For example if you can only afford a set monthly payment based on your income and if the interest rate on a $400,000 dollar house goes from 3% to 4% it decreases the price a buyer can spend on a house to get the same monthly mortgage rate, to about $355,000.

"Paying down your mortgage" means that your rate of return decreases over time (effective returns of having a place to live, divided by the capital tied up) .

If you are considering a property targeted towards families and the area is aging, you will likely find demand decreasing.

Apparently they also install a drip water system so you basically have very little maintenance/gardening expenses on top of the water savings.I guess as a landlord it would be a no brainer to increase cash flow, with zero expenditure.However if you were to sell the property at a later time, do you think it would decrease it's appeal to buyers?

Will they increase, decrease or stay the same?

The value of your deals (based on % of property value and level of profit) has been steadily decreasing through out the flips.

This is, primarily, because of the decreased price volatility as well as the inability of the investor to make rash decisions by quickly liquidating their portfolio during a market downturn (behavioral economics 101).

Perhaps a plumber can help you to find the source of water, hard to believe it's all from outside humidity but keep some windows open a crack and determine if the humidity decreases.

Will buying 1 point decrease my interest rate by 0.25?

Other good news is that foreclosure inventories have decreased by 0.3%.