Almost 4,000 more homes should have been built in the past four years in Northampton to keep up with demand, new figures have shown.
The National Housing Federation has estimated that 6,004 new houses were needed in between 2011 and 2014.
But figures from Northampton Borough Council showed only 2,010 were built - a shortfall of 3,994 homes.
Housing minister Brandon Lewis has said the Government is aiming to build one million new homes by 2020 to help make up the national shortfall, estimated to be 974,000 over the past four years.
Gill Payne, director of policy and external affairs for the National Housing Federation, said the shortage of homes was causing prices to soar “out of reach” of many people.
She said: “Families and young people across the country are crying out for genuinely affordable homes so they can put roots down and achieve their dreams of owning a home.
“Skyrocketing rents and ballooning house prices are eating up more and more of people’s wages and forcing people out of their local communities or into smaller, lower quality housing.
“We haven’t built enough homes in this country for decades, and if the gap between the number of households forming and the number of new homes being built continues to grow, we are in danger of not being able to house our children.”
The full figures for Northampton are:
2011 Total completions 320
2012 Total completions 450
2013 Total completions 530
2014 Total completions 710
Housing ‘need’ each year 1,501
Total housing need over four years 6,004
Shortfall over four years -3,994
Unmet need as a percentage 67 per cent