Asking prices have soared to a new record high, driven by high demand and low supply, according to Rightmove.

There are 6% fewer properties coming to the market than this time last year as home owners stay put.

Separately, Nationwide has said that home mover activity remains 52% down from its peak, with first-time buyer levels 26% below the pre-crunch level.

This morning Rightmove reports the biggest September rise for 13 years in asking prices for properties new to the market.

The average new asking price is now £294,834 – up 0.9% on August and 6.4% on a year ago.

Marked regional variations push Surrey to the top of the leader board, where the average asking price of a property new to the market is now £545,841.

In London the average asking price has shot up 2.2% in a month to stand at £620,003.

The 15 most expensive counties are all in the south, where property listings are down 7.1%. In the north, there are also fewer properties on the market, down 4.9%.

In the north, the midlands and Wales, asking prices have all slipped on a monthly basis.

For example, the average asking price of a property new to the market in the north-east is £144,219, down 3.2%. In Yorkshire & the Humber it has dipped 0.4% from August.

Rightmove said that the falls in the lower-priced regions are reducing would-be sellers’ ability to raise adequate funds to move, and exacerbating supply shortages.

Despite London’s overall rise in new asking prices, some areas have had significant monthly slides in asking prices – including a 12.5% fall in Westminster.

The average number of properties for sale per branch is 63, compared with 69 in September last year.

Although Rightmove labels this morning’s index as “September”, in fact most of the new asking prices were measured in August. Altogether, Rightmove measured 134,029 new asking prices between August 9 and September 12.

Speaking at the Financial Services Expo in London, Nationwide senior economist Stefano Silvestrin said that in the mortgage market, home moving and first-time buying activity are both down from their pre-credit crunch peak, while buy-to-let transactions are down 44%.

He said that only cash transactions are ahead of their pre-crunch peak, up 3%.

He said the major risk to the entire UK housing market is the continued poor supply of homes on the market.

* Hamptons has updated its price forecast predictions for the housing market. It now expects house prices across England and Wale to rise 5% this year and 4.5% next.

It had previously forecast a price rise this year of just 2.5%, and 3.5% next year.