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Rooftop Gardens and LVL Structures Enhancing Urban Living in Berlin

Authors:
Mutaz Alabtah, Mariia Khalimon, Batool Alkheder
Rooftop Gardens and LVL Structures Enhancing Urban Living in Berlin

Project in-detail

Utilizing LVL materials and integrating rooftop gardens, the design redefines urban housing in Berlin by adding adaptable living spaces atop existing buildings.
5 key facts about this project
01
Utilizes LVL materials for efficient structural support.
02
Features semi-private rooftop areas for communal use.
03
Located exclusively on flat rooftops of existing buildings.
04
Offers approximately 128 modular configurations for adaptability.
05
Integrates solar panels for energy-efficient living.

The Plus One project addresses the need for more housing in urban areas, specifically in Berlin. It takes advantage of flat rooftops to increase the availability of residential units. The design aims to offer additional living spaces without disrupting the existing urban landscape. By promoting more efficient use of space, this initiative seeks to create a balance between city growth and environmental care.

Modular Design

The concept of Plus One centers around modular units that can be adjusted and resized based on the needs of residents. This design allows for both horizontal and vertical expansion, providing a variety of configurations for living spaces. With about 128 possibilities, each unit can be tailored to suit different lifestyles. This flexibility encourages diverse living arrangements and enhances the overall residential experience.

Utilization of Existing Structures

The project makes effective use of existing flat roofs, which occupy 45% of the built landscape in Berlin. There are approximately 70,000 buildings that could be adapted for this purpose, showcasing the potential for urban expansion without encroaching on green spaces. By repurposing rooftops, Plus One addresses the rising demand for housing while preserving the character of Berlin's neighborhoods and their natural surroundings.

Sustainable Components

To ensure both functionality and sustainability, certain components are integrated into the design. Each modular unit features LVL (Laminated Veneer Lumber) floors with sound insulation, creating comfortable living conditions. LVL timber posts and beams offer strong and lightweight structural support, which helps to speed up construction. In addition to these elements, the LVL roofs include thermal and fire insulation, promoting energy efficiency and safety for residents.

Outdoor Spaces

The project emphasizes outdoor semi-private areas like roof gardens and communal BBQ spaces, encouraging residents to connect with nature and with one another. This design creates opportunities for social gatherings and personal relaxation. Moreover, the inclusion of solar panels reflects a commitment to energy-efficient living. Accessible public spaces encourage community interactions, while access points to roofs and vertical pathways ensure that everyone can move easily between units.

The modular nature of the design allows for easy disassembly and adaptation over time. This focus on sustainability means that the units can be reconfigured as community needs change. Each addition features personalized outdoor spaces that enhance the living experience while integrating natural elements into urban life.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
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