Power of attorney for establishing and annotating personal rights

Over the immovable property/properties that I own; to establish, for consideration or free of charge, on such terms as the attorney-in-fact sees fit and in favour of such persons or institutions as he/she sees fit, all kinds of personal rights to be recorded and annotated in the land registry, such as lease, pre-emption, repurchase, redemption, promise of sale and the right to construct in return for a share of the land, and to have these rights annotated in the land registry and, where necessary, cancelled; to establish these rights in my favour, for consideration or free of charge, over the immovable property or properties of others, to have them annotated in the land registry and, where necessary, cancelled; to carry out, follow up and conclude by his/her signature all acts and transactions required in these matters,