@Ned CareyThat is precisely the problem that I was having.

I have done a rough expenses chart and figure it will be around $2270 a month in expenses.

Posted a scatter chart of price/br and price/sq ft in my area. 

When I need to have locks changed he simply changes the cylinders to the next combination on the chart.

Cities like NYC and SF have intrinsic qualities that just can't be found in the surrounding burbs.Will there be another leg up on this chart by 2030?

I thought it was just as precise targeting as you could possible get, spent at least 10 just doing all the research

I would not want to get caught up in that, for precisely the reason you mention.

I really appreciate Tyrone's posts in charting his experience.

The cost of a new battery can be almost as much as the tool you bought is brand new.Miter Saw (great for molding and precise cuts)Battery Circular Saw (useful for flooring)Oscillating Saw (helpful for getting flooring under door jams and odd cuts)Shop-VacJig Saw (for flooring and intricate cuts)PencilsSpare blades for these tools, don't want to have to run out mid projectLots of white paintable caulk and a couple sponges for wiping excess off5 in 1 tool (cheap and great to have)Hand sanders, sometimes the electric/battery ones are too much for the jobStep stool (beats lugging around a ladder)Quality painting supplies like Wooster (sash brush, roller pads, roller and pole, plastic to protect the flooring)

This is precisely the reason why so many real estate investors go into lending.