The age of the HVAC should have been disclosed or obvious when you walked through (ie you could see it was older). 

Also, find a loan officer who understands your age and life stage and who will truly put your interests first and help you get a financial strategy that will set you up for success. 

His storyAt a young age -and despite having several siblings- he felt impressed that he was going to need to take care of his parents when they were older, so he went forward with that mission in mind.

If Federal government has a magic "flip-it" wand can't they wave to, IDK, make me age in reverse?

Regarding multifamily insurance it varies greatly the price depending on the number of doors, age, and location.

I got started when I was your age in college.

Just like anything it comes down to doing your due diligence and inspecting the property before you buy it so you are aware of the age of the capex and all the mechanicals. 

You should answer with, anyone over the age of 18 must apply and be approved to be formally added to the lease and permitted to move in.

As far as friends go, when you're young, that generally means the parents of friends as the tendency is they will have money to invest where friends in your age group are less likely to have investable funds. 

It's amazing to see the next generation take an interest in building wealth and understanding the power of smart investments from such a young age.