Some won't allow you to alter them though.

I think that you’ll find that the skills you’ve learned will translate really well.

I have been listening to Ken McElroy audio books, he talks about real estate investing and why MULTIFAMILY investing is the best investment, I STILL have problems to translate his meaning of the words "Multi family apartments" to swedish/what that would mean in my language, as far as I know, he have been talking about 1:st floor and 2:d floor when talking about renters, for example: that old people rather want to live on the 1:st floor instead of the 2:nd floor, he never talks about 3:d or 4:th floor for example, so that means it's only max 2 floor on the buildings he talks about?

Adding a tread to compensate for the altered geometry doesn't sound  "aesthetically pleasing".

However, the 20% increase in price does not translate over to a 20% increase in income.

That translates to $40 a year worth of interest or $3.33 per month or $0.11 per day.

Although your lease probably doesn't specifically address your tenant having an alarm it probably does state that your tenant is not allowed to make any alterations to the property without prior written authorization from you the landlord or owner. 

I am not the one making forecasts, the math is, I am just it's voice, a translator let's say. yeah, that feels most accurate, a data-translator. 

There are more tenants than there are LL, which translates to more votes.

Although I am based in Canada so everything might not translate exactly to US.