Since the certain time right physical or legal persons are dealing with the market of the fixed property. They are investing into the building site of houses, office, commercial, industrial objects, this way for the sale as well as the renting out, they are buying the fixed property and they will supervise full investment process from planning the phase until finishing construction and farther the sale or the renting out. They are mediating in the sale whether he will rent fixed properties. This person is a developer. He could fulfil his duties property agreements are being concluded. On account of the subject of the agreement an agreement is one of such agreements which serves specific booking the place above all in the queue of potential buyers. As a result of signing such an agreement, the purchaser is staying put on a list expecting for signing the appropriate property agreement. In practice often unfortunately agreements the developer proposes before he receives a planning permission. In order to avoid lengthening of awaiting spending him on the permission and risks of the refusal, it is necessary absolutely earlier to establish whether an ultimate planning permission was get. But a property contract is most binding. She belongs to the group of nameless agreements, they became known and they developed in the turnover, however so far they didn’t wait until of separate regulation in legal articles. Elements contain all sorts of people of agreements which in one piece are supposed to serve for realization of the aim of building investment. In practice every developer forms the own pattern of the agreement what much is making it difficult the control and comparing offers of all sorts companies. The property agreement should precisely determine the subject of the agreement, to remember contracting parties, the price, the completion date of the structure, the receipt of the flat, signing the notarial deed, the legal situation of the apartment and a lot of different equally important elements, about which he belongs.