I assume you mean a permanent transfer and not just a rental. It is similar to any real estate sale. The agent's fee and any costs relating to the seller's paying off a loan on the property come out of the sale price received and are thus paid by the seller unless he factors such costs into the sale price. Other closing costs (e.g., recording fees, transfer taxes, title insurance) are subject to negotiation although often there is a presumption that the buyer will pay them unless negotiated otherwise. Also, in the timeshare market, agents often charge a minimal flat fee (like $1500) in lieu of or in addition to some percentage of the total sale price.