I run an letting agency (estate agency) I put the property's on my low ranking website. The content is not scraped, but re-published to several property portals

I run an letting agency (estate agency) I put the property's on my low ranking website. The content is not scraped, but re-published to several property portals, some big names. Who'm gets penalised? The higher ranking, more frequently indexed property portals or my local website.