An investor would not want to invest in an area or neighborhood where the value of their investment would decrease over the years, but it is also very difficult to understand what areas/type of living will be popular in five or eight years, let alone fifteen or twenty.

Not to the extent of WA, CO or CA might experience but perhaps a small decrease or period of stagnation.

But if it's done effectively and efficiently, then your cost per lead will decrease tremendously.

Realize if you hold longer, the total return will likely increase, but the annualized return will likely decrease.

Bonjour, I have a limited experience with french loans but my understanding is that you can easily re-negotiate the terms of your loan with your bank such as adjusting interest rates based on current market, increasing or decreasing your monthly payment or number of years.

This is fully forgivable after 15 years of the loan, starting at year 11 and decreasing every year by 20%, but as far as the numbers, how does it work?

I feel like the returns on single family renting are decreasing. 

Regarding the estimate of $5870 I know this is just an estimate, but how likely is this number going to increase/decrease? 

In that post I let the other OP, who posted a very similar question, know that if you add an ADU to a 2-4 unit, or multiple ADUs to a SFR, the property can no longer be financed by Agency backed 30YF good loans, and talked a bit about how that can drastically decrease the market value of the property.

As for stagnant/decreasing wages; I don't see that as an issue.