However, I think the very modern styles causes the kitchen to lose some functionality which can be undesirable when renting...

The rest of the work would be just to bring functional items up to date (updating the kitchen, for example).

CF is a function of many things, one of the most notable - what you pay for the asset :)Good luck!

I'm not an economist....but suspect it is a function of supply of units to rent vs. demand.  

That is what RE Brokers do, facilitate the transfer of property rights, if anyone does anything to effect the same exchange, then the value can be seen as being close to what is fair and equitable for that function.

There's much easier search functions without the extra criteria that doesnt pertain to us.

The premise of depreciation is that, for a SFH, after 27.5 years the structure will be functionality obsolete and worth $0.  

Rotate it clockwise by 1/4 turn.

Look, there is no doubt that these campaigns are successful in certain markets or with a 5 figure/month marketing budget and a fully functioning call center to handle the inbound call volume. 

I'm not an appraiser but this is my understanding and there are other factors like age, upgrades, functionality, GLA (gross living area) and many more features.