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Sustainable. Regenerative. Home. The Tah.Mah.Lah. residence, located in the San Francisco Bay Area, is one of the greenest homes in its class in the United States. Its owners set about building a net zero-energy, zero-carbon emission home producing a regenerative effect by making more energy than it uses, restoring habitat, saving and repurposing water, reducing and reusing waste. It’s a home that will sustain itself for generations to come, serving as a living demonstration of what building green can be.
5,600 square feet on a 2.7 acre home site
LEED Platinum Features
Net-zero energy including transportation; fossil fuel free
27-KW photovoltaic system
Reclaimed and FSC-certified wood, reclaimed stone and metal, high efficiency glass
100% of water is recycled/repurposed
High efficiency irrigation system using harvested rainwater (50,000 gallon underground cistern) and treated black/grey wastewater
Potable/city water for domestic use only
Highly efficient plumbing fixtures
99% of construction materials recycled/repurposed
Native landscaping and habitat restoration to enhance and restore native plant communities to support native wildlife
Long-term biological monitoring by a team of field biologists
All California native plants, with the exception of an organic food garden
A new species of native grass sod is used in the project
The landscape is irrigated exclusively by treated blackwater and harvested rainwater
What’s in a Name?
Tah.Mah.Lah. is the Native American Ohlone word for mountain lion or puma, chosen by the owners out of respect for the native cats with whom they share the Portola Valley ecosystem.