Gui-derricks and stiff-leg-derricks were contrived or improved mainly in north country. On the other hand, in south country, travelling cranes were devised with whole timber scaffold. In large building sites, these new equipments became popular gradually from 1840 s, and steam began to be utilized as motive power. As the summary of this series of papers, the following are concluded. Mechanization took place in stoneworking, wood-working and brick manufacturing, and the spread of wood-working machinery was conspicuous. With construction equipments, improvements in lifting machinery were efficient. In the industry under discussion, these improvements were employed principally by big general builders. To treat the technical advance in building industry, increasing difference of the scale among buisinesses should be borne in mind.