The design-project is a pack of schemes, which is used by the builders, construction finishers, suppliers, manufacturers and other contractors, for a high-quality realization of all the complex tasks.

The contractor selection can be done based on the contest (tender) results, where the main criteria for winning is not only the final price, but also the following factors are taking into account:

• the quality of the estimates;

• the contractor's experience and their work's quality, which is judged by rating their previous jobs' results;

• the contractor's lifetime on the market, availability of licenses for works;

• the offered guarantees on the results;

• the offered agreement's details.