In our 'day job' business of remodeling we have stayed just a partnership with an LLC.

Is the mid term rental business that you have a 'rental arbitrage' business?

Lau, generally if you are financing with a commercial lender- we lend for business purpose only and a rental property would fall under that category.

If millenial homeowners can't even change their home's air filters, or snake a toilet, or change the oil in their car, that's guaranteed future business for HVAC companies, plumbers, mechanics, and those places all need a place to conduct business in.The commercial mortgage pricing software I use has somewhere around 50 different asset classes in it.

@Jacob HavlovickBigger Pockets is a great place to find a real estate tax accountant.A good real estate accountant can save you thousands of dollars by leveraging entity selection and formation, tax deductions, cost segregations, bonus depreciation and tax planning.I recommend finding an accountant who specializes in real estate taxation, business taxation, financial planning and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

My goal is to wholesale some properties single and multifamily to build some capital while fixing my personal credit and building my business credit.

Try talking to local banks who want to do business with you.

What aspect of their business, the property managment software or investment management software.

Thats why you see lack of ADA compliance in small businesses.  

Business justification of LLC-B --> This is can be a problem.