Without knowing your complete chart is is not correct to comment on how the Jupiter mahadasha would be, however as I can make out it seems that your lagan is Virgo and Jupiter is in the 12th house in Leo. Jupiter is vargottam , hence it is very strong. It ruled the 4th and the 7th house. You will incur expenses on house will be there, as 4th lord is in the 12th house. Incase you are looking for buying a property then changes are very much there during this period. Jupiter is the karka for dhan or money and it is in the house of expenses, therefore expenses will be high. Incidentally Jupiter is in the Cancer now in transit and will enter Leo in July 2015 likely to give you much stronger effects in the next one year.