Michelle Kaufmann’s new eco-prefab home has debuted on the grass in front of San Francisco City Hall as part of the West Coast Green show at San Francisco’s Civic Center Plaza.

Inhabitat’s Jill Feherenbacher and ScribeMedia’s Perry Hallinan got a sneak peak of the house as it was getting set up, and interviewed the designer.

Michelle Kaufmann is known for her modern, sustainable prefab designs, and the mkLotus goes above and beyond all previous MK designs. The modular construction allows for customization and flexibility, while sliding doors allow residents to open up their house to the elements.

mkLotus is compact and stunning, with xeriscape landscaping, and the most high-tech green materials and sustainable systems available, including a graywater recycling system, green roof, solar panels, and even a spot to plug in your electric vehicle for charging.

From sustainable materials like flyash concrete, FSC-certified wood, no-VOC paint and EcoResin to the green roof, LED lighting system, EnergyStar appliances, photovoltaic energy system, and rainwater/graywater catchment, the house is as green as it gets. The ‘zero-energy’ house actually produces so much energy from the solar panels on the roof that you can charge your electric vehicle with a plug in the side of the house.

Above and beyond all the green, however, the house is just a testament to thoughtful, smart design. Every material, system and design choice in the house seems to be thought out, and have purpose. The high ceilings, skylights, gently angled walls, floor to ceiling glass and copious daylight all work to make the 700 square foot house feel a lot bigger and more spacious than it actually is.