You'd want to consult with an attorney for the legality of such things in your area and also speak with a broker on the rules of self-advertising while hanging your license with them.

Legally speaking i dont think they can lend just anywhere so you need to find a local lender for your deal or at least one who can lend for deals there.If your deal is in another country make sure you consult a lawyer about the legal requirements of wherever you are investing as an out of country investor (and your home country). 

We've put a lot of work into this house and raised the value (the market helped significantly too) and always anticipated holding onto it as another rental when we were ready to upgrade.My background is 12 years in Enterprise software consulting and presales (all for the same company, no less). 

I did some consulting for a friend on a property that was bought from a huge online auction company. 

basically two ways to proceed. first is ignore the rental situation. throw his stuff on the curb, and hope he goes away. hopefully she does not get sued for self help eviction. second is to deliver 3 day pay or quit alongside 30 day notice to vacate and follow formal eviction procedures. benefit to this is its the legal way to go, but it takes longer and can be uncomfortable.she should consult her local landlord tenant laws to understand her decisions though

Basically he is a consultant to law firms.

I'd love to grow this real estate investing side hustle to the point that I could scale back my web development role to part time or only on a consulting basis (I really enjoy the work so I don't want to quit outright, but I have so many other side projects I'd love to do!

All I do is consult what a good price is and I will let them do what they want.

Can someone evaluate my situation, or recommend a consultant to do so?

I would consult a CPA, but your maximum tax benefits lie in the ability to claim status as a real estate professional, which you won't be able to do while continuing in your job but she could if she was dedicated to working in real estate (agent, PM, investor, etc.). 2.