It does happen that an agent can represent both sides of the transaction, but they have to make this aware to both the seller, and the buyer to make the agreement fair for all parties.

I did sign up for your video course, so I'll be watching those videos.

I am looking to buy a second multi-family home in the same area.  

An appraiser is a third party that is suppose to give a fair and honest opinion of market value. 

Aviation related videos... 

I came across a local developer who seemed to have a good reputation and a track record buying small to medium multi-families, doing some work refurbishing and repositioning the properties and flipping them in a couple of years.  

The good part is there is hardwood underneath.

I was either leaning towards a single family at first or multi-family

Have you considered multi-family instead?

In the long term, I would like to eventually transition into owning both SFRs as well as multi-family properties.