Sign up for TOURS of the MODEL HOME beginning in February 2011


Seattle’s Jackson Place neighborhood is now home to the City’s first deep green modular demonstration project. The house is the reflection of Greenfab’s goal to provide sustainable, well?designed homes and communities with the long?term vision to encourage mainstream use of modular construction to provide healthier homes at a more affordable price point.

An example of true urban infill, the green modular home is being built on a previously undeveloped portion of a subdivided lot. The home will include a main residence, a 400 square?foot mother?in?law space with separate entry, a 700 square?foot rooftop deck with views of downtown Seattle and Mt. Rainier, a garage and an urban chicken coop in the backyard.

Targeting LEED (Leadership in Energy and Environmental Design) for Homes Platinum, Built Green 5?Star and Energy Star certifications, as well as net?zero energy use, the demonstration home incorporates a number of green features, including a 1,400?gallon cistern for rainwater harvesting and toilet flushing, solar panels to offset nearly a quarter of the electrical usage, a hybrid heat pump water heater, an energy recovery ventilator and “advanced” framing with studs further apart to increase insulation and energy efficiency.

The model home at S. Lane St in Seattle has been built to be a showcase of good design, sustainable systems and energy efficiency.  Currently under construction, the Greenfab model home is scheduled to open for public tours beginning in February 2011.


? Targeting LEED® for Homes Platinum certification

? Targeting Built Green 5?Star certification

? Targeting Energy Star certification

? Targeting net?zero energy


? 1,400?gallon above?ground water storage cistern captures rainwater for on?site irrigation and toilet flushing

? Three 300?gallon storage basins filter and treat grey water from showers, bathroom sinks and washing machine for landscaping

? A rain garden infiltrates overflow from the grey water treatment system and koi pond to recharge ground water

? Urban chicken coop for storage, eggs and composting

? Garden boxes on rooftop deck for urban farming

? True urban infill on a subdivided property (no deconstruction required)

? Enclosed rainscreen siding to decrease thermal bridging and temperature fluctuations

? Projected annual electricity usage of 9,829 kWh, which is 50% less than an average all?electric home

? 2.4 kW photovoltaic system offsets 23% of the home’s annual energy usage

? Highly efficient and cost?effective energy systems, including: GE Hybrid heat pump water heater, 7?day programmable thermostat, Energy Recovery Ventilator, Convectair backup electric heat, Energy efficient appliances and low?flow fixtures

? Fujitsu mini?split heat pump mechanical system

? Advanced framing with studs that are 24 inches apart rather than the traditional 16 inches, resulting in less wood used and an increase in insulation/energy efficiency

? R?26 insulated exterior walls, which is 35% better than code (Code requires R?17)

? No?VOC paints or Formaldehyde?based materials for healthier indoor air quality

? Interactive home monitoring system to control energy consumption

? Drought?tolerant native woodland garden

? Very walkable location (80 out of 100 points) according to


Less construction waste: Due to factory construction that allows for precise cutting and use of materials, modular is inherently green with 50 to 70?percent less waste generated compared to traditional site?built construction (meaning fewer materials end up in landfills).

Shorter construction time: The three bed/2.75 bath 1,790 square?foot single?family demonstration home will be nearly 70?percent complete when it arrives at the site (1827 S Lane Street) in early December. Factory construction occurs simultaneously with site preparation and foundation pouring, which means most modular projects are completed 30? to 50?percent faster than traditional construction.

High standards: Unlike other forms of prefabricated construction (mobile and manufactured homes, for instance), modular uses the same materials, and builds to the same codes and quality standards as traditional site?built homes. In addition, modular homes are built stronger with true right angles, double floor and ceiling assemblies, and added bracing to be able to withstand the stresses of transport and installation.

Healthier indoor air: With all building supplies stored and assembled indoors in a climate?controlled environment rather than outdoors, modular homes are far less likely to develop mold and mildew problems that result from using damp building materials. Additionally, the indoor environment prevents dirt and dust from contaminating ductwork. Improved air quality is a particularly important benefit for the one in four Americans who suffer from asthma or allergies ? often triggered by the presence of mold, mildew and dust in homes.

Greenfab® takes modular one step further, incorporating sustainable building materials, and water? and energy?saving features, as well as establishing a partnership with Guerdon Enterprises, a factory less than 500 miles away to reduce each home’s carbon footprint.


The demonstration home will be open to the public for tours for a limited time upon completion in February 2011.  More information on Greenfab, the demonstration home and updates on public tours can be found at


While the demonstration home, which is designed by HyBrid Architecture, represents one of our higher?end options, Greenfab will offer base homes starting below $150/s.f. ? not including land or site construction costs. We realize that many families have needs that are in conflict with limited budgets, health problems and environmental concerns. Greenfab wants to be a problem?solver for families. Even our most affordable base home package will target high levels of green building certification, and we will have a full range of customizable options that can be targeted to each family’s needs. Costs will be even lower when we have the opportunity to do entire neighborhood developments that are modular. Go to for more information