If he is ok with not owning the properties  The easiest thing to do is buy him a house. 

Are there any particular investing strategies or methods you’re leaning toward?

I am sure there are people who did it, even on this forum I saw posts by multiple users who claimed that they were successful doing this method.

You could do a full MTR during the period you're gone, but for me the best and easiest way to go would be to just rent the other rooms in the house as a LTR. 

I am actually doing a flip right now and hard money lender isn't the easiest to give us a loan for the rehab (draws verse pulling all at once, which is normal).

Using this method, we will have our home paid off in about 2 more years AND will have a massive HELOC we can use to scale even more. wht are you going to do after the mortgage is paid-off ?

Also, not very easy to use typical methods of valuation like comparable sales - there is no public tax assessor's website that you can just freely grab this from. 

I would imagine getting the cash out is about the easiest part, having the check in hand is the exciting part, and buying a house is the nerve-wracking part. i watch videos at work and talk to my clients all the time about real estate.

(G) Acceptable forms of payment of Rent (including Additional Rent) are ___ personal check, ___ cashier’s check, ___ bank check, ___ money order, and ___ the following online/ACH payment methods ____________________.

Local Investment StrategiesHouse Hacking: Given the affordable entry prices, Albuquerque can be a great place to start house hacking, especially near the university areas.BRRRR: For those familiar with the Buy, Rehab, Rent, Refinance, Repeat method, there are opportunities in Albuquerque to purchase under-valued properties, especially in areas undergoing gentrification.Airbnb/Short Term Rentals: As previously mentioned, the city's rich cultural appeal can make certain properties lucrative for short-term rentals.