In some cities the average discount between what people put their home on the market for, and what they eventually take for it, is well over £27,000.
That's according to new research form property website Zoopla, which looked at the gap between asking prices and sale prices.
Across the 20 cities it studied, there were only two places where people were paying above asking prices - Edinburgh and Glasgow - everywhere else homes were selling at a discount, and the discounts are growing.
Zoopla's Richard Donnell said: "Sellers are having to accept slightly higher discounts to the asking price in order to achieve a sale," he said.
"This is a natural response to weaker market conditions and buyers are starting to negotiate harder on price."
Zoopla added that the slowdown in prices was extending beyond south eastern England.
Manchester, Nottingham and Leicester all witnessed a slowdown in house price growth too.
The biggest discounts
Zoopla found the biggest discounts were in London, with homes changing hands for £27,525 less than the asking price on average, or 5.7% off.
But in central areas - such as Kensington and Chelsea - the discount can be double that.
Overall, the average UK home is now selling for £8,529 under its asking price, or 3.9%, with things worst in Aberdeen where the percentage discount is more than 8% seeing people get £13,000 off prices.
After Aberdeen and London, the biggest discounts could be found in Newcastle, Oxford, Liverpool, Portsmouth, Bornemouth, Cambridge and Southampton.
Hope for sellers
However, two cities bucked the trend - Glasgow and Edinburgh - where properties sell at £6,510 and £14,351 above asking prices respectively.
And Zoopla was keen to point out that the discounts were still relatively small.
"Correctly priced homes continue to sell within a reasonable period and setting the asking price at the right level remains a key decision to agree with your agent," Donnell said.
"The slowdown in the rate of price growth is set to extend further across the south of England while we expect continued above average house price growth in regional cities where employment levels continues to grow, and affordability is attractive.”
Overall, UK house prices rose by 2.2% to £218,700 in the period, as growth slowed down from 3.1% in the same period last year.
