If someone has already lived in a purchased apartment, and repairs were carried out in it, during the implementation of a new reconstruction, flaws of the previous repair may open. Sometimes there are so many of them that it is easier to make a comprehensive repair of a new apartment than to correct all the errors allowed by the predecessors. Because not a single construction company, remaking poorly work, will give a complete guarantee that all errors will be corrected. Some of them can appear only after a few months, or even after a few years. In addition, partial repairs to specialists are not beneficial, because the share of work is already being done, and they either refuse such a repair or significantly raise prices.