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Curved Polycarbonate Roof and Rainwater Management in a Compact Microhome

Authors:
Kelvin Chan, Gerlene Barcelon
Curved Polycarbonate Roof and Rainwater Management in a Compact Microhome
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A curved polycarbonate roof channels rainwater for reuse, while modular zoning allows for flexible living arrangements in this compact microhome designed for young professionals.
5 key facts about this project
01
Curved roof design allows for effective rainwater collection.
02
Modular zoning provides flexibility in space arrangement.
03
Translucent polycarbonate roof enhances natural daylighting.
04
Integrated photovoltaic panels support off-grid energy use.
05
Compact living area of 23.95 square meters maximizes efficiency.

A microhome designed for young professionals addresses the urgent need for affordable housing in urban areas, particularly in places like Santa Cruz, California. With a compact size of 23.95 square meters, it combines all necessary living spaces—such as a living/working area, kitchen, toilet and bath, and a bedroom—into a single layout that maximizes efficiency and comfort.

Design Features

The design begins with a rectangular base that transitions into a streamlined form, which enhances the flow of movement within the space. One notable aspect is the curved roof, which serves a functional purpose by managing rainwater. This design allows for water collection to be reused for irrigation and toilet flushing, showcasing a commitment to sustainable practices.

Natural Light and Ventilation

Natural light and air circulation are important in this microhome. Openings at both ends enhance airflow, while a window helps to release warm air. This focus on natural elements reduces the need for artificial lighting and mechanical cooling systems, creating an energy-efficient living environment.

Modular Construction and Adaptability

The microhome uses a modular approach to construction, allowing flexibility in how spaces are arranged. Fixed elements like the entrance and bedroom ensure optimal layout while enabling adjustments to meet individual needs. This adaptability caters to young professionals who may have varying lifestyle requirements.

Material and Sustainability

Environmental responsibility is emphasized through careful material selection. The roof is made of translucent polycarbonate, which provides thermal efficiency and ample daