Net-zero energy commercial office architects

Here is a curated list of architecture and design firms renowned for their expertise in designing and delivering net-zero energy (NZE) and net-zero carbon commercial and civic office spaces:

• The Miller Hull Partnership
  • Expertise & Background: Widely recognized as a pioneer in regenerative and sustainable architecture. They achieved global acclaim for designing the Bullitt Center in Seattle, which is Living Building Challenge (LBC) certified and operates as a groundbreaking net-zero energy commercial office building.
  • Focus: High-performance commercial buildings, massive on-site solar arrays, advanced rainwater harvesting, and deep passive heating/cooling.architectmagazine.com
• Skidmore, Owings & Merrill (SOM)
  • Expertise & Background: A global architecture giant with a major focus on whole-life carbon tracking, net-zero operational buildings, and mass timber innovations. SOM designed projects like the San Mateo County Office Building Three—noted as a landmark net-zero energy mass timber office and civic structure.
  • Focus: Large-scale commercial office towers, embodied carbon reduction, integrated photovoltaic systems, and high-efficiency structural engineering.sfyimby.com+1
• Gensler
  • Expertise & Background: As one of the largest architectural practices in the world, Gensler has dedicated substantial research (such as their Designing the 2030 Sustainable Office initiatives) to helping corporate developers transition tenant spaces and corporate offices toward net-zero operational and embodied carbon.
  • Focus: Scalable corporate interiors, future-proofing urban office portfolios against global carbon targets (like LETI and NABERS), and sustainable retrofits.gensler.com
• HOK
  • Expertise & Background: A heavy-hitter in sustainable design innovation, HOK has earned numerous AIA COTE (Committee on the Environment) awards and committed early to the AIA 2030 Challenge. They specialize in lowering Energy Use Intensity (EUI) and performing whole-life carbon assessments for complex commercial and institutional workplaces.
  • Focus: Deep carbon reduction, climate-resilient commercial master-planning, and high-performance corporate headquarters.hok.com+2
• Maclay Architects
  • Expertise & Background: A specialized firm focused on deep energy conservation since 1980. Their own historic office building was converted into an all-electric, Zero Net Energy (ZNE) Certified facility through the International Living Future Institute.
  • Focus: Net-zero energy and net-positive energy design tailored to smaller commercial, community, and institutional workspaces.maclayarchitects.com
• archimania
  • Expertise & Background: Based in Memphis, this studio has achieved national recognition for sustainable design, utilizing advanced geothermal heat pump systems, robust solar PV arrays, and rigorous post-occupancy evaluations to guarantee net-zero energy performance in commercial contexts.
  • Focus: Regional climate-responsive architecture, adaptive reuse, and carbon-neutral professional workplaces.gbdmagazine.com

If you have a specific geographic location, square footage , or target certification (like LEED Platinum or ILFI Net Zero) in mind, I can help narrow down which of these firms best matches your project scope.

Architects specializing in net-zero energy commercial office spaces

If you're planning a commercial office building designed to produce as much energy as it consumes annually, I recommend starting with architecture firms that have completed documented net-zero or net-positive energy office projects. These firms have experience with strategies such as high-performance building envelopes, passive heating and cooling, all-electric systems, rooftop solar, and energy-use monitoring.

I've compiled a shortlist based on completed projects and sustainability credentials, primarily in the United States. This is a research shortlist, not a ranking.

Recommended architecture firms

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1. SmithGroup

(Strong direct match)

Best for: Commercial offices, energy-efficient retrofits, and integrated building systems.

Relevant project: DPR Sacramento Zero Net Energy Office, California. This 17,727-square-foot office renovation uses passive design, a high-performance envelope, advanced HVAC, and solar generation. The project was designed to generate more energy than its predicted annual demand.www.aia.org+2

Website:smithgroup.com

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2. ZGF Architects

Best for: High-performance commercial offices, ambitious sustainability certifications, and large-scale development.

Relevant project: PAE Living Building in Portland, Oregon, a 58,000-square-foot commercial office building designed to meet its own energy and water needs. The project has net-zero energy and Living Building credentials.www.aia.org+1

Website:zgf.com

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3. William McDonough + Partners

Best for: Regenerative design, healthy materials, mass timber, and sustainability-led corporate headquarters.

Relevant project: Apex Clean Energy headquarters in Charlottesville, Virginia. The 187,000-square-foot multi-tenant office project lists William McDonough + Partners as design architect, with rooftop and canopy solar designed to support net-positive energy performance.www.alastairreilly.archi

Website:mcdonoughpartners.com

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4. Ashley McGraw Architects

Best for: Mid-sized office projects, cost-conscious sustainable design, and projects in the Northeast.

Relevant project: Sustainable Energy Fund Net-Zero Energy Office Building in Schnecksville, Pennsylvania. This approximately 15,000-square-foot commercial office building was designed to use substantially less energy than comparable buildings and generate more electricity than it consumes.tnward.com+1

Website:ashleymcgraw.com

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5. archimania

Best for: Smaller commercial offices, sustainability-focused workplaces, and integrated energy-conscious design.

Relevant project: Its own 7,225-square-foot Memphis office is certified for both Zero Energy and Zero Carbon under the Living Building Challenge framework. This is particularly relevant if you are planning a smaller office or want a design team with direct experience in a certified project.living-future.org

Website:archimania.com

How I would compare these firms

What to verify before hiring

A firm with strong sustainability credentials is not automatically experienced in delivering a net-zero office within your budget. During interviews, ask for:

• Measured performance: Has a completed office achieved net-zero energy in actual operation, rather than only in energy models?
• Energy modeling: Does the team model annual energy use, solar production, plug loads, and tenant operating hours?
• Engineering integration: Can the architect coordinate mechanical, electrical, solar, storage, and commissioning specialists?
• Cost and certification: Can the team provide lifecycle cost analysis and experience with certifications such as LEED Zero Energy or the Living Building Challenge?
• Relevant experience: Has it delivered projects with similar floor area, climate, occupancy, and leasing arrangements to yours?

For independent project verification, the AIA's Design for Energy resource and ENERGY STAR's commercial new-construction project directory are useful starting points.www.aia.org+1

One question that would help me make this list more useful: Where will your commercial office building be located? If you share the city or region, I can narrow the list to firms that serve that market and have relevant local project experience.

For office buildings, I’d look for architecture firms that go beyond general sustainability and have demonstrated expertise in net-zero energy, high-performance building envelopes, electrification, passive design, and on-site renewable energy.

A key distinction: a net-zero energy building aims to balance its annual energy consumption with energy produced on-site or through an explicitly defined renewable-energy accounting approach. That is different from net-zero carbon, which also considers emissions from materials, construction, and other sources.

I’ll focus on firms with relevant commercial or office-building experience, with an emphasis on practices that could help with a new office development or a major renovation.

Architectural practices worth shortlisting

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1. The Miller Hull Partnership

Seattle, Washington · Commercial and institutional architecture

Best for: ambitious, regenerative office buildings and integrated sustainability.

Miller Hull designed the Bullitt Center — a six-story commercial office building designed to generate as much energy annually as it consumes. It's a strong precedent for integrating energy performance into the building's architecture rather than treating it as an add-on.www.energy.gov+1

Official website ·Bullitt Center project

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2. SmithGroup

Multiple US offices · Corporate and commercial buildings

Best for: net-zero retrofits, all-electric workplaces, and integrated engineering.

SmithGroup worked on DPR Construction's Sacramento office, combining the renovation of an existing building with a mass-timber addition, passive design, a high-performance envelope, and rooftop solar. The project is described as net-positive energy, with PV designed to generate 105% of predicted energy demand.www.aia.org+2

Official website ·Sacramento office case study

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3. Corgan

Dallas, Texas, and other US offices · Corporate campuses

Best for: large corporate offices and multi-building developments.

