The average UK house price will leap by nearly £60,000 over the next five years according to an economic forecaster, hitting more than £320,000 in 2020.
The rungs of the property ladder are also moving further apart, according to Cebr (the Centre for Economics and Business Research) - making it harder for people to trade up to a bigger home as the cost has “skyrocketed”.
The forecaster said that house prices in 2015 are set to be 5.6% higher compared with average prices across 2014 - and the average UK property value will stand at a record high of £263,000 this year.
Property prices are predicted to continue their upward march in the years ahead. Prices are expected to be 3.5% higher in 2016 than they were this year, with further annual increases of around 4% in the four years that follow.
These increases will take the average price of a UK property to £321,600 during 2020 - £58,600 more than the average house price in 2015, according to Cebr.
Predicted average house prices between 2015 and 2020
Average house price predictions from Cebr
Cebr had previously predicted that house prices would increase by 4.7% annually in 2015, but it has revised its figure upwards to 5.6% in light of a lack of properties coming up for sale, which is “drying up supply” and putting an upward pressure on prices.
It also says that the price gaps between different property types are widening. This is making it harder for people to climb up the property ladder.
For example, in London, someone who wants to move from a flat to a terraced home which is perhaps more family friendly would now need to find an extra £176,000.
This cost has nearly quadrupled compared with 2000, when the price of trading up between these property types was £46,000, according to Cebr.
Nina Skero, Cebr economist and main author of the report, said: “A reduction in the number of properties being put on the market has placed further upward pressure on house prices in some parts of the UK.
"This is a result of low levels of housebuilding, but also other factors such as an ageing population and the rising cost of moving up the property ladder.
“The price gap between a first-time home and a larger family home has skyrocketed in some regions, such as London, curbing activity in the housing market.
"For many, the rungs of the property ladder are moving further apart, making it impossible to upsize.”
Current housebuilding plans are not enough on their own to control rising house prices, Cebr said.
It suggested that with an ageing population and retired people less likely to move home, a stamp duty exemption could encourage pensioners to put their larger, family-sized homes on the market.
Last week, a survey from housing charity Shelter among 3,800 tenants found that nearly half of private renters in England who want to buy a home are unable to save any money towards a deposit, while a quarter are only able to save £100 or less a month.
Shelter has warned that further house price rises will “push the goal posts even further away for those hoping to become home owners”.
Meanwhile, a survey released last week by property website Zoopla among nearly 5,000 home owners found that 92% are confident that property values where they live will increase over the coming six months.
Households’ expectations that house prices are set to continue rising is one of the key reasons behind the supply shortage of properties on the market, according to Cebr, with home owners sitting it out in order to sell at the top of the market.
A Department for Communities and Local Government spokesman said: “We’re determined to ensure that anyone who works hard and aspires to own a home of their own has the opportunity to do so.
“During the last five years we’ve brought housebuilding back from the brink, from its lowest levels since the 1920s, by reforming the planning system so over one million permissions have been granted for new homes and almost 800,000 homes delivered since the end of 2009.
"Government initiatives have already helped more than 230,000 people to buy since 2010.”