Brits considering investing in property overseas have been advised to pay close attention to currency exchange rates.Individuals looking to buy a second home or an investment property overseas have been urged to make sure they research currency exchange rates thoroughly.Financial advice site This is Money has advised that with the pound still languishing against the euro, buyers could find they are paying a hefty premium on the value of the property by buying at the wrong time."Some developers may be open to negotiation on whether to sell in euros or sterling if they are anxious to offload properties, so it pays to ask," advised columnist Gillian Bevis.Other tips for avoiding the pitfalls of a potential downturn in overseas property included looking for real estate in underdeveloped markets, where there is still room for capital growth potential.Haggling could also pay dividends for investors buying property in Spain as it is common for estate agencies to sell properties at a discount of up to 15 per cent.Shelter Offshore has also advised people to use the internet to its fullest potential when searching out deals on foreign property deals.