Does anyone have a recommendation for a company + an idea of ballpark cost I should look for, for a 1500 sq foot, 3 bedroom single-level house to do HEPA vac + wet wipe?

I’d love to get some ideas on how to get equity out of an investment property.  

If you're looking for a long term business associate, in my personal opinion it is best to team up with someone that you want to make rich.

do some odd jobs--plenty of contractors are looking for help...start a lawn care business (extremely popular right now), work for a company that's involved with real estate such as a property manager, title company or hard money company (F-Street is often hiring) or a real estate investment company? 

Business and investing is very different.The interest is part of your expenses.

The detailed cost segregation study report can help businesses more effectively manage their assets.If assets don’t fall into one of the examples above, there are options such as a 1031 exchange, gifting them through a trust or other advanced tax strategies to avoid depreciation recapture.

If you aren't familiar with them, check out Cold Water Gardens in (North)Milton for ideas on layout and competition. 

Are there any other house hack ideas or thoughts on what to do with the basement for rent/forced appreciation?

Normally a PM should get paid more.So the result is you get mostly PM's who struggle to survive and will pick up any business they can.

It is a good idea, but each jurisdiction needs to be able to support it which is not yet the case.