A laufhaus is a building with apartments that sex workers can rent and use as their base of operation.
[1] Unlike other forms of brothels, laufhauses do not require clients to pay an entry fee.
[3] Women who work in laufhauses make their money by offering various types of sexual services to clients.
[4] Laufhaus owners make money by renting out the rooms to sex workers.
While in most types of brothels, the women have to give a percentage of their earnings to the owner, in laufhauses they can keep all of the money for themselves, other than paying the rent.