I also replace all the supply lines to pex and redid the drains.

If you are simply looking to run power and plumbing to a location in the basement that doesnt have it in order to set yourself up for washer / dryer in a new location, it shouldn't be mad money-- but there are many variables.

Try to start moving your units away from any plastic parts on the supply side of your water (other than PEX).

I'm sure it's variable by exact location there just like it is here, but for a frame of reference, most people pay between 2.1-2.8% of their appraised value, which tends to be quite a bit lower than their actual value. 

With such little supply and great rates for buyers, the competition is at record levels and bidding wars kill cash flow.

The lock has a low battery warning indicator in the app which gives you plenty of time to change the batteries.They last about 4 months, but we have decided to just automatically change them every 3 months.We are using Kwikset Smartkey standard deadbolts for the other doors and the supply closet.

Later he asked for some supplies like a notebook.  

We'll be managing the property ourselves (following all of the advice supplied on this website and from friends who have managed their own property for a few years).

Does anyone supply tenant's with an "owner's manual" for the house they are renting?  

So, the supply of housing suddenly all but stopped growing.The demand for housing, however, remained on it's existing course with only a slight dampening due to the dearth of lending and rentals.