In the centre of Warsaw at Próżna Street there are two ruined apartment houses, which for many years have been waiting for the general overhaul. The Warimpex AG is a company which will restore the splendor to those prewar apartment houses. After the general overhaul the historical apartment houses will be transformed into modern office buildings. It is worth noting that the front façade from the side of Próżna Street will be renovated in accordance with its original prewar architecture, while the elevation from the inner courtyard side will be expanded and finished in a modern style. The commercialization of the office space is commissioned to the consulting company Jones Lang LaSalle, which targets its offer to the tenants appreciating luxury and historical interior.