At one extreme is RG9 6, a leafy district of the Chilterns, Buckinghamshire, where house prices soared by 63.5pc last year.
At the other is NE37 3, a notorious suburb of Washington between Newcastle and Sunderland, where prices plummeted by 53.5pc.
Telegraph Money visited both to find out why prices are swinging so wildly.
Leaning over the handlebars of his bike on a freezing, blue-skied January afternoon, Kyle, 24, looks out across his neighbourhood and sighs. “Kids from here are a bit lost,” he says. “For young people there’s nothing to do.”
Kyle has spent all his life in Sulgrave, a suburb of Washington, a town sandwiched between Newcastle and Sunderland.
Sulgrave is an area whose reputation precedes it. “There are drug addicts,” Kyle says. “But even the junkies are friendly.”
Dragged down by a lack of opportunities and a notoriety for crime it can’t seem to shake, prospective house-buyers are shunning the area, despite rock-bottom prices.
The average property price in Sulgrave plunged 53.5pc from £73,270 to £34,074 in the last year, The Telegraph’s house price calculator revealed.
The postcode area takes in about 3,000 households, so the rate of change can be affected by low levels of transactions, or a few particularly high or low sale prices.
The nose dive in the NE37 3 postcode was the steepest house price fall of any in the country.
Yet the collapse did not extend to the wider Washington area. In the nearby NE37 7 and NE37 8 postcodes, encompassing Washington town centre and the Fatfield and Oxclose neighbourhoods, house prices jumped by 18.5pc and 31.1pc respectively.