Along with appreciation the rents have sky rocketed as well.  

Even if you owned every unit on the block, peeps will only pay what that location dictates or your vacancies would sky rocket if you went way above for example. 

It's elementry quick flips, there is no rocket science here, in fact, much easier to flip problems to rehabbers than to buy, repair and "retail".

It's not rocket science.

Rocket Dollar is another local company that does give checkbook control, and has simpler billing.

my area is the highest appreciation because of tech jobs in the last 30 years. in next 10 years the defining moment would still be white collar job creation, as cost is more expensive, it's clear that the trend to grow is more visible in south and some part of midwest. it's really not rocket science to understand appreciation. 

Plus houses are not rocket ships. 

Although @Bill Gulley is in the bread basket.. but usually us WEst coast folks are in the appreciation camp and most mid westerners are in the cash flow.. because cash flow here on the west coast is not that exciting generally and appreciation does not happen in the mid west generally.However the statement by @David Dachtera  about appreciation is gambling I don't by that one bit.. you don't have to be a rocket scientist to explore the US markets and see where markets may move. let me give you a couple1.

You won't likely get high cash flow day 1 from CA, but boy the capital gains and rent growth sure are nice ... and if you do it right then those gains are NOT based on speculation that the market will shoot up like a rocket forever.

It's not rocket science!