Yes there is something. In other words - nothing comes for free.
First - flipping of property has nothing to do with mortgage or loan or anything connected to financing. You can buy it, and you can easily sell it. There is some paperwork in between...
Second - property itself is going to determine - are you going to have problems in flipping it. If you buy something for 2500dhs/sqft in the middle of desert ready in 2011, you will have HARD time flipping it. If you buy something where rich would like to live - for the same money - you would flip it easy
Third - although you are starting to pay installments on mortgage ONLY when property is finished - if you decide to sell it buy that time - you will need to pay out INTEREST on that mortgage for every month that you had it. If you sell your property in 6 months from signing your contract - you will need to pay 6 months interest to the bank...If your monthly instalment is around 10 000, most probably is that your interest is 6000 per month. So you need to take all of that into consideration.
Please read Terms and Conditions from mortgage companies - to better understand this matter. BANK ISN'T GIVING ANYTHING FOR FREE - NO MATTER ISLAMIC OR NON ISLAMIC!!!
Hope this helps...ask more!