The Pensmore estate uses TransForm Insulated Concrete Forms and is built to withstand an F5 tornado.  Using the latest technology in construction, the Pensmore estate is the 4th largest home in the United States.

The Pensmore estate

Pensmore includes:


13 bedrooms


14 bathrooms


A variety of exciting new technologies allow Pensmore to dramatically cut energy costs without sacrificing practicality.


Pensmore’s heating system utilizes a cutting-edge technique for harvesting solar heat energy that exploits the vast energy storage potential of its steel reinforced TransForm concrete shell. Many builders already make use of traditional solar heat collectors, which are highly efficient at moderate temperatures. But until now, it has been expensive and impractical to "bank" the excess solar heat generated on sunnier days. Pensmore's newly-developed technologies enable it to store millions of BTUs of thermal energy while the sun shines, slowly releasing this "green" heat back into the interior at night and during cloudy days.


Secondary sources of heat include combustion of wood products grown on the estate (net carbon neutral) and "conventional" geothermal systems.


Similarly, Pensmore’s cooling system will make use of a unique technology that is both innovative and practical. We will be releasing more detailed information on the heating, cooling, and air conditioning systems in the future, so check back for updates as the chateau approaches completion.


Sustainability means more than just energy efficiency. It also means minimizing total life-cycle costs through low and zero-maintenance materials, and reduced use of non-renewable products during construction. Perhaps one of the biggest environmental advantages of Pensmore is its inherent durability. Designed to endure for centuries, the chateau will leave a minimum impact on the environment while other structures are built, demolished and built again and again.


Pensmore Estate exterior

Pensmore relies on the following systems and technologies:

● TransForm: super-insulated energy-storing concrete forming system

Solar thermal heat collectors

● Geo-thermal

Radiant heating and cooling

● Advanced climate control software

Rainwater collection

● Helix steel fibers