For any of the utulity service connection to your house or apartment you need to have your resident permit and passport copy and write a request letter to the general office of the service in your area.

Electric Services (Elektrik)
Electric bills are issued every month. Payment is by automatic bank withdrawal or at banks listed on monthly bill. Overdue bills are paid at your district Electric Department Central Office There is a significant late charge for overdue bills.
Electric Problems: 186
Beyoglu Central Office/Taksim: (0212) 237-2350
Telephone (Telefon)
Home phone service is much more reliable than it used to be and much easier to have installed. You can call 161 (or a Turkish speaking friend) give your address and passport details over the phone. You will be given an appointment for installation and your new telephone number in few minutes. Be in the house on the appointment day with your resident permit and passport copy. They may not be on time but they will come. Try to fix it to morning or afternoon.
Out-of-order Telephones (European side): 121
Water (Su)
Water bills are issued every two months. They can be paid through automatic bank withdrawal or at the banks listed on the bill or at your district's Water Department General Office (ISKI Genel Müdürlüðü). Water problems: 185 ISKI (Water): (0212) 588-3800
Cable TV (Kablolu TV)
Cable TV service can be obtained from your district's Telephone Department General Office with a written request for service. Bills are issued monthly and can be paid by automatic bank withdrawal or at the banks listed on the bill. Overdue bills are paid at the telephone office.
Natural Gas (Dogalgaz)
Most homes have been equipped with natural gas for heating. Sometimes, the cost of gas is included in your monthly general building charges. If your gas is handled separately from the general apartment, your monthly bills are paid through automatic bank withdrawal or through payment at the banks listed on the bill. Some ovens and bathroom water heating units used LPG gas tubes. These are sold on trucks that rove the neighbourhoods, often playing a catchy jingle to advertise their presence. They can also be summoned by phone. With a nice tip, they will happily shoulder the tubes, even up six flights of stairs! Dogalgaz (Natural Gas): 187