The latest data from the Office of National Statistics shows that the average property in the area sold for £158,900 – significantly lower than the UK average of £232,797.
Across the North East, property prices have risen by 2.9 per cent in the last year, to £133,538. The region underperformed compared to the UK as whole, which saw the average property value increase by 3.2 per cent.
The data comes from the House Price Index, which the ONS compiles using house sale information from the Land Registry, and the equivalent bodies in Scotland and Northern Ireland.
The average homeowner in Northumberland will have seen their property jump in value by around £20,000 in the last five years.
The figures also showed that buyers who made their first step onto the property ladder in Northumberland in August spent an average of £129,663 – around £17,000 more than it would have cost them five years ago.
Lawrence Bowles, associate director of the research team at estate agents Savills, said the uncertainty over the outcome of Brexit negotiations was fuelling a “tougher lending environment”.
He said: “House price growth in real terms is slowing, and inflation is growing at the rate we’ve been used to over the last few months. Buyers, sellers and lenders are all thinking maybe they should wait until they see the outcome of negotiations.
“Longer term, the issue we expect to see is affordability, as we expect the Bank of England base rate to be back above 2% by 2021 – closer to historical levels, rather than the ultra-low rates we have seen in recent years.
“That, combined with stricter affordability stress tests, will make it more difficult for households to demonstrate that they are able to afford mortgages.
“But we would expect to see a bounce at some point, between finding out the Brexit outcome and the start of higher interest rates.”
Between July last year and June this year, the most recent 12 months for which sales volume data is available, 5,237 homes were sold in Northumberland, 6% fewer than in the previous year.
The highest house prices in the country in July were found in Kensington and Chelsea, London, where properties sold for an average of £1.35 million – 16 times the cost of a home in Burnley, where the average property cost just £85,900.