This paper examines a new construction method in engineered wood material, including plywood and LVL (Laminated Veneer Lumber), using computer numerically controlled routers to build simple buildings in a quick and inexpensive way. With the method elaborate on here, there is no need to use skilled labor or sophisticated construction equipment. It provides an effective way of rebuilding in the wake of natural disasters. The primary innovations of this method are in ease of construction and transportation by using flat, portable, and durable engineered wood products, application of the traditional wisdom in wooden carpentry, and the efficiency of digital fabrication technology. In the case of disaster relief, using this construction process as a method of organizing community is essential for successful implementation. The experience of the Great East Japan Earthquake and Tsunami in March, 2011 in north-east Japan highlights the importance of bringing both technical and social skills to disaster reconstruction.