My North reports a Traverse City, Michigan, contractor offers a 725 square foot modular home he can assemble in a day.  Drew Craven uses Structural Insulated Panels (SIP) for the sides, a corrugated metal slanted roof concealing a second bedroom, and sliding barn doors that seal the home’s windows, but also open onto a deck during seasonable weather.  Storage and utilities are tucked into the floor and cabinets to maximize useable space, and the shower is outside for rural summer cleansing.  His company, Cottage in a Day, promotes green technology and sustainability by keeping the energy costs low, and says his modular buildings meet or exceed Energy Star and Leadership for Energy and Environmental Design (LEED) standards.  Bamboo flooring and unfinished wood beams fit with the northern Michigan flavor.  Craven offers customized modular designs, and assembles the homes on site himself.