Berlin rents seen stagnating with rent increases elsewhere In the capital, the rent cap is slowing price increases for existing flats. Rentals in new buildings continue to rise. Ulrich Paul, 28.1.2021 - 11:00 Uhr Artikel anhören Photo: Benjamin PritzkuleitChoriner Straße in Mitte. Berlin - While the corona pandemic likely won't halt rent increases in most major German cities this year, Berlin may see a decrease - at least according to property site Immowelt's latest forecast for cities with more than 500,000 inhabitants. According to the forecast, the asking rent for existing flats – the prices in apartment listings – will continue to rise this year in 11 of the 14 cities surveyed. Hamburg and Berlin, by comparison, are expected to fall 1 per cent and 5 per cent, respectively.