The middle-aged adult with 4-5 properties, I would recommend they start to prune their investments. 

A lot of expert level investors end up going that way at some point (retirement age, bored of flipping, tired of managing rentals, etc.). 

QUESTION #14: WHAT AGE OF PROPERTIES DO YOU INVEST IN?

My oldest daughter, at age 18, moved to Berkeley with her best friend, age 20.

. - Strict local regulations can also sometimes increase compliance-related maintenance costsCost-saving strategies I've seen help:- Preventative maintenance programs can help reduce overall costs obviously - Some investors report success with in-house maintenance teams for larger portfolios- Energy-efficient upgrades can help reduce utility costs in the long runYour specific costs will depend on factors like the age and condition of your properties, your management style, and the specific neighborhoods you're invested in, but hope this helps!

I would not worry about a homes age.

That is too risky, especially in this day and age of lawsuits."  

How old is the property or the age of the thing you are talking about? 

In addition a lot of them had aged out as landlords and just did not want to deal with rentals anymore and wanted to just clip coupons at a set rate of return.

AntI love this update!!