I’m interested in the same solution to open the door for prospective tenants without being there and without depending on an agent.Do you know any company that does these bluetooth devices? 

I am waiting until I am in the town that I am moving to actually pull the trigger on my first deal but I am trying to evaluate the market and find deals now.

•Where can I find/pull permits for a Residential Property?

If/when the home appraises for $150k, refinance 70% of that $150k thus pulling my initial $105k out and leaving $45k of forced equity still in the deal while still cash flowing $200/month. 

Pull delinquent tax lists from your county and either find their numbers and call them, or knock on their doors.

@Joshua Mayo keep me updated on the ease of pulling the cash off the cards and the associated fees.

When my current properties reach 60% equity, I plan to refinance and pull cash out, and use the proceeds to buy the next property.  

Jesse,If you contact a local REALTOR they will have access to RPR (REALTOR Property Resources) this system has a vast amount of information and most will pull it pretty quickly for you.

Pull the trigger, re adjust and keep trucking.

Or, perhaps it is one of those sought after situations where you can spend 150k over 20 units and raise the rent based on the improvements, and perhaps pull out you equity for the next deal.