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Rainwater Harvesting Shelters with Reed Roofing in Coastal Community

Authors:
Lupascu Catalina, Stroia Andreea, Marinescu Ionut Alexandru, Domnica Razvan-constantin
Rainwater Harvesting Shelters with Reed Roofing in Coastal Community
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Utilizing rainwater harvesting and sustainable reed roofing, the design offers modular housing solutions that promote self-sufficiency and community resilience in a coastal slum environment.
5 key facts about this project
01
Modular platforms allow for individual customization while maintaining community integrity.
02
Rainwater harvesting systems provide a sustainable water source for households and gardens.
03
Gardens utilize aeroponic systems to maximize water efficiency for food production.
04
Vermicomposting enhances waste management, improving soil quality in urban gardening.
05
Reed roofing offers natural soundproofing and insulation, suitable for coastal conditions.

The design addressing the social and housing issues in the Makako slum of Lagos, Nigeria, offers a modular solution for the unique challenges of living on water. This area, which lacks essential utilities such as water and electricity, requires practical and sustainable habitat strategies. The design honors traditional building methods while providing flexibility for residents to personalize their living environments, enhancing a sense of community.

Design Concept

Modularity is at the heart of the design, allowing families to adapt their platforms to suit their needs. Each module accommodates essential living functions and is arranged around a central courtyard. This layout encourages interaction among residents while ensuring privacy. The design draws inspiration from local architectural traditions, creating a familiar yet functional environment.

Water Management

An effective water management system is crucial in this setting. Rainwater harvesting collects water from the platforms, which is then filtered and stored for household use. This system addresses the scarcity of safe drinking water and is complemented by individual gardens where residents can grow vegetables. Aeroponic systems within the gardens use minimal water, promoting self-sufficiency and food security.

Sustainable Practices

The approach to waste management employs vermicomposting, which uses earthworms to break down organic waste and improve soil quality in gardens. A desalination process, utilizing solar heat for evaporation and condensation, produces additional household water. This ensures a reliable supply for daily needs, including irrigation. Gray water from showers is recycled for toilet use, maximizing water efficiency and reinforcing a commitment to sustainability.

Material Selection

Materials are chosen to fit local practices and environmental conditions. Solid wood provides a strong framework for the structures, ensuring resilience against coastal challenges. Recycled wood in the form of oriented strand board serves as wall coverings, while treated wool offers insulation. The roofing incorporates reed, which enhances soundproofing, and galvanized steel is used for anchoring the structures to withstand the harsh coastal environment. Solid wood beams and planking further support the overall design.

Ventilation is enhanced through horizontal slots in the modules that allow for natural air circulation. This design harnesses ocean breezes, contributing to thermal comfort within the living spaces. The result is a focused effort to create a functional environment that reflects the culture of the community while addressing immediate housing needs.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

The Next House: USA

Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 19 November 2025

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