A floorplans supplier which claims that its products are accurate to the millimetre has said that property mis-measurement and over-valuation could be the next PPI scandal.

James Marshall, founder and CEO of Spec, which also supplies photography and EPCs, claims that mis-measurement is rife – and that nearly half of buyers would want compensation if they purchased a property on the strength of a floorplan which turned out to be inaccurate.

Marshall claimed that property measurement in London is so inaccurate that properties have been mis-sold by an average of £33,800.

Earlier this year, his firm compared measurements and plans of 304 properties in London with its own technology.

Spec says that it found one in eight had a discrepancy of at least 100 sq ft, while the average discrepancy across all properties was 54 sq ft.

In most (60%) cases where there was mis-measurement, the size of the property was over-stated.

His firm went on to commission a YouGov poll of 2,100 UK adults in July.

Nine in ten considered property size to be important when buying a home, and 89% said the size had a bearing on the price.

Nine out of ten considered the accuracy of the information provided by estate agents to be important and 92% believed agents should be required by law to provide accurate measurements.

Almost half (45%) of respondents said that they would expect compensation for moving into a property with an inaccurately measured floorplan.

Marshall said that proposals put forward by the Regulation of Property Agents (RoPA) working group “ignored” the issue of mis-measurement.

Marshall was specific in his claims of mis-measurement, seemingly hitting out at competitors who also supply floorplans and photography, but also critical of agents who use mis-measured floorplans in their marketing.

He said: “We know that measurements are undertaken by photographers with neither the necessary training nor the required equipment.

“These measurements are then included in property reports and promoted on property listing sites on a price per square foot basis, despite admitting in their fine print that the figure indicated should not be used for valuation purposes.

“This means that customers are purchasing properties based on incorrect measurement data, which then impacts EPC ratings, Stamp Duty and ultimately the cost of purchasing, owning and running a home.”

Marshall said: “It’s incredible that the biggest consumer scandal in this country has been routinely ignored by both government and regulators.

“Given the importance of property size, standardising the way homes are measured should be a key focus for both the industry and consumers alike.

“Consumers are being routinely misled across the industry.”

He claimed that as the PPI scandal ends, the one that is on the rise is mis-measurement and over-valuation.

His own firm says it uses software and laser equipment that complies with RICS requirements.

Spec launched last year and has been promoted amid PR that has made similarly vocal claims before.

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