Best Environmental & Sustainability Consulting Services in the USA

United States Environmental & Sustainability Consultants

In the USA’s evolving landscape of environmental regulation and sustainable development, securing expert consulting support is not just useful, it’s essential. Governments, industries, and communities rely on trusted firms to navigate brownfield redevelopment, renewable energy permitting, ecosystem restoration, and B Corp certification pathways. This curated list spotlights USA-based environmental & sustainability consulting services grounded in real-world results, client-first transparency, and regional expertise.

Methodology: How We Chose These USA-Based Environmental & Sustainability Consulting Services

Our selection process focused on firms demonstrating:

📊 Research‑driven: Verified outcomes, published projects, or clear service frameworks.

🗣️ Client‑reviewed: Demonstrable client results or testimonials showing measurable impact.

📍 Location‑based: Agencies and founders rooted in the USA, with deep knowledge of local/regional environmental contexts.

🌟 USA Environmental & Sustainability Consultants - Provider Spotlights

Triterra

What they do:
Specializes in brownfield redevelopment, environmental consulting, natural resource management, and mold/air-quality assessments.

Who they work with:
Municipalities, developers, lending institutions, and legal teams.

Operational model:
Michigan-based firm known for its agile project management and direct community partnerships in remediation and redevelopment.

💡 Why they stand out:

🎯 Midwest remediation leaders: Recognized for transforming contaminated urban land into community assets.

📈 Consistent growth: Featured on the Inc. 5000 list four years consecutively.

🧭 Leadership access: Clients work directly with executive leadership during every project phase.

Don McNabb, CEO, Visionary & Principal Scientist of Triterra

Don McNabb brings over 25 years of environmental consulting experience, with expertise in brownfield redevelopment, due diligence, and remediation. He founded Triterra in 2008 after a firm closure, retaining staff and clients to maintain continuity for community-driven redevelopment projects. Known for his responsive leadership and ability to navigate public-private partnerships, Don has helped cities and developers unlock state and federal funds for sustainable land reuse.

Bero Environmental Consulting LLC

‍

What they do:
Provides air and water permitting, CEQA/NEPA compliance, hazardous materials planning, and solid waste facility support across California.

Who they work with:
Renewable energy companies, waste haulers, and environmental developers.

Operational model:
A technical and regulatory consultancy balancing project viability with local and state compliance obligations.

💡 Why they stand out:

⚖️ Title V permitting expertise: Successfully manages complex air permits under California’s strict regulatory system.

🔬 Tech-to-permit integration: Evaluates new waste and energy technologies from a permitting and feasibility lens.

💡 Public funding experience: Helps clients apply for and win public grant support.

Sarah Bero, Founder of Bero Environmental Consulting LLC

Sarah Bero has a background in chemical engineering and over a decade of experience in environmental permitting and compliance. Before founding her firm, she worked in both consulting and regulatory positions, equipping her with a deep understanding of agency expectations and technical documentation. Sarah is known for efficiently guiding complex energy and waste projects through CEQA/NEPA and air permitting with clarity and precision.

Impact Growth Partners

What they do:
Consults on B Corp certification, ESG strategy, stakeholder governance, and social/environmental performance improvement.

Who they work with:
U.S., U.K., and Canadian organizations, from funded startups to $100M+ revenue enterprises.

Operational model:
Delivers highly structured, personalized support to navigate the B Impact Assessment with a proven certification framework.

💡 Why they stand out:

🏆 Certification success rate: 93% of clients achieve B Corp Certification (vs. 28% industry average).

📊 Sector range: Deep experience across 20+ industries, including consumer goods and financial services.

🌱 B Corp thought leaders: Founding members of B Local CT and certified themselves.

Jenifer (Coleman) Gorin, Founder of Impact Growth Partners

Jenifer Gorin earned her MBA from Harvard and spent years in finance before transitioning into sustainability consulting. She founded Impact Growth Partners in 2017 to address the growing demand for credible ESG and B Corp advisory services. Known for her strategic clarity and rigorous documentation support, Jenifer has led successful B Corp certifications for companies ranging from mission-driven startups to established enterprises.

The Loper Group

What they do:
Provides environmental consulting services including CEQA/NEPA support, environmental impact analysis, permit acquisition, and agency coordination.

Who they work with:
Municipal governments, transportation agencies, infrastructure planners, and land developers.

Operational model:
Specializes in seamless integration with public-sector teams and private clients to guide complex California-based projects through environmental review.

💡 Why they stand out:

📝 Deep CEQA/NEPA fluency: Extensive experience preparing EIRs, MNDs, and leading agency consultations.

🚧 Infrastructure-focused insight: Proven success with transportation and public works projects across California.

🔗 Trusted public agency partner: Long-standing relationships with state and local government stakeholders.

John Loper, President of The Loper Group

John Loper brings decades of experience in environmental planning and compliance, with a career rooted in California’s regulatory and transportation systems. He founded The Loper Group to offer expert-level CEQA and NEPA support with a strong emphasis on risk mitigation and efficient approvals. Known for his calm, knowledgeable leadership, John is a go-to expert for agencies and developers managing sensitive projects with complex environmental review requirements.

SOLA Environmental

What they do:
Delivers site assessments, environmental due diligence, hazardous building material surveys, and risk-based remediation consulting.

Who they work with:
Property developers, commercial real estate firms, architects, and asset managers.

Operational model:
A responsive and nimble consultancy focused on helping clients meet transactional deadlines with compliance certainty.

💡 Why they stand out:

⚠️ High-stakes due diligence: Fast, accurate Phase I and Phase II ESAs to meet tight acquisition windows.

🏗 AEC industry partner: Well-integrated into design, engineering, and real estate teams.

⏱ Speed + substance: Known for balancing regulatory precision with timeline-driven execution.

Brad Arnold, Founder & Principal Engineer of SOLA Environmental

Brad Arnold is an environmental professional with over 15 years of experience specializing in site assessments and hazardous materials investigations. He established SOLA Environmental to serve Southern California's fast-paced real estate and redevelopment sectors. Brad is recognized for his strong working knowledge of federal and state regulations and his commitment to helping clients meet acquisition and permitting deadlines without sacrificing quality or compliance.

Green Buoy Consulting

What they do:
Guides small- and medium-sized businesses in sustainability strategy, impact reporting, ESG communications, and purpose-driven brand development.

Who they work with:
Early-stage startups, purpose-driven brands, and growing SMEs across retail, hospitality, and tech.

Operational model:
Focused on creating practical, tailored sustainability roadmaps that align with brand identity and stakeholder engagement.

💡 Why they stand out:

📣 Purpose-first branding: Helps businesses build sustainability into their external communications from day one.

📋 Pragmatic impact reporting: Offers ESG reporting support even to teams without in-house sustainability leads.

💼 Startup fluency: Well-versed in the challenges of early-stage impact implementation.

Eliza E., Founder & CEO of Green Buoy Consulting

Eliza Erskine is a sustainability strategist with a background in corporate responsibility and environmental reporting. She founded Green Buoy Consulting to help small businesses embed sustainability into core operations and storytelling. Eliza is known for her ability to demystify ESG frameworks and make sustainability accessible for companies with limited internal resources. Her work bridges strategy and communication to drive authentic, measurable impact.

Sustridge

What they do:
Provides sustainability consulting including materiality assessments, carbon footprinting, ESG reporting, and corporate sustainability strategy.

Who they work with:
Publicly traded companies, universities, and midsize businesses across North America.

Operational model:
A lean, strategic consultancy that offers deep analysis and execution support tailored to each client’s sustainability goals.

💡 Why they stand out:

📊 Robust ESG capabilities: Delivers custom sustainability reports aligned with GRI, SASB, and TCFD frameworks.

🏅 Award-winning leadership: Founder Josh Prigge was named one of America’s top sustainability leaders by Environmental Leader.

💻 Integrated services: Offers workshops, stakeholder engagement facilitation, and strategic planning under one roof.

Josh Prigge, Principal & Sustainability Consultant of Sustridge

Josh Prigge is a veteran sustainability executive who previously served as Director of Sustainability at Fetzer Vineyards. He founded Sustridge to bring rigorous sustainability frameworks to a wider range of organizations. With credentials including LEED AP and ISSP Sustainability Associate, Josh is widely respected for delivering measurable ESG outcomes and aligning sustainability with business performance.

J. Ottman Consulting

What they do:
Advises companies on green marketing strategies, environmental labeling, eco-innovation, and sustainable product development.

Who they work with:
Global brands, government agencies, and NGOs seeking to communicate environmental claims effectively.

Operational model:
One of the earliest sustainability marketing firms in the U.S., combining industry research with message clarity and compliance expertise.

💡 Why they stand out:

📚 Industry authority: Jacquie Ottman is the author of The New Rules of Green Marketing, a seminal book in the field.

🔍 FTC compliance expertise: Helps clients avoid greenwashing and navigate environmental marketing guidelines.

🧠 Pioneering influence: Worked with Energy Star, USDA Organic, and other leading eco-label initiatives.

Jacquelyn Ottman, Founder & Principal of J. Ottman Consulting

Jacquelyn Ottman is one of the foremost experts in sustainable branding and environmental marketing, with over 30 years of experience. She launched J. Ottman Consulting to help organizations craft truthful, effective green messages grounded in consumer psychology and regulatory compliance. A five-time published author and advisor to the U.S. government on eco-labeling, Jacquie is known for shaping how green products are communicated and trusted.

The Rising Relevance of Sustainability Consulting Expertise

Environmental & sustainability consulting in the USA is gaining momentum as organizations seek guidance on regulation, risk, and real-world impact. These services help businesses navigate environmental compliance, strategic certifications, and long-term ESG initiatives with purpose and precision. From land remediation to climate risk assessment and sustainability communications, these consultancies offer clear frameworks rooted in actionable results. Their value lies in their local insight, science-backed methodologies, and client-verified outcomes. As businesses face increasing scrutiny, these services have never been more vital to maintaining accountability and future-ready operations.

At Digital Reference, radical authenticity means showcasing what truly works—not what simply performs well on paper. It's essential because credibility today depends on verifiable insights, not polished positioning.

Explore more from Digital Reference to discover how top-performing teams and leaders are applying real strategies that move sustainability forward. Dive into related topics across roles and industries:

• Types of Environmental Consultants & Sustainability Experts
  
• The Growing List of Design Professions: Every Creative Career You Should Know
  
• Human Resource Professionals: What Are They and What Do They Do?
  
• Best Performance Management Consulting Services in the USA

Every sustainability journey is different, but the need for verified expertise is constant. That’s why insight must be rooted in results, not positioning. As new standards emerge, teams need a clear, reliable platform that filters for what actually drives accountability. Your next move starts here, with Digital Reference.