Welcome to the BP site @Allana Alexthere are plenty of educational information here: Videos, Podcasts, and numerous guides. 

If the unit has these:Assume replacement every 10 years:Water heater - $900Refrigerator - $900Range - $900Dishwasher - $600Clothes washer/dryer - $1000 combinedEvery 15 years:Furnace - $2900Central air - $29003 BR SFR Flat Roof - $2100 + $300 per 3 years to coat itI annually plan for an additional $1,500 of miscellaneous maintenance expenses and $800 for capital improvements.You could probably use something like this to estimate your per-unit costs as some units might not have all the same features.  

I have read about this "net passive loss allowance" in numerous articles and it has never made sense until now.

Hi Brian, You have numerous options and resources to choose from at your disposal.

Sure, location, cash flow potential etc. but numerically, is there a sweet spot?

I am sure we will be conversing on numerous topics in the near future.

I was able to cut the monthly alarm bill from $85 per month to $25  (with more features too!)

I think the main thing is for investors to have some sort of numerical value, regardless of what the seller calls it, to evaluate property. 

After that there is usually a featured speaker on an important topic.

We have used big banks and the features with the banking apps are great and timely.With the smaller banks you have more of a personal relationship with the banker.