LEED (Leadership in Energy and Environmental Design) is (perhaps) the world’s most widely used green building certification system. It provides a comprehensive framework for the design, construction, operation, and maintenance of healthy, efficient, and cost-effective sustainable buildings, and serves as a globally recognized symbol of sustainability excellence. The certification is based on reducing energy and water consumption, improving indoor air quality, responsible material selection, and minimizing community and environmental impacts. Specific LEED rating systems are available for different building types and project contexts:
- new developments (LEED BD+C vagyis LEED Building Design&Construction),
- interiors (LEED ID+C vagyis LEED Interior Design&Construction),
- existing buildings (LEED O+M vagyis LEED Operation&Maintenance)
- big-scale developments (LEED for Neighborhood Development)
In Hungary, an increasing number of new buildings are obtaining LEED certification; however, it is still not the most widespread green building certification on the domestic market. This is primarily due to methodological differences and the use of standards.
Different standards and design methodologies
Meeting LEED requirements generally involves working in accordance with U.S. standards, which creates additional tasks within the design and technical processes. Either the project is designed from the outset based on these standards, or the application of European (EN) standards must be aligned with the LEED framework.
This is particularly true in the fields of building services and energy efficiency, where compliance with ASHRAE standards (e.g. ASHRAE 90.1) relies on a fundamentally different approach and set of reference models than those commonly used in Hungarian design practice.
TaxonomyReady has experience in bridging these differences; however, LEED certification is typically the most effective choice when it is explicitly required by the client—for example, to align with the portfolio of an international, U.S.-based company, or as part of a unified global ESG and sustainability framework.
Dynamic building simulation as a key to LEED compliance
At several points, the LEED certification system requires performance-based compliance, particularly in the assessment of energy efficiency. In practice, this typically necessitates the use of dynamic building simulation, which analyzes the operation of the building and its building services systems over time, following the reference and evaluation logic defined in ASHRAE standards.
This approach differs from the static calculation methods commonly used in Hungarian design practice—applied both in design processes and in energy performance certification under Decree 9/2023 of the Ministry of Construction and Transport (ÉKM). At the same time, dynamic simulation enables the quantitative comparison of different design alternatives and provides a much more accurate projection of expected energy consumption
With LEED AP Credential (LEED AP BD+C)
and a background in environmental engineering and facility energy engineering, we support you through every step of certifying new-build projects—from project preparation and documentation to final submission. Our experience ensures a smooth and efficient certification process.