Buying a house using private/hard money seems doable, same with rehabbing and renting.

They had been signing lease extension with the previous owner for several years.

Purchase price: $65,000 Cash invested: $29,000 Extensive rehab in Underhill Park area What made you interested in investing in this type of deal?

Again for the time involved it is extensive.

The best bet for housing interns and others over the short term is helping them find vetted rooms for rent in private homes or as part of a sublet.

You can also consider partnering with another investor, or finding a private money lender to help you acquire the funds necessary to purchase this new property should you not want to refinance your current living property. 

I am a syndicator and help other investors source financing (private and institutional) for deals. 

Because we get no benefits, we have to pay for private healthcare insurance, and save for retirement out of our income with no matching funds from an employer.  

You could lose everything.If you can find one, and you can if you ask enough people, find a private lender to make a loan to you.

@Shay Singh probably the easiest and most passive way to earn the 4K a month would be to lend it out as a private money lender by buying notes.