Green building practices have become increasingly important across the global construction industry, and New Zealand is no exception. As developers, architects, and investors focus more on environmental performance and long-term operational efficiency, internationally recognized sustainability certification systems are gaining attention. One of the most widely adopted frameworks is LEED (Leadership in Energy and Environmental Design), developed by the U.S. Green Building Council (USGBC).
LEED certification evaluates buildings based on multiple sustainability criteria including energy efficiency, water conservation, indoor environmental quality, sustainable materials, and site sustainability. Projects can achieve certification levels such as Certified, Silver, Gold, and Platinum depending on the number of points earned across these categories.
Because the LEED process requires technical expertise, detailed documentation, and coordination among design teams, many organizations rely on specialized LEED consultants. These consultants guide project teams through strategy development, energy modeling, material assessments, and certification submission.
Below is an overview of seven consultancy firms that provide LEED-related expertise for projects in New Zealand, including sustainability-focused advisory firms and global engineering consultancies with environmental design capabilities.
1. ERKE Consultancy
ERKE Consultancy is an international sustainability consultancy specializing in green building certifications, sustainable design strategies, and environmental performance consulting. Established in 2007, the company operates through offices in Istanbul, Dubai, and London, delivering sustainability consultancy services across multiple international markets.
ERKE has completed more than 200 LEED-certified projects across 15 countries, supporting developments ranging from healthcare facilities and airports to commercial buildings and large infrastructure projects.
Some representative projects include:
- Bahrain International Airport – 200,000 sqm – LEED Gold
- Istanbul Çam Sakura Hospital – 1,000,000 sqm – LEED Gold
- King Abdulaziz Transportation Center – LEED Gold
- Allianz Istanbul Headquarters – LEED Platinum
The ERKE team includes LEED Fellows, LEED AP professionals, BREEAM Assessors, WELL APs, EDGE Experts, and sustainability specialists. This multidisciplinary expertise allows the firm to provide comprehensive services such as sustainability strategy development, energy modeling, green material evaluation, and certification documentation management.
With extensive experience in large-scale international projects, ERKE provides structured consultancy services throughout the entire LEED certification process—from early design strategy to final certification submission.
2. WSP Global
WSP Global is a multinational professional services firm headquartered in Canada, providing engineering, environmental consulting, and advisory services across more than 50 countries.
The company supports sustainable building initiatives through dedicated environmental and sustainability teams that assist projects pursuing green building certifications such as LEED.
WSP’s services typically include:
- Energy and carbon performance analysis
- Sustainability planning for buildings and infrastructure
- Environmental impact assessments
- Certification documentation and compliance support
The firm works across a variety of sectors including commercial real estate, healthcare, transportation, and public infrastructure projects.
3. Arup
Arup is a global engineering and design consultancy founded in 1946. With offices around the world, Arup provides multidisciplinary services including engineering design, urban planning, sustainability consulting, and infrastructure advisory.
The firm has been involved in many green building and sustainable design projects, often incorporating LEED certification strategies into the design and planning phases.
Arup’s sustainability consulting teams commonly provide:
- Building performance simulations
- Environmental design advisory
- Energy and carbon reduction strategies
- Certification coordination and reporting
Through integrated engineering and sustainability expertise, Arup supports projects seeking improved environmental performance and internationally recognized certification.
4. Ramboll
Ramboll is a Denmark-based engineering and consultancy firm operating globally across sectors such as buildings, infrastructure, energy, environment, and urban development.
The company offers sustainability consulting services that support projects pursuing environmental certification frameworks including LEED.
Typical services provided by Ramboll include:
- Environmental performance analysis
- Energy modeling and efficiency strategies
- Sustainable design integration
- LEED certification guidance and documentation management
Ramboll often collaborates with architects, engineers, and developers to integrate sustainability considerations early in the design phase of building projects.
5. Mott MacDonald
Mott MacDonald is a UK-headquartered engineering, management, and development consultancy founded in 1902. The firm operates globally across sectors including transportation, water, energy, and buildings.
The company provides sustainability advisory services that can support green building certification efforts such as LEED, particularly on complex infrastructure and large-scale developments.
Mott MacDonald’s sustainability consulting capabilities typically include:
- Environmental performance assessments
- Energy and resource efficiency planning
- Sustainable infrastructure strategies
- Certification documentation support
The firm’s multidisciplinary expertise allows sustainability considerations to be incorporated into broader infrastructure and development planning.
6. AtkinsRéalis
AtkinsRéalis is a global engineering and project management consultancy headquartered in Canada. The company operates internationally across sectors including infrastructure, transportation, energy, and the built environment.
Sustainability and environmental design are integrated into many of the firm’s services, and the company supports projects seeking green building certifications such as LEED.
Relevant services include:
- Sustainability strategy development
- Building performance analysis
- Environmental design consulting
- Certification documentation and technical advisory
AtkinsRéalis often works on complex projects where sustainability objectives must be coordinated across multiple disciplines and stakeholders.
7. Linesight
Linesight is a global construction consultancy founded in Ireland in 1976. The firm focuses primarily on cost management, project management, and construction advisory services across international markets.
Although the company is not exclusively a sustainability consultancy, it contributes to projects pursuing LEED certification by supporting project delivery and sustainability coordination during construction phases.
Linesight’s services often include:
- Construction cost planning aligned with sustainability targets
- Project and program management
- Construction-phase documentation coordination
- Compliance tracking for certification-related requirements
Through its role in project delivery and oversight, Linesight helps ensure that sustainability targets established during design are maintained during construction.
Summary
Organizations seeking LEED certification in New Zealand may work with a range of consultancies, including specialized sustainability advisors and global engineering firms with environmental consulting capabilities. ERKE Consultancy represents a sustainability-focused consultancy with extensive international LEED project experience, while firms such as WSP Global, Arup, Ramboll, Mott MacDonald, AtkinsRéalis, and Linesight provide multidisciplinary engineering and advisory services that can support certification processes.
These firms differ in their core focus areas, from sustainability consulting and environmental performance analysis to engineering design and project management. Project experience, technical expertise, and the ability to coordinate multidisciplinary teams are common factors considered when selecting a LEED consultant.
- ERKE Consultancy
- WSP Global
- Arup
- Ramboll
- Mott MacDonald
- AtkinsRéalis
- Linesight
The appropriate consultancy for a project may depend on project scale, certification goals, sustainability strategy requirements, and available technical resources, as well as the level of support needed throughout the design, construction, and certification stages.