I do this at least quarterly for some of my clients and they like being able to see the profit and loss reports. 

Second, you don't want to operate at a net loss, it's money out of your pocket every month and essentially negates your equity gains over time.

My goal while I'm working is to always report a break even or loss until I retire.

I am not a rookie investor, and probably have taken enough Losses since 2001 to make most of you quit. 

Profit and loss will be a guessing game. 

Sell at a slight loss.

It's ok to sell properties at a loss (you get the downpayment back to repurpose into something better).If you have four or more properties, this is what I would do (I just posted part of this as an answer to someone and thought it would make a good post):1.

This kind of investing is usually short sighted and focused only on immediate returns without taking into considering long term vision and investment.Excellent point about trying to put Class C tenants into Class A properties and vice versa.The first one will create lots of vacancy, deferred maintenance, loss of rental income, increase in evictions etc. 

You will have to gather more accurate operating costs (vacancy loss, taxes, utilities, insurance, mgmt fees, maintenance, HOA) to best determine potential future performance.

If I had to pay my cleaners on top of the loss income it would impact even more as my cleaning fees range from $100 to $400 depending on the property.