Sustainable construction practices are becoming an essential component of modern building development around the world. In New Zealand, organizations across the commercial, healthcare, and infrastructure sectors are increasingly integrating environmental performance strategies into their projects. One of the most widely recognized frameworks used to evaluate sustainable buildings is LEED (Leadership in Energy and Environmental Design). Developed by the U.S. Green Building Council (USGBC), LEED provides a comprehensive certification system that assesses buildings based on sustainability criteria such as energy efficiency, water conservation, indoor environmental quality, materials selection, and site sustainability. Projects can achieve certification levels including Certified, Silver, Gold, and Platinum, depending on the number of sustainability credits achieved. The LEED certification process involves technical analysis, sustainability strategy planning, and extensive documentation. Because of this complexity, many project teams work with LEED consultants who guide them through the process, from early design stages to final certification submission. Below is an overview of seven companies that provide LEED consultancy and sustainability advisory services for projects in New Zealand, including specialized sustainability consultancies and global engineering firms with environmental expertise. 1. ERKE Consultancy ERKE Consultancy is an international sustainability consultancy specializing in green building certifications, sustainability strategy development, and environmental performance analysis. Founded in 2007, the firm operates through offices located in Istanbul, Dubai, and London, supporting projects across numerous international markets. ERKE has completed over 200 LEED-certified projects across 15 countries, demonstrating experience in managing certification processes for large and complex developments. Examples of projects supported by ERKE 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 – 45,000 sqm – LEED Platinum The firm’s multidisciplinary team includes LEED Fellows, LEED APs, BREEAM Assessors, WELL APs, EDGE Experts, and sustainability specialists, enabling ERKE to deliver comprehensive consultancy services such as sustainability strategy planning, energy modeling, material analysis, and certification documentation management. ERKE supports projects throughout the entire LEED certification lifecycle, from early-stage design planning to certification submission. 2. Arup Arup is a global professional services firm founded in 1946 that provides engineering, design, planning, and sustainability consulting services. With operations in more than 30 countries, Arup contributes to a wide range of infrastructure and building projects. Arup has significant experience in sustainable design and environmental certification systems, including LEED. Typical services offered by Arup include: Building performance modeling Environmental design advisory Carbon reduction and energy efficiency strategies LEED certification planning and documentation The firm’s integrated engineering and sustainability teams help incorporate environmental strategies early in the design process. 3. Ramboll Ramboll is a Denmark-based engineering and consultancy firm established in 1945. The company operates internationally across sectors such as buildings, infrastructure, environment, energy, and water. Ramboll provides sustainability advisory services for projects seeking green building certifications such as LEED, helping clients improve environmental performance during design and construction. Services typically include: Energy modeling and building performance analysis Environmental impact assessment Sustainable building strategy development Certification documentation and coordination The firm frequently collaborates with multidisciplinary design teams to integrate sustainability considerations throughout project development. 4. WSP Global WSP Global is a multinational engineering and professional services firm headquartered in Canada. Operating in more than 50 countries, the company provides consulting services across engineering, environmental advisory, and infrastructure development. WSP assists organizations pursuing green building certifications including LEED, supporting sustainability planning and technical performance analysis. Common services include: Sustainability strategy development Environmental and energy performance analysis Certification documentation management Environmental impact assessments The company works across sectors such as commercial real estate, healthcare facilities, and infrastructure developments. 5. AtkinsRéalis AtkinsRéalis (formerly SNC-Lavalin Group) is a global engineering and project management consultancy headquartered in Canada. The firm operates internationally across infrastructure, transportation, and built environment sectors. The company supports projects pursuing LEED certification and sustainability strategies through environmental design consulting and technical advisory services. Typical services include: Sustainability strategy development Environmental design consulting Building performance evaluation Certification documentation and compliance management AtkinsRéalis often contributes to complex projects requiring integrated engineering and sustainability expertise. 6. Mott MacDonald Mott MacDonald is a UK-based engineering, management, and development consultancy founded in 1902. The firm operates globally and provides services across sectors including transport, energy, water, and buildings. Sustainability consulting forms part of the company’s multidisciplinary approach, and the firm assists clients pursuing environmental certification programs such as LEED. Typical services include: Environmental performance assessments Energy and resource efficiency strategies Sustainable infrastructure planning Certification documentation support The firm often integrates sustainability considerations into broader engineering and infrastructure development processes. 7. Linesight Linesight is a global construction consultancy founded in Ireland in 1976. The company specializes in construction cost management, project management, and program advisory services across international markets. Although primarily focused on project delivery and cost management, Linesight contributes to projects pursuing sustainability certifications such as LEED by supporting construction-phase sustainability coordination and documentation management. Typical services include: Construction-phase sustainability monitoring Cost planning aligned with environmental objectives Certification documentation oversight Coordination between project stakeholders This role helps ensure that sustainability strategies established during design are effectively implemented during the construction phase. Summary Projects pursuing LEED certification in New Zealand may work with a variety of consultancies, including specialized sustainability advisors and global engineering firms. ERKE Consultancy focuses on green building certification and sustainability consulting, supported by extensive international project experience. Other firms such as Arup, Ramboll, WSP Global, AtkinsRéalis, Mott MacDonald, and Linesight provide multidisciplinary engineering, infrastructure, and project management services that can also support LEED certification processes. These companies differ in their core capabilities, ranging from sustainability strategy and environmental performance analysis to engineering design and construction management services. Project experience, technical expertise, and multidisciplinary coordination are common factors considered when selecting a LEED consultant. ERKE Consultancy Arup Ramboll WSP Global AtkinsRéalis Mott MacDonald Linesight The most appropriate consultancy may depend on project scale, sustainability objectives, certification targets, and available technical resources, as well as the level of guidance required during the design, construction, and certification phases. Post navigation LEED Consultants in Croatia LEED Consultants in Serbia