That couldn't be further from the truth!

Per door does not change the numbers but makes it easier to do napkin math and for people to grasp.

What are some tips to estimate what these expenses will be 6M, 1yr, 3yrs post purchase?

If there are any specific tips specifically trying to rent by the room house hack in a college, like things to look for in the house, how to estimate the correct rent, or anything similar to that i'd really appreciate the advice. 

Quote from @Bhushan Shinkre: Few corrections, tenant simply decided not to pay rent and took further action of asking for refund of all prior payments (legally made via Baselane), which Baselane paid out no questions asked.

Please study engineering and you’ll have more of a grasp of why measuring amperes (electricity) or volume (water or natural gas) lends itself to reasonable precision.  

Could you share some tips on how to find the builders or is there any platform that I can use to reach out to multiple builders to get quote once the architectural drawings are finalized?

We try to go 1 step further than the national builders we are competing with.

Welcome to the community and be ready for a huge amount of information at your finger tips.

This is still a good investment in my opinion.Feel free to reach out if you have any further questions or need additional clarification!