When you look for a flat you can obtain regarding information from the Wohnungsgesellschaften (housing associations) or on the websites of real-estate companies. Many newspapers also publish housing advertisements. Before entering in a tenancy agreement, you should make yourself acquainted with all details: the height of the rent, the ancillary costs (particularly the cost of heating) and the security deposit, the term of the tenancy agreement (for a limited or unlimited period), and renovation obligations.
When you hold a housing voucher, the Welfare and Integration Office will assist you in the procurement of a flat. This voucher can be applied for with the Amt für Soziales und Integration (Welfare and Integration Office).
When you take over the flat, you have to sign a handing-over protocol. By your signature, you acknowledge the condition of the flat at the moment you have taken it over. At a later date, your landlord may make you responsible for any defects that have not been recorded. The landlord may request a deposit as security for the flat. When you move out of the flat and leave it in bad condition or you have not completely paid the rent, he will retain the security deposit. The Jobcenter or the Welfare and Integration Office may grant a loan for the security deposit of your flat. In addition to the rent for the rooms you live in, you have to pay ancillary costs for heating and water as well as fees for sewage and waste. These costs are accounted for once a year. Usually you pay a certain amount for the ancillary costs every month, and get a final bill at the end of the year.
When you move to another flat, you are obliged to inform the Bürgeramt (Citizens' Office) of the City about your new address within 14 days. You should give the Post (post service) a redirection order, so that your letters and parcels are automatically sent to your new address. You have to pay a fee for this service. You should also use the period covered by this redirection order to inform banks, insurance companies, agencies and offices, etc. about your move. Please be aware that it is common in Germany to comply with a termination notification period of three months when you intend to move to another flat.