To over-simplify, if lending were as available as potential home-buyers would like it to be home prices would launch into inter-stellar space - well beyond the previously elevated values we saw before the crash - purely due to to supply and demand: supply is restricted as is growth in supply while demand is increasing exponentially. 

The ones we have used the most are Schlage models which do not power the deadbolt as they have longer battery life and their are less alignment issues as buildings and doors shift with the seasons.  

He gets deals purely through referrals.  

I know they all run on batteries so how often do you have to change the batteries? 

(my response is long... but pure of passion and desire to get to financial freedom) Thank you David @David Thompsoni, I have reviewed your link...

@Dave Foster I thought it was pure genius !

Oh I see, this will not be a pure investment, but trying to get the rental to cover some of your costs. 

Always satin or semi gloss, pure white trim in semi gloss.

Do you want to use it as your own vacation spot or is it purely an investment.

Mine has a small battery that takes a few hours to charge and gets about 20 minutes of flying time.