Published by Zeb BhamHouse prices fell during February 2011, the latest figures from Halifax show.According to the lender's House Price Index, prices dropped by 0.9 per cent over the course of the month, while the annual change stood at -2.8 per cent.Martin Ellis, housing economist at Halifax, said prices are following the underlying trend."Overall, we expect a modest two per cent decrease in house prices in 2011. Uncertainty over the economic outlook is likely to weigh down on housing demand this year," Mr Ellis said.He added that fewer properties have been coming on to the market in recent months, which may help to improve the balance between supply and demand and prevent larger price falls.Weaker house prices can affect the strength of the currency on the foreign exchange market, as they are often used as a general indicator of the health of the country's economy.Earlier this week, Nationwide's housing index revealed an annual decrease of 0.1 per cent. For the month of February, Nationwide claimed prices rose by 0.3 per cent.For more information on foreign exchange treasury services and risk management, visit our Corporate FX site