No, it's not a good idea, but it's possible to do correctly if you don't rush into it.

Quote from @Sakib Khan: Hey everyone,I’ve been toying with the idea of jumping into the world of rental property investing, and I thought this would be the perfect place to ask for advice.

The Idea is to create a new real estate asset class - the Room Condo. 

I have no idea what you mean in regard to lending to my cousin, but it doesn't matter. 

There are many many threads in these forums about it, some of the information may be a bit dated, but the general idea is the same.

This was a brilliant idea, I didnt get to try it, but certainly will in the future. 

That sounds like a good idea.

Which of these ideas would you try first to grow your deal flow or funding network?

There are plenty of websites that can give you a good idea of property values in your area.

Another idea could be to see if the HVAC system can be adjusted or modified to better separate the airflow between the units.