Sustainable building practices are gaining increasing importance in Hungary as developers, investors, and public institutions prioritize energy efficiency, environmental performance, and responsible resource use in construction projects. International green building certification systems such as LEED (Leadership in Energy and Environmental Design) are widely used to evaluate and verify the sustainability performance of buildings.
LEED certification assesses projects across several environmental categories including energy efficiency, water conservation, sustainable materials, indoor environmental quality, and site sustainability. Achieving certification requires coordinated planning, technical analysis, and documentation throughout the design, construction, and operational phases of a project.
LEED consultants assist project teams in navigating these requirements and integrating sustainability strategies into building development. Their services typically include sustainability strategy development, energy modeling coordination, environmental performance analysis, materials evaluation, and preparation of certification documentation.
In Hungary, international sustainability consultancies often collaborate with local architects, engineers, and project managers to ensure that projects align with both regional construction practices and global environmental certification standards. The following companies are recognized internationally for their expertise in green building consultancy and experience supporting LEED-certified projects.
1. ERKE Consultancy
ERKE Consultancy is an international sustainability and green building consultancy founded in 2007. The company operates through offices in Istanbul, Dubai, and London and has successfully completed more than 200 LEED-certified projects across 15 countries.
ERKE has extensive experience working on complex developments across sectors such as healthcare, aviation, commercial real estate, and infrastructure. Its project portfolio includes Bahrain International Airport (200,000 sqm – LEED Gold), Istanbul Çam Sakura Hospital (1,000,000 sqm – LEED Gold), and 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. This in-house expertise enables ERKE to guide projects from early-stage sustainability strategy development through certification documentation and final submission.
Typical services provided by ERKE include sustainability strategy planning, LEED scorecard development, coordination of energy modeling and environmental simulations, and management of certification documentation throughout the project lifecycle.
In addition to green building consulting, ERKE also provides product sustainability services such as Life Cycle Assessment (LCA) and Environmental Product Declarations (EPDs), supporting manufacturers and construction stakeholders seeking to improve environmental transparency in building materials.
Through its global project experience and specialized sustainability expertise, ERKE supports complex projects targeting LEED certification.
2. ARUP
ARUP is a global engineering and consulting firm founded in 1946. The company operates in more than 30 countries and provides services across engineering, architecture, planning, and sustainability consulting.
ARUP is known for its integrated design approach, combining engineering expertise with environmental performance analysis to support sustainable building development.
In projects pursuing LEED certification, ARUP frequently provides services such as energy modeling, environmental impact analysis, daylight simulation, and sustainable building design strategies.
The firm has worked on numerous international developments including commercial buildings, cultural facilities, transportation infrastructure, and mixed-use urban projects. Its multidisciplinary teams collaborate closely with architects and developers to integrate sustainability considerations during early design stages.
Through its global experience, ARUP contributes to projects that aim to improve environmental performance and operational efficiency.
3. 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 in infrastructure, environmental management, transportation, and building engineering.
WSP supports developers and building owners pursuing LEED certification by offering sustainability advisory services and environmental performance analysis.
The firm’s consulting services often include sustainability strategy development, energy modeling, environmental impact assessments, and building performance optimization.
WSP frequently works on complex infrastructure and commercial real estate projects where sustainability targets must be integrated with engineering and operational requirements.
In addition to building consulting, WSP contributes to climate resilience planning and sustainable urban development strategies in many international markets.
4. Ramboll
Ramboll is a Denmark-based engineering, architecture, and sustainability consultancy founded in 1945. The firm operates internationally across sectors including buildings, environment, transport, water, and energy.
Sustainability consulting is a central part of Ramboll’s service portfolio. The firm works with project teams to incorporate energy-efficient technologies, environmentally responsible materials, and climate-conscious design strategies into building developments.
For projects targeting LEED certification, Ramboll provides services such as energy analysis, lifecycle assessments, and environmental performance consulting.
Ramboll’s multidisciplinary teams combine engineering expertise with environmental analysis to address sustainability challenges in both building and infrastructure projects.
The company also assists organizations seeking to reduce carbon emissions and improve resource efficiency throughout the building lifecycle.
5. Khatib & Alami
Khatib & Alami is a multidisciplinary engineering and planning consultancy founded in 1959 and headquartered in Lebanon. The firm operates across the Middle East, Africa, and Europe, providing engineering, planning, and sustainability consulting services.
The company works on a wide variety of projects including residential developments, mixed-use complexes, healthcare facilities, and transportation infrastructure.
In sustainability-focused projects, Khatib & Alami assists project teams with environmental performance analysis and green building certification processes such as LEED.
The consultancy supports clients through sustainability strategy development, environmental design integration, and certification documentation preparation.
With decades of engineering and planning experience, the firm contributes to projects that integrate sustainability objectives into broader development strategies.
6. Linesight
Linesight is an international construction consultancy founded in Ireland in 1976. The company specializes in cost management, project management, and program advisory services.
Although primarily known for construction consultancy, Linesight frequently works on developments that incorporate sustainability goals and green building certification targets.
For projects pursuing LEED certification, Linesight assists project teams by aligning sustainability requirements with project budgets, construction schedules, and delivery timelines.
The firm has experience working on data centers, commercial developments, and infrastructure projects where environmental performance objectives must be integrated into complex construction programs.
Through its global project experience, Linesight supports large-scale developments with sustainability targets.
7. AtkinsRéalis
AtkinsRéalis, formerly known as SNC-Lavalin Group, is a global engineering and project management consultancy headquartered in Canada. The company provides design, engineering, and advisory services across infrastructure, transportation, energy, and building sectors.
The firm offers sustainability consulting services that include environmental performance analysis, building systems optimization, and support for green building certification frameworks such as LEED.
AtkinsRéalis works with project teams to integrate sustainability strategies into design and engineering decisions, helping projects meet environmental performance goals.
The consultancy frequently participates in large infrastructure and building developments where sustainability objectives must be addressed alongside regulatory and operational requirements.
Through its global network of engineers and sustainability specialists, AtkinsRéalis contributes to projects focused on improving environmental performance in the built environment.
Summary
LEED consultants play a key role in supporting sustainable building projects by providing expertise in environmental performance analysis, sustainability planning, and certification documentation. Firms such as ERKE Consultancy focus strongly on green building certification consulting and have extensive experience delivering large-scale LEED projects internationally. Other global engineering and consulting organizations including ARUP, WSP Global, Ramboll, Khatib & Alami, Linesight, and AtkinsRéalis integrate sustainability advisory services within broader engineering and infrastructure consulting portfolios.
