Typically, investors will put aside more money in CapEx Reserves to offset the rising YoY costs of these major ticket items. 

Should I only be looking in neighborhoods on the rise, where the rent and property value will definitely go up?

In this particular case it could be that rents could be raised almost immediately to improve returns, or they are expected to rise in the future as the city grows. 

You won't live for "free" with a multi-family house-hack in the NYC Metro area, but if you can lower your monthly housing expense while building equity, benefiting from rising rental income (over time, rents tend to rise), tax advantages, and invaluable RE experience while living in the property that you own and have tenants in, I think it's a no-brainer.As far as location, it depends on your needs, like work commute, proximity to public transit, area amenities that are important to you, etc. 

Conversly with less agents competing, average commissions rise during recessions.

How can a stock's revenue fall by 30% - 50% and the valuations still rise? 

In all my years the operating costs of a property have NEVER decreased & much higher property taxes are inevitable so unless you're in it to lose money, or bought into strict rent controlled housing, rents will have to rise. 

You are rising and falling with the neighborhood.Its typical to start with the ARV (after repair value) and back into the allowance for repairs.

I think alot of retail stores were already struggling with the rise of internet stores.

I will check temperature and I will also be checking the amp load on it.