Lee Porter Butler discovered the gravity geo-thermal envelope in 1972-74.  He taught at
UCAL Berkeley while lecturing, building homes world-wide, and conducting further research.
  All his designs are integrated for safety, comfort, beauty, cleanliness, and  protecting human
life in the event of any disaster.  He continued to create exquisite, earth-friendly homes for
conscious individuals, until his death on November 22, 2005. His wife, Jill Karlin Butler  is
carrying on promoting his work, and his vision for future earth friendly housing, to which he
dedicated his life.
Prototypes of Lee Porter Butler's invention of the gravity geo-thermal
envelope, buildings world-wide which maintain creature comfort anywhere,
are elegant, affordable, and have never had a heating or cooling bill since the
day they were built over twenty-five years ago.
The first passive solar home Lee built on land
left to him by his father in West Tennessee.  
In this 26 room, indoor swimming pool
greenhouse home, Lee observed conditions
which led to the creation of the envelope, and
This home nestled in the woods near
Atlanta in the process of construction is
one of the first Ekose'a Homes.
This home in lake Tahoe  stays warm in overcast snowy conditions. The man who built
these homes in Tahoe, Tom Smith
Many of the people who built the first prototypes of Ekose'a Homes became the
representatives for the company, giving guidance and supervising others in constructing their
own Ekose'a Home.
The Greenhouse in Butler's
first prototype passive solar
home in Medon, Tennessee.
When Lee opened the door
at the top level of this
greenhouse, 2 weeks after a
crippling ice storm, in which
all electricity was cut off.  
When he opened the door, he
was met by a blast of hot hot
air, which startled him.  He
got a thermometer and
measured the temperature
over 100 degrees.  It started
this genius on a path of
inquiry, which he persued his
entire life.  he realized that if
he could figure out the
principles governing that
whoosh of hot air, he would
have discovered something
profound for all humanity.  It
took Lee two years of
serious inquiry to discover
those principles, which he
outlines with clarity in his
hall mark book, Ekose'a
The envelope space in
this Libby, Montana
home serves as a buffer,
to the outside, while
allowing the air to
circulate from the
ground , around the
Simple elegance, full of light,
fresh air, and
water elements, and lots of
plants to oxygenate the air
are standard features in all
of the work of Lee Porter
Butler.  The master stressed
the need for negative ions in
the loop which the envelope
makes.  On page four of
Lee's landmark book,
Ekose'a Homes he describes
his plans for today, which are
for a totally independent
home, which takes nothing
from the earth, air, or water
to operate and puts nothing
into the earth, air or water
while functioning, as well as
protecting life in the event of
any disaster, natural or man
Lee built homes for
doctors, businessmen,
attorneys, and regular
Their  beauty is testimony
to the integrated design,
which works as it did the
day these buildings were
continued the unending
process of refinement in
design to the day he died.
This elegant home in Lake Tahoe  stays toasty even on days like this, without burning
anything. Lee's invention of the gravity geo-thermal envelope allows creature comfort no
matter what the external conditions may be.   Lee's designs have been utilized in homes in
northern Canada as well as Sweeden, and have been without  utility bills for over twenty five
years since they were first built.
for your copy of
Ekose'a Homes
send $33 check or
money order
Jill Butler
151 Chilean Avenue
Palm Beach, Florida
It was a gorgeous spring day in West Tennessee when Lee lay on the ground with his
hands folded under his head, looking up at a majestic pine tree.  He asked the tree,
"Why is it so easy for you, and so difficult for mankind? Man runs to and fro for
resources, and you just stand there, and all you require comes to you."  In a flash the
answer flooded his mind.  He ran into the house grabbed a piece of paper and drew out
"the envelope", the design for buildings which will revolutionize building forever.