RoofUz is a Berlin-based platform specialising in sustainable roof renovation and rooftop extensions, with a focus on turning underused roofs into new living space and contributing to urban densification. RoofUz positions itself as an international, interdisciplinary team with expertise in construction, architecture, design and digitalisation, working at the intersection of housing, climate action and Smart City development.12
The company’s core activity is the serial addition of new storeys to existing buildings using prefabricated rooftop modules, primarily in timber construction.1369 RoofUz offers an end-to-end service for building owners who want to create additional living units on their roofs but lack time or technical expertise. The platform coordinates planning, prefabrication and on-site installation, aiming to make the process faster, more predictable and less costly than conventional construction.13 Its model relies on a pool of specialised partner firms, with modules produced in factories and then installed on site to reduce construction time and disruption.136
In addition to rooftop additions, RoofUz provides related services such as energy-efficient roof renovation, flat roof upgrading, and integrated modernisation “from the roof down,” using the added unit to help finance further improvements to the building’s energy performance.138 Digital tools such as a roof check and roof scan support feasibility assessments and planning for owners and real estate stakeholders.47
RoofUz is explicitly committed to ESG-aligned sustainability, optimising its activities for environmental, social and economic benefits, and promoting timber construction as a climate-friendly way to create new housing in dense urban environments.2910 Its primary geographic focus is currently Berlin’s uninhabited rooftops, with a broader stated ambition to support sustainable, smart cities.12