UK asking prices are heading down mainly due to weakness in the capital, according to the latest figures from Rightmove.
The Rightmove House Price Index eased 1.2% in the month to 9 September, with average asking prices in London falling 2.9%.
Data suggested that weakness was concentrated in the more expensive areas of the capital.
The survey marks the first decline in asking prices for this particular month since 2013.
However, it is also the third fall in asking prices for newly-listed properties on the Rightmove website in four months. The latest 1.2% drop follows the 0.9% decline registered in the prior month.
Rightmove suggested that the housing market was weaker than usual as the figures showed an absence of any “autumn bounce”.
“Estate agents are clearly advising many sellers that they have to lower their price expectations”, said Rightmove housing market analyst Miles Shipside.
Rightmove data showed inner London asking prices had declined by 5.3% during the month to September 9.
Affluent areas such as Kensington, Chelsea, Hammersmith and Fulham bore the brunt of the falls.
It means the average asking price of a London home has eased to £610,912 versus £629,270 in August.
Nationally, the average price of a home stands at £310,003, having fallen by £3,600.
Recent figures from Halifax, measuring the value of transactions, showed UK house price inflation had risen by 1.1% in August versus 0.7% in July.
Halifax claimed the average sold price for a UK home had hit a record £222,293 in the month, just above the previous peak of £222,190 reached in December 2016.