You can divide bills into following parts:
1.Utility Bills for cold water and electricity. Payment will be done according to the counter. On average you will pay around 25 euros monthly for an 70 m2 apartment. If you do not live in the apartment you will pay fixed 5 euros montly.
2.Maintenance of the complex and its territory. Paid once in a year ranging from 50 to 200 euros depending on the apartment.
In total the maintenance of the apartment will cost you 200-300 euros per a year.
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