Many landlords who rent to foreigners ask their tenants pay them directly for the utilities. Why? Because they can make a killing! Apart from the standard building utilities (typically 500 CZK/month/person) which are paid along with the rent, it is much better for your wallet when the utilities are in your name. This way you can avoid the notorious landlord trick of overcharging for utilities. That being said, some people do not want the hassle of having the utilities in their name, so be sure to watch out for rental ads where the rent is reasonable, yet the utilities are outrageous (6,000 Kč and up for two people).