IF you bought the property with cash, you typically have to wait 6 months from the original purchase date.

@Ellis Moyewe really don't know a lot about this situation since there aren't many details in your post... but i don't think this makes any sense for anyone involved here...if it's a flip that's not selling, refinancing may not solve your problem and allow you to pay back the HML in fulland typically a sub to buyer wants a low interest rate... and if you refinance now you won't be getting a low interest rate, you'll just be getting whatever the market offers.and finally.... the vast majority of loans are NOT assumable. 

Purchase price: $178,000 Cash invested: $10,000 primary home own use has an Airbnb/ short term rental 5 months out the year/sometime this year will try BRRRR

Which size of home is typically perform best on a cost benefit analysis?

This will make it a lot easier to manage, will cost you less than buying on the market and typically you can get 1:1 rent returns.

Sell as a rental property and 1031 into your future retirement home/current investment.2.

Since acquiring a four-unit property on the Northwest side, my bi-monthly bill has typically been around $500.

Quote from @Zachary Deal: @Joshua Kavadi As @Zachary Deal and Chris said, you'll need to know that not every deal is a home run or even a triple.

Investment Info:

Single-family residence buy & hold investment.

Purchase price: $615,000

Cash invested: $630,000

Sale price: $1,500,000

New Construction

State tax regulations are typically able to be researched by any CPA worth his/her salt.