Off market deal etiquette question

[Joe Meares]

Hi guys and gals,

I'm looking into an off market deal that was brought to me by a colleague, and I'm wondering what the etiquette is around getting your agent involved. 

From what I've heard, you can get these deals done without involving any agents, and avoid commissions. 

However my agent has been very helpful to me in the past, so I don't want to offend them if this is something that is a big no-no in the real estate community. I frankly just don't know what is considered acceptable or looked down upon in this type of situation. 

Any advice you could offer would be greatly appreciated. 

Thanks!

Joe