also depends on your local laws/regulations on the issue--some areas might require you to provide a hotel; at the end of the day, you have to follow whatever the law says....Good luck!  

And almost everyone will be looking for safety in the form of shelter, clothes, and environment.

It helps to ensure that the project meets the necessary standards and regulations: A scope of work should include any necessary permits or approvals that are required for the project, as well as any relevant standards or regulations that must be followed.

The main reason I am asking is that the funds sitting in the Roth cash accounts are not working for us - particularly in this high inflation environment.

Best to look up for the regulations for your state. 

There are some regulations and stipulations around FHA loans for 3-4 units (self sufficiency) but this doesn't increase the down payment and make it a commercial loan.