Twice as many investors are set to increase their allocation to property than decrease it over the next two years, exposing themselves to potentially high levels of risk, according to a new survey.

The survey of 2,000 high net worth investors conducted by Barclays Wealth and the Economist Intelligence Unit found that the perception of both residential and commercial property as an undervalued high-performing asset class has grown and that investors may run the risk of over-exposure.