The next care will be the acquisition of high -quality material necessary to ensure the durability of the construction. This is especially true for woody species, which, with excellent outdoor form, can be rotten from the inside. The issue of purchasing building materials must be taken very carefully. If someone does not want or cannot build a house on his own, then it is better to purchase a ready-made. Then the owner will only have to insulate him, carry out interior decoration and bring communications.