Portland Loopnet vs Costar vs MLS vs RMLS

[John Laney]

Hello,

I am a single family investor who is new at the multi-fam/commercial game.  And trying to get my mind wrapped around the sources for single-family and multifamily listing services in the Portland area. 

I started corresponding with one commercial realtor (not signed any exclusivity agreement), but got frustrated as I was able to pull more and better listings off loopnet and redfin than he was able to give me. 

So,  I reached out to a different realtor to see if he had a better source of listings. Unfortunately, this realtor sends me listing where half of the listing have already been sold?!?

Is this normal to have such a difference in realtors?

If you could help me understand what is the source that loopnet, Costar, MLS and any other listing service pulls from I would be grateful.