Buildings that really work.
We support architects, developers and industry professionals in the creation of Passivhaus and high-performance buildings - from the initial idea to final certification.
About us
Your trusted partner in design and Passivhaus certification
At Zepassiv we bring together more than a decade of experience in sustainable architecture, building physics and Passivhaus consultancy. We collaborate with architects, engineers and developers to design projects that combine efficiency, comfort and environmental responsibility.
Key points:
Certified Passivhaus consultants and designers
Experience in new construction and refurbishment
Advice in three languages: Spanish, English and Portuguese
Comprehensive support, from concept to certification
Services
Energy and Passivhausconsultancy services
From the design phase to final delivery, Zepassiv offers solutions adapted to each type of project to achieve the highest standards of efficiency and comfort.
Passivhaus Consultancy
Design and energy optimisation to achieve Passivhaus certification.
Building certification
Full support in the process of official certification before accredited bodies.
Airtightness testing
On-site testing and compliance verification against Passivhaus criteria.
Training
Accredited courses for professionals who wish to specialise in Passivhaus design.
ZEPASSIV
Experience, collaboration and proven results
We combine technical knowledge with a collaborative approach to guarantee excellence in every project.
Non-domestic buildings
We have experience in non-residential buildings, including educational facilities, sports facilities, offices and museums.
Active collaboration
We work with developers, builders and public bodies to balance performance, cost and design.
Sustainable commitment
Each project contributes to a more efficient and decarbonised future.
Recognised quality
We collaborate with leading public institutions, developers and architectural practices in the UK, Spain and Portugal.
Testimonials
What they say about us
I am an architect specialising in Passivhaus projects and I have certified almost ten projects nationwide, all of them Zero Energy. As a certifier, Jesús and his team are methodical and excellent when it comes to reviewing calculations, suggesting comments and gathering documentation through their online portal. They provide an audit with full guarantees for the client. Highly recommended.
Bill Haygarth
Passivhaus certificationThey carried out the refurbishment of my house. They took charge of the whole build and carried out the feasibility study. We are delighted with the result, especially nowadays, as it hardly uses any energy.
Amelia Yagüez
PassivhausIt has been a pleasure having Jesús as the certifier of our Passive House Plus home. Thanks to his review of the project and his feedback, we have an incredibly low heating demand, almost unheard of for a house of this type.
Tomas Velasco
Passivhaus certification
Certifications
Spanish
English
Portuguese