Estate agents often have the most attractive accommodation, as many landlords do not wish to spend time looking for and contracting with tenants. In many cases, you never see the landlord as the agent handles all administrative tasks.
Most estate agents require the payment of a registration fee of around CHF 50, which is normally valid for 3 months. If the agent is successful, another commission is due. This varies between agents, but is usually equal to one month’s rent and should be specified by the agent in advance.