Welcome to Sustainable United Materials
Our approach is unique: we provide efficient, attractive, sustainable shelter…using comprehensive interdisciplinary design science to build green and fast.
SUMhouse empowers people to easily make a responsible choice for their future. There is very little waste, and trees are not used and the concrete frame is produced locally. All rainwater is captured and this is the ideal solar house. The SUMhouse prototype is certified LEED Platinum and net zero is a cinch, a passive house is passively accomplished.

01. Founded in 1984
Premium Home Builder Mark Barker started his own construction business in 1984. Mark’s natural gift for the artistic in design would propel him to be recognized for some of the more incredible homes that bless the Western North Carolina landscapes. Mark’s diversity with his craft would contribute to a credit of over 200 custom homes and remodels in his portfolio. Homes from under 2,000 to 18,000 square feet, and some of the homes caused more than a few custom builders to step back and decline to even bid because of their seeming unrealistic design challenges
02. Strong Environmental Integrity
SUMhouse Integrates Building Science and Construction Logic With Material and Design Innovation to Advance The Human Condition, Using Proven, Simple, and Current Technology…While Preserving the Earth and Environment Simultaneously! SUMhouse uses comprehensive
interdisciplinary design science to build green and fast. SUMhouse empowers people to easily make a responsible choice for their future.
03. Highest Quality - Lower Cost
This system provides You the highest quality attainable yet costs much less than other construction methods. Utility, insurance and maintenance bills are lower forever. SUM’s tightly insulated shell gives you a home without organic material in the structure… to deliver longevity. There is very little waste, and trees are not used and the concrete frame is produced locally. All rainwater is captured and this is the ideal solar house. The SUMhouse is the
most affordable home to own NOW and for generations to come!
04. Exceptionable Durability
A SUMhouse is inert; it will last a lifetime
without attention. The lid is concrete and
will never need replacing. There are no
gutters. Since wood is not a component,
it cannot rot. It is also invulnerable to insect
damage and mold. You may need to water
your plants on a patio up top, but you will
NEVER have todays housekeeping worries
or disasters again. Sit back and relax!
Our Latest Projects

Lakeside Ridge
Swannanoa, NC

Lakeside (back)
Swannanoa, NC

Boar's Head Castle
Mount Gandalf
Mitchell County, NC

Eco Green Building
Black Mountain, NC
Contact
Let's talk about your project