Hope this helps.

I have focused a lot on the Portland neighborhood over the past 7 years, flipping and holding houses down there.

(I know this may be a personal preference but help would be appreciated). 

New to real estate investing so any help/recommendations means more than you know :) Does anyone know what would be the easiest or most efficient way to go about getting a new quadplex built in the Greater Atlanta/surrounding area?

If they need help on that part I can help, we have a huge network of buyers that look to buy paper on a constant bases. 

For us it varies by market but in our primary market 15% plus a small monthly fee to help cover software costs etc if it's a lower gross property.That's full service, host doesn't have to worry about anything and can forget the property even exists if they want to.We do have tiered services where it's 10% (w/ no or lower monthly fee) if the owner wants us to only do one side of it (either manage bookings but not guests/cleanings/maintenance, or vice versa).25-30% used to be more normal but that's legacy pricing now, for a couple of reasons.1) Of course margins are much thinner for owners now that revenue has generally come down across the board from the peak, while home prices and interest rates have risen alongside that.2) Probably even more important, a simple supply/demand equation, particular to the case of increased supply. 

Additionally, my renovations are full guts anymore, which helps limit some competition and allows me to push the ARVs relative to other houses for sale in the neighborhoods.Admittedly, this doesn't necessarily create substantially more deal flow.  

They can give you a better feel for the neighborhoods, property conditions, and any particular quirks of the market.About properties sitting on the market for 30-60+ days, it could be due to market conditions, pricing, or the need for repairs.

PT caretakers who than help the PM to run things.

She's helped several investors from BiggerPockets!