Offer-strategies demand project-independent preparations when they are pointed on severe result duty or on ready-made solutions. The high investments and the broad knowledge that are necessary are often too much for one company. In that case long-term partnership, both commercial and operational, is wanted. Project partnering starts with a client and his project, while a market vision is the starting point of enduring partnering. In long lasting partnerships companies in a network develop a common offer-strategy meanwhile each keeps its own identity and provides its specific contribution. Such an alliance is a shape of organization across the borders of the own company. Marketing and product development are joined network disciplines. The knowledge of the organizational aspect of such collaboration is well spread. Less well known is the organization psychological facet. Companies have the tendency to oppress the existing diversity for the purpose of a vague and unrealistic consensus. Recognizing, acceptation and using the relevant differences (in targets, interests, means, culture, systems and ideas) is absolutely needed, because one party offers something the others are missing. To reach this patience has to be practiced. And besides it takes time to give shape to the complex social and operational processes and to expand trustworthiness.
On several offering levels this type of partnership can be used, in restructuring parts of cities, building complexes of private or commercial properties as well as in the development of complex building systems.