The tendency to seek knowledge and the desire to gain it is a result of basic existential needs of an individual. The idea is to fulfil the so-called cognitive needs by having access to information which an individual needs in a given place and at a given time. Nowadays, access to public information as a certain type of a legal institution is not only a condition for existence of a democratic rule of law but above all it is an efficient tool to implement numerous civil rights. Therefore, a precise definition of what instruments are included in the concept of common information law based on general rules applicable in the dis-cussed range, as well as in the range of regulations related to specific areas of an individual’s life, plays an essential role in the functioning of an information society. Determination of measures which a unit can benefit from, or which have been created for an individual within the institution of access to information, in particular in the field of spatial planning and development, is the main subject of deliberations conducted in this paper.