The general understanding is that the homebuyer must intend to occupy the home for at least a year.The VA IRRRL (Interest Rate Reduction Refinance Loan) are used to refinance an existing VA loan at a lower interest rate. 

I've been looking in Greenville, SC and sadly i haven't been seeing any multi-family homes, but that doesn't mean they don't exist.

-Purchase price is $475k-expected gross rents 4440/month if all are LTR, more for STR-Current rents per month: 1 is $850, 2 are STR, one owner occupied-Fair market rents per month: $1020-1200 as LTR-We have an existing relationship with an excellent professional property manager-We have excellent credit and high salaried  W2 income (attorney)Thankful for any advice you can offer!

What kind of solutions exist for this?

Is there a software or information bank you would like to see that currently does not exist and would aid in your real estate journey? 

The only concern I have is its a popular market for STRs, and I am concerned the market is too saturated with STRs to make money.

I would probably do it unless I was keeping/maintaining the existing radiator or HVAC system.

I have not seen that in a retainer agreement, but it doesn't mean it doesn't exist.

When buying an existing self storage facility, some operators separate out the value of the business and retail from the actual facility to lower their property taxes.

Also are you tying in to existing Storm Drain and sanitary sewer or are you putting in septic tanks and leach fields?