When you buy property Off-Plan you are actually entering into a contract with a developer who has all the design and permits to build a home, but the property may not be available in some occasions for a couple of years. What this means is that your property is yet to be built but it already has a minimum value due to the projects viability and permits to build.
Forward planning on Property Investment in Gibraltar, as the current market stands one of the most secure and most rentable Investments is Property. Investments are never 100% secure but the demand for property determines the results.