Zepassiv is an international engineering company specialised in the Passivhaus standard that assists architects, engineers, developers, builders and public administrations in the design, optimisation, execution and certification of energy efficient buildings.
Backed by two decades of experience in sustainable architecture and building physics, we act as your strategic technical partner throughout the project cycle, from initial economic feasibility studies to final audit and certification.
Our approach goes beyond traditional consultancy: we actively integrate into design teams and on-site implementation to ensure real and measurable results.
What we offer
We specialise in buildings Passivhaus and Net Zero. We rigorously apply building physics, with a practical vision of the construction site, adapting the requirements of the standard to the particularities of each climate and facilitating its implementation.
Passivhaus design and optimisation. Technical and economic feasibility studies.
Energy modelling in designPH and PHPP 10. Dynamic time study with IES VE or WUFI.
Official Passivhaus, EnerPHit and Low Energy Building certification.
Work control. Airtightness tests, acoustic measurements, thermography and smoke technology.
We help you pass the Blowerdoor test, 100% guaranteed.
Official training in Passivhaus and for Blowerdoor technicians.
Methodology
We are incorporated into the work structure from the conceptual phase. We assign a specific technical consultant to each project to ensure the viability of the solutions and an immediate response to any design or execution challenge on site.
We understand the Passivhaus standard as the physics of applied construction, not as a mere stamp or administrative formality. We prioritise technical excellence and comfort, always ensuring solutions with the best cost-benefit ratio:
Guaranteed thermal and acoustic comfort
Healthy pathogen-free environments
Long-term resilience and durability
We manage the entire project cycle, from the conceptual phase to final certification. We apply a transversal vision that integrates energy efficiency with the structure, installations, architectural design and execution. Thanks to an extensive network of partners, we manage the complete cycle.
We
Professionals with real international experience in Passivhaus.
Director
CEO of Zepassiv. PhD in Civil Engineering (UK), Master in Wood Engineering (UK / NZ). Forestry Engineer (ES) and Technical Engineer in agri-food industries (ES), trainer, consultant and Passivhaus certifier. Level II expert in Blower Door testing.
Jesús Menéndez is an international reference figure in the sustainable construction sector, standing out for his unusually complete technical profile that integrates two critical disciplines: structural wood engineering and building physics.
Senior Consultant
Architect, trainer, consultant and Passivhaus certifier.
Roberto has a decade of international experience in Passivhaus projects.
Within Zepassiv, he specialises in auditing non-residential projects, in particular in the education and hotel sectors.
He is accredited as a Blowerdoor test technician.
Senior Consultant
Architect, MArch in Architecture and Sustainability.
Sibila is a designer and PHPP Expert with a strong focus on auditing large-scale residential projects at the design stage.
Expert in 2D and 3D construction detail simulations.
Passivhaus Consultant
Civil Engineer, MSc Architectural Engineering Environmental Design.
Reshma is an accredited Passivhaus Designer and specialises in audits of single-family houses at the design stage.
It is also responsible for the management of training courses.
Passivhaus Consultant
Architect, MSc Sustainable Architecture.
Samin is a Passivhaus construction technician and specialises in the audit and coordination of non-residential and large-scale projects in the construction phase.
Passivhaus Consultant
Architect, MSc Sustainable Architecture.
Christian is an accredited Passivhaus designer, specialising in bioclimatic architecture and dynamic building simulation.
Wood structure modeller
Higher technician in building projects.
Jesús Escobar is also a Passivhaus consultant and Passivhaus project execution technician, with a strong specialisation in timber construction.
Design and communication
Bachelor of Arts (BA Hons) in Design and Applied Arts.
Claire is in charge of design and social media communication, as well as the administrative management of Zepassiv.
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