Better to lock in the price now and refinance later.

We turned a SFH into an up/down duplex by framing in a locked door at bottom of stairs and adding a kitchen to the lower unit.

Is there a life lock type of alert for properties?

However if it is a smart deadbolt and a normal lock on the door handle they will need that key bc they will inevitably lock that one on accident and lock themselves out. 

I have a great locked in rate and want to use it to my advantage - without doing a traditional sale.Has anyone - or is it possible - to sell my own house utilizing the wrap around mortgage principles?

I have a duplex with one meter and I use a Sense (https://sense.com/) device to monitor the total KWH that the upstairs unit is using I then take the electric bill and split the bill up based on the amount of power drawn by the upstairs unit vs the total usage.

We are changing the locks and im crossing my fingers it goes smoothly. 

They will normally charge you for desk space, using their printer, support from them and their office staff, Etc....Then there are MLS fees, Lock Box fees, Continuing Education costs, and the basic costs of running your own business.

@James Hamling thoughts on supply vs. demand and rate lock-in? 

I learned how to handle minor house projects while husband was working, saved tons off hiring people for minor but labor intensive projects like painting, window screening, changing locks, etc.