”It is essential to create spaces that adapt well to both users and the environment, because a building that is functional and sustainable is better than one that is only functional or only sustainable.
Enikő KluhaHead of Sustainability, BREEAM AP & Assessor
For the success of any development, it is essential to represent our clients’ professional and economic interests at the highest possible standard. This requires close cooperation with investors and operators to develop well-considered, long-term and genuinely sustainable solutions.
At Realiscon, BREEAM / LEED assessment is not treated as a stand-alone label to be achieved, but as an integral part of the development process. From the concept phase onwards, it supports the identification of solutions that are viable over the long term.
Our environmental consultancy services align technical and economic objectives in a way that serves the interests of the Investor, the operator and the end users alike.
Throughout the certification process, we guide the project from registration through documentation preparation, design and construction coordination, to final certification. At every stage, we ensure that the building not only meets the requirements, but exceeds expectations.
Sustainability objectives are not an additional task, but a natural part of project management.
Certification frameworks provide a structured methodology and professional support that enables, among others, the optimisation of energy, water and material use. This results in reduced operational costs and improved market positioning, while a certified green building also contributes to environmentally and socially responsible operation.
Comprehensive expertise and up-to-date knowledge
To effectively support sustainability ambitions and certification processes, we continuously update and expand our professional knowledge.
In addition to extensive experience in certification procedures, our team possesses a broad interdisciplinary background in related fields
- development of zero-carbon strategies,
- preparation of certification feasibility studies,
- cost estimation of best practices, return on investment estimation,
- climate and flood risk assessment,
- project-specific adaptation of sustainable solutions,
- Life-cycle Cost (LCC) and Life-Cycle Assessment (LCA),
- support for sustainable procurement and operational processes.
This expertise enables us to provide real decision support to our clients – not only in achieving certification, but in improving the overall sustainability performance of the project.

Qualified professionals – high-quality delivery
Members of the Realiscon Green Team are internationally accredited sustainability consultants with proven practical experience. Our qualifications include:
- BREEAM Assessor
- BREEAM Advisory Professional
- LEED Green Associate
- LEED AP
- LCA and LCC expert
- EU Taxonomy consultant and verifier
Through BREEAM and LEED assessment frameworks, we integrate sustainability considerations into the planning, construction and operation phases of real estate developments. As a result, projects can deliver higher economic, environmental and social value.
Our certification and consulting licenses
- BREEAM In-Use International (BiU)
- BREEAM International New Construction (BREEAM NC)
- BREEAM International Non-Domestic Refurbishment and Fit-Out (BREEAM RFO)
- BREEAM Communities
- BREEAM Advisory Professional
- LEED Building Design and Construction (LEED BD+C)
- EU Taxonomy
Project management-based approach
In our work as sustainability consultants and BREEAM / LEED assessors, we draw on our project management experience, as the preparation, planning and implementation monitoring of investment projects are part of our day-to-day work.
In addition, we dedicate time, decisiveness, flexibility and the technical expertise required to understand the details and successfully manage the process. By staying up to date with relevant green technologies and market solutions, we can effectively support Investors in delivering developments that are both sustainable and financially viable.