Corgan's work with Wells Fargo's Las Colinas campus demonstrates how a large office development can target net-positive energy. The design strategy includes energy modeling, efficient equipment, solar, daylight optimization, and self-tinting glazing. The campus comprises two office towers totaling more than 800,000 square feet.www.corgan.com

Official website ·Wells Fargo campus case study

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4. Alfandre Architecture

New Paltz, New York · Energy-efficient commercial buildings

Best for: Passive House principles, smaller offices, and climate-conscious renovation or new construction.

The firm's own 5,400-square-foot office building has achieved LEED Platinum, LEED Zero Energy, and LEED Zero Water certifications, and meets Passive House standards. That makes it a particularly relevant regional practice to investigate for projects in the Hudson Valley and the wider Northeast.alfandre.com

Official website and project case study

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5. EOP Architects

Colorado · High-performance workplace design

Best for: large, energy-efficient office buildings and integrated whole-building design.

EOP Architects is associated with the Research Support Facility at the National Renewable Energy Laboratory in Golden, Colorado. This office project is a major precedent for reducing energy demand through an integrated design process, advanced controls, and efficient building systems.www.energy.gov+1

Official website ·US Department of Energy office case studies

Which firms are the strongest fit?

These are preliminary matches based on documented projects, not a ranking of overall firm quality.

How to evaluate a practice for your project

When interviewing firms, I would ask for three things:

• Measured performance: Has a completed office project actually achieved net-zero energy in operation, or is the claim based only on design modeling?
• Technical integration: Does the architect coordinate early with energy modelers, mechanical engineers, electrical engineers, and renewable-energy specialists?
• Relevant experience: Can the firm show a comparable office building in your climate, at a similar size and budget?

For verification, the US Department of Energy's Zero Energy Building Project Profiles and the AIA's Framework for Design Excellence: Energy are useful starting points.www.aia.org+2

One question that would help me narrow this down: Are you looking for firms primarily in New York City and the Northeast, or are you open to architecture practices anywhere in the US or internationally?

Yes. Several major architecture firms have substantial, documented experience with net-zero-energy, zero-carbon, and highly energy-efficient commercial workplaces. For a commercial office project, I’d put the following firms on a research shortlist:

• gensler.com — Particularly strong in workplace and commercial real estate. Its sustainability practice targets net-zero operational carbon across its portfolio, and projects such as 200 Park in San Jose use all-electric systems designed to support net-zero operational carbon. Gensler also designed The Lighthouse in South San Francisco, which is targeting net-zero energy.Gensler+2
• hok.com — A strong choice for large corporate campuses and office buildings. HOK says it has been carbon-neutral in its own operations since 2022 and is targeting net-zero emissions in projects by 2030. Its Central + Wolfe Silicon Valley office campus was designed to be net-zero-energy ready and achieved LEED Platinum.HOK+1
• som.com — Particularly strong for technically sophisticated large-scale commercial buildings. SOM has committed to net-zero carbon and is targeting net-zero whole-life carbon across its active design work by 2040. Its work includes the net-zero-energy 500 County Center workplace in Redwood City and the proposed Pertamina Energy Tower, designed around a net-zero-energy concept.SOM+2
• perkinswill.com — Extensive high-performance-building and commercial workplace expertise. The firm has made explicit net-zero-carbon commitments covering buildings and office/commercial interiors; its SFO Consolidated Administration Campus was designed to support San Francisco International Airport's zero-net-energy goal.Perkins&Will+1

If your project is in Southern California

I'd pay particular attention to Gensler, HOK, and Perkins&Will, because all have substantial California commercial/workplace experience. Gensler, for example, has both Los Angeles workplace projects and a dedicated Climate Action & Sustainability practice.Gensler+1

One important distinction when interviewing firms: "net-zero energy," "net-zero operational carbon," and "net-zero whole-life carbon" aren't interchangeable. A firm can be excellent at reducing operational energy while having a different approach to embodied carbon, construction materials, and offsets.

If you tell me the approximate size/location of the office building (e.g., 100,000 SF in Orange County), I can narrow this to 5–10 firms with comparable completed projects, including their relevant projects, certifications, and sustainability credentials.