A leasehold property owner can convert leasehold property to freehold property if the owner has owned leasehold property with general power of attorney (GPA), NOC or documents to convert property. In some specific areas such as Delhi NCR, Gurgaon property owners have never converted their property due to hefty conversion cost or cumbersome process of conversion. You can get more information about it after reading http://www.commonfloor.com/articles/freehold-property-has-better-marketability-6108.html