Im old school...my cpa is in the building next door and I like doing business face to face.

Get on next door, FB, etc. and post within your community to see who other home owners are referring.

How many doors do you need to hit your target?  

The first warning I always do written (via email), second warning is an official letter on their door saying they're violating their lease to allow other residents the right of enjoyment (if you put this in your lease).

it will be a corporate/wellness retreat/short term rental destinationI need land that is close to the Action, but not too close, and preferably comes with two single family doors already built, so I can take advantage of Fannie Mae owner occupied loan and develop the rest of the land on my own and with private funding.Is Columbus a good market for this strategy?

I know of some folks in KC and Memphis doing new builds like this, but they are doing it within a much larger and long-term project that includes upwards of 300-500 units built over the course of 5-10 years.Assuming you're looking in Columbia, do you have a "B+/C" neighborhood in mind?

While owning property is good you can find an agent that brings value to you with out them owning 10 doors. 

You don't need to be larger than life, driving flashy cars, or using your looks to make a sale.

It’s on MN (out of state to me.) and I had to get a pair of garage door springs replaced.

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.