Estate agents have 8% fewer new instructions than this time a year ago, Rightmove reported this morning, as the property drought continues to tighten its grip and sellers stay away.

Miles Shipside, Rightmove’s director and housing market analyst, said there was a “vicious cycle of not enough property on the market to meet demand, increasing prices and a reluctance among home owners to come to market if they think the prospects of finding and funding their next move are severely compromised”.

The Rightmove report points to three reasons why would-be sellers are reluctant to put their homes on the market.

According to research among sellers who were seriously considering a move, they either cannot find anywhere they want to buy, cannot find a property they can afford or simply believe the cost of moving is too high.

Shipside said: “(The stay-away sellers) could be helping to get the country’s limited property stock circulating, but they have concerns about coming to market, deepening the supply shortages affecting many areas.”

The report also said that the continuing imbalance between supply and demand in the property market has led to the strongest August price performance since 2007.

Between July and August the price of property new on the market dipped by just 0.8%, bucking an eight-year trend post-recession of larger summer holiday price drops.

The average national asking price for new properties now stands at £292,284 compared to £294,542 in July, but still up 6.4% up on August 2014.

The average UK estate agent now has 65 properties for sale on their books at any one time, with time on the market averaging 65 days.

Broken down into regions, asking prices have generally dropped month-on-month in the south and risen in the north.

Between July and August prices dropped 1.2% in the east of England and the south-east, 1.3% in Greater London and 1.4% in the east midlands and the south-west.

In the west midlands prices rose by 0.1%, by 0.2% in Wales, 0.5% in the north-west and by 1.2% in the north-east.

However, many agents said they sensed a desire to sell among many owners, even if those owners were being held back by the reasons mentioned above.

Mark Manning, director of Manning Stainton in Leeds, Harrogate, Wetherby and Wakefield, said: “In July the number of appraisals that we carried out was 21% higher than usual, so there’s definitely a sense that there are a greater number of people who are considering selling.

“With regards to stock level, it’s not that there’s no stock, it’s just that when good property does come on, the demand is so high that it’s selling much more quickly than usual.”