A handy search bar in the upper right makes it easy to find previous discussions, blogs, podcasts, and other resources.

There is no easy answer so you'll have to decide which path will give you the least regret.  

It may be easy to rectify, maybe not, depends on your jurisdiction, the issues involved and the City's stance. 

This isn't easy to measure directly.

There is a big push to get the easy cases to get the stats up these days.

It very well could become a large enough investment to be worthwhile, also solving for "unexpected emergencies ", for the most part and would an easy self management situation if you were to live onsite in one of your connected townhomes.

Commercial valuation is easy.  

Tons of old homes that cost less than replacement value.. resales not easy lots of differed maintenance on them etc etc.. 

A handy search bar in the upper right makes it easy to find previous discussions, blogs, podcasts, and other resources.

Both these 2 are not easy to do, and typically take expertise, experience and or capital.