Upgrade all the electrical and install new wireless water meters.The sprinkler system was there , but it wasn't active, and seller never paid the extra water fee for the sprinkler (hidden cost 175/quarter)  BUT I know these ahead of time, and I calculated that in CAM cost.  

It can still be an issue because if taxes go up to much then it can make CAM expenses to high for the tenants above the base rent.

One solution is to maintain control of these components and their maintenance by contract (as the landlord), but Bill them back to the tenant as a CAM charge. 

At that time I joined my local apartment assocation and went through their CAM ( Certified Apartment Manager) program.

I would suggest not using wifi cams.

We were presented with an LOI that was severely lacking in features in terms of buyer's contingencies, rent/CAM abatement credits, etc.

I cam here to make a comment and to plug my knowledge but instead, I learned something from @Andrew Postell and @Tim Miller@Trush A.

s (you can guess the acronym.Funny you mentioned cameras, I just installed my first two nest cam's, they're great!

I’m just confused because if I charge them CAM quarterly based on actual figures, what would be the point of the reconciliation?

There are many management software that can allow you to split CAM charges (utilities) amongst units just by inputting some numbers.I would not suggest separating sewer as you can open a bag of worms that can blow your budget.