I want to know whether it would work legally for me to buy a home and occupy it for 6 months and then relocate for the maximum time of two years and then return to the property a my primary residence. 

If its owner occupied I would do a 5 year balloon (amortized 15-30 years). 

Hi Jaycee,The owners occupy two of the 5 units. 

Quote from @AJ Satcher: I am currently house hacking with an upper/lower setup - I occupy the upper.

All units are occupied.

Not sure about MTRs.My general conclusion was that it is tough to do business in the town if your goal is to buy property as pure rentals out the gates and no intention to occupy.

Buying two rentals in one year can be a challenge, but there are creative ways to make it happen:House Hack the Duplex: Buy the owner-occupied duplex first.

If you're interested, his hobbies include history of mankind, culture and classical prose of China and Japan. 

Gross rent multiplier (GRM) A method that divides the purchase price by the gross annual rents when the property is 100% occupied.

It is pretty easy to keep it fully occupied but it does mean I turn away a ton of people who want a lease that doesn't quite fit my requirements.