Embedding Sustainability Into Core Real Estate Operations with Ethan Arbiser
The Green Building Matters Podcast with Charlie Cichetti
Release Date: 04/01/2026
The Green Building Matters Podcast with Charlie Cichetti
π― The Green Impact Report Quick take: If you need to transform sustainability from an isolated department into a core business driver, this episode delivers the blueprint. Ethan Arbiser shows how to embed sustainability into daily real estate operations using resource optimization, AI, and high-visibility engagement strategies. π Meet Your Fellow Sustainability Champion Ethan Arbiser is a Senior Manager of Energy & Sustainability at CBRE, bringing a unique blend of environmental science, analytics, carbon accounting, and built-environment project experience. An Atlanta...
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π£ The Green Impact Report Quick take: This episode is a masterclass in modern construction sustainability. Nicholas Ndah breaks down how eliminating waste, rethinking materials, and simplifying project execution can radically improve both environmental impact and long-term building performance. πββοΈ Meet Your Fellow Sustainability Champion Nicholas Ndah is a commercial interiors and construction leader with deep experience spanning residential, industrial, and large-scale commercial projects. As head of the Architectural Solutions division at McCoy Rockford, he...
info_outlineThe Green Building Matters Podcast with Charlie Cichetti
π£ The Green Impact Report Quick take: LEED v5 is βaround the corner,β and Helen Rubinstein (Director of Sustainability at Cosentini Associates) explains whatβs changing β and how sustainability teams can get ahead by integrating earlier, speaking the construction teamβs language, and leaning into decarbonization mandates without losing the bigger regenerative vision. π Meet Your Fellow Sustainability Champion Helen is an experienced Sustainability Consultant that joined Cosentini Associates in 2010. She holds a Master of Science in Environmental Management Systems...
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π The Green Impact Report Quick take: From Buenos Aires to Papua New Guinea, LEED Fellow and architect Andres Schwarz shows how to turn certifications, commissioning, and culture into long-term, resilient green performance β not just plaques on the wall. π« Meet Your Fellow Sustainability Champion Andres is a sustainability professional, serving as a sustainability advisor, university educator, principal at NRG-AR, and co-founder of Green Certification Consultants. Since 2007, he has certified over 100 Green Building projects across 12 countries as a sustainability and...
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𧨠The Green Impact Report Quick take: What if you could eliminate 30% of wasted facility capital spend without sending a single person on-site? Austin Rabine, CEO of Site Technologies, breaks down how AI-powered drone data is transforming exterior inspections, cutting costs, and driving sustainability at scale. π Meet Your Fellow Sustainability Champion Austin Rabine is the co-founder and CEO of Site Technologies, a company rethinking how facility owners manage building exteriors. Austin is an entrepreneurial leader working to drive technology and innovation into old...
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π£ The Green Impact Report Quick take: LEED Fellow Theresa Lehman is back on the podcast! Since her first episode in 2021, sheβs doubled down on big-impact projects β like delivering one of the largest net-zero middle schools in the U.S. and advising on next-gen data center sustainability. If you're navigating LEED v5, IRA funding, or how to scale sustainability within a large firm β this episode is your roadmap. πββοΈ Meet Your Fellow Sustainability Champion Theresa Lehman is one of the original LEED Fellows and a driving force in the Green Building movement across...
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𧨠The Green Impact Report Quick take: From boutique eco-hotels to 540-hectare industrial parks, Juan Carlos Valenzuela CastaΓ±eda is helping Guatemala go green β by proving that regenerative, resilient, and human-centered design isnβt just possible in Central America, itβs thriving. Meet Your Fellow Sustainability Champion Juan Carlos Valenzuela CastaΓ±eda is a LEED Fellow and architect based in Guatemala City, where he co-leads a family-run firm with his sister. Their practice has evolved from traditional architecture to sustainability consulting, now focused 80% on...
info_outlineThe Green Building Matters Podcast with Charlie Cichetti
π― The Green Impact Report Quick take: Umesh Atre shares a powerful journey from India to becoming a LEED Fellow and a sustainability leader at Parkhill. In this episode, he dives into how metrics-driven design, embodied carbon strategies, and infrastructure-focused sustainability are changing the green building landscape β especially in challenging regions like West Texas. πββοΈ Meet Your Fellow Sustainability Champion Umesh Atre, LEED Fellow, WELL AP, Fitwel Ambassador, is a seasoned sustainability professional with over two decades of experience working across various...
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ποΈ The Green Impact Report Quick take: Zero carbon isnβt a tech problem anymore β itβs a business model problem. Fin MacDonald breaks down how developers can hit LEED Platinum + Zero Carbon goals by shifting costs smartly, partnering creatively, and treating finance like an ally instead of a villain. π Meet Your Fellow Sustainability Champion Fin MacDonald is a newly minted LEED Fellow and zero-carbon strategist based in Ontario, Canada. He leads zero-carbon advisory work at Urban Equation (alongside Windmill Development Group), helping developers build the business...
info_outlineThe Green Building Matters Podcast with Charlie Cichetti
𧨠The Green Impact Report Quick take: Alicia Silva Villanueva is back! In this powerful follow-up episode, the renowned sustainability leader from Mexico shares lessons from greening iconic places like Estadio Azteca for the FIFA World Cup, redefining resilience in hospitality, and writing the playbook to inspire the next generation of changemakers. π Meet Your Fellow Sustainability Champion Alicia Silva Villanueva is a LEED Fellow and founder of a Mexico City-based consultancy that's been shaping the future of green buildings in Latin America for over 17 years. With 120+ LEED...
info_outlineπ― The Green Impact Report
Quick take:
If you need to transform sustainability from an isolated department into a core business driver, this episode delivers the blueprint. Ethan Arbiser shows how to embed sustainability into daily real estate operations using resource optimization, AI, and high-visibility engagement strategies.
π Meet Your Fellow Sustainability Champion
Ethan Arbiser is a Senior Manager of Energy & Sustainability at CBRE, bringing a unique blend of environmental science, analytics, carbon accounting, and built-environment project experience.
An Atlanta native and two-time Emory University graduate, Ethanβs career spans teaching, software-based energy analytics, corporate carbon accounting at Cox Enterprises, and now leading sustainability integration across major real estate portfolios.
He focuses on embedding sustainability into core facilities, workplace, engineering, and leasing functions through data, AI, and impactful employee engagement initiatives.

π± Breaking Ground on Better Building
In this episode, Ethan Arbiser revolutionizes traditional real estate operations with a sustainability-first mindset.
π§ Key Insight #1: Sustainability Evolves When It Focuses on Resource Optimization
- The Challenge: Sustainability programs were historically driven by voluntary reporting and altruistic goals, often disconnected from financial priorities.
- The Solution: Position sustainability as resource optimization β reducing operating costs, lowering risk, and improving efficiency across all real estate functions.
- ROI: Increased financial savings from smarter utility and operational decision-making, Stronger cross-functional alignment, Triple-bottom-line benefits (people, planet, profit).
π― Key Insight #2: AI and Data Intelligence Are Reshaping Real Estate Decision-Making
- The Challenge: Teams lack accurate forecasting tools and real-time insights to manage energy, utilities, and contracts.
- The Solution: Deploy advanced AI tools for utility budgeting, forecasting, contract evaluation, and building intelligence β creating razor-sharp accuracy and smarter planning.
- ROI: Greater confidence for clients facing volatile utility markets, Significant operational savings, Accelerated decarbonization pathways.
𧨠Key Insight #3: Waste Engagement Is the Most Visible Sustainability Lever
- The Challenge: Employees rarely see or interact with energy or carbon reduction efforts, limiting awareness and cultural adoption.
- The Solution: Use waste sorting, gamification, and employee engagement technology to make sustainability visible and personal in the workplace.
- ROI: Higher landfill diversion rates, Stronger culture of sustainability across teams, Low capital investment with immediate behavioral impact.
ποΈ Sustainable Soundbite
"Chaos brings opportunity β and sustainability thrives when you embed it into the core functions of real estate."
β Ethan Arbiser
π§ββοΈ Your Green Building Action Plan
1. This Week: Identify one core real estate function (FM, engineering, workplace) where sustainability can plug in immediately.
2. This Quarter: Pilot an AI-assisted workflow to improve forecasting, waste engagement, or energy performance.
3. This Year: Build a cross-functional sustainability roadmap that unites decarbonization, resilience, and workplace experience.
π Connect & Learn More
πΏ Access full episode resources: https://gbes.com/podcast/
π Read the transcript here
π©π»βπ» Connect with Ethan Arbiser:
- Website: https://www.cbre.com/
- LinkedIn: https://www.linkedin.com/in/ethan-arbiser/
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