Always negotiable but typical purchase is 3% but can scale down for big boy deals. On a lease to a credit tenant you're looking at first month rent + 3% total rent in initial term. A broker may choose to take his/her commission as roll up equity if the LL chooses, in which case the broker would share in the ability of the tenant to fulfill its obligations. Otherwise, on a straight cash commission deal, the broker either gets paid at close or at lease commencement. The brokers services are rendered by handling calls, marketing the property, and securing an end user for a parcel. The LL is responsible for due diligence and ultimately the performance of the property, not the broker.