we are dreamers, designers + developers DEDICATED TO BUILDING A MORE SUSTAINABLE PLANET.   


MOUNTAINSUN is a strategic full-service Design + Development Services firm focused on solutions that result in a more sustainable built environment.

We provide land planning, civil engineering design and development management for projects around the world.  

We are land stewards, outdoors-people, nature lovers and explorers dedicated to the conservation of our wildest places. Some of the planet's greatest landscapes are threatened by uncontrolled and un-thoughtful development, deforestation and inappropriate land use.

Low-impact, high performance development. We support appropriate and sustainable urban growth by designing respectfully and in harmony with the land, a light touch - while promoting the use of the most innovative Energy Net Zero and passive building strategies and materials and on the market today.  Proprietary technologies such as EcoSmart Geogrids and Tesla EcoSystems - whom we have forged strategic partnerships for use on our projects.

We give back. We are the first and only design + development firm to partner with 1% FOR THE PLANET, donating a percentage of our profits to our partners supporting environmental advocacy.

We are creators and makers.  We promote and follow the tenants of simple, low-impact-living.  In addition to full-services design services, we source and develop our own ENZ eco-conscious housing and hospitality projects - that blend the natural and built environments.  We invest in building communities that support local-based agricultural,  attainable housing, renewable energy solutions, cultural preservation and local economic development - projects which yield economic, social and environmental returns.

If you want to learn more, contact us to find out how you can work with us on your next project or get involved in our initiatives. 


lets leave this world a little better than we found it. live simply.


When we see land as a community to which we belong, we may begin to use it with love and respect.
— Aldo Leupold, Father of Wildlife Ecology


Want to learn more?

Find out about our organization, the services we provide, our development strategy and past projects. 

Learn More →

Take Action

Ready to take the next step?

Find you more about our environmental strategy and results of our advocacy. You can become an advocate by supporting one of our initiatives or investing in one of our projects.

Find Out How →

All Rights Reserved.  2019 Mountain Sun Holdings, LLC

Texas Firm # 18944

All photography provided by Russ Hooper