Stewards for Sustainable Development

RES is the largest, most experienced ecological offset provider in the United States.

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Streamline Project Permitting

RES mitigation solutions include wetland, stream, species, nutrient and buffer offsets to help obtain your permit as required by regulatory agencies.

How We Work

Ecological Offset Solutions Across the US

RES delivers ecological offset solutions across many geographies ranging from the Southwest, to the Gulf Coast, to the Mid-Atlantic and throughout Appalachia.

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We Are RES

As the largest, most experienced ecological offset provider in the United States, we’re committed to making the world a better place to live. We work tirelessly to affect the balance between economic development and the environment by offsetting unavoidable project impacts and conserving our planet’s finite resources.

So far, we’ve helped by restoring more than 40,000 acres of wetlands, streams, and habitats and planting over 10 million trees. And that’s just the beginning.

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One of the country’s fastest-growing environmental companies.

At a Glance


Easements Closed


Acres of Endangered
Species Habitats Preserved


Acres of Wetlands Restored

10 Million

Trees Planted

155 Miles

of Streams Restored


We specialize in restoring and enhancing degraded areas and protecting natural habitats in perpetuity—all while mitigating risk and liability for our clients, ensuring strict regulatory compliance, and collaborating with local landowners.

Who We Serve

RES works with clients across the American landscape to streamline navigation of regulatory approval processes of the Clean Water Act and the Endangered Species Act and associated state and local regulations.

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News & Events


Navigating the complex world of environmental regulation, restorative challenges, and impact analysis has made RES one of the foremost authorities in the ecological offset industry. Find white papers, case studies, and articles covering topics from operating in environmentally sensitive areas to streamlining the permitting process. 

Industry Resources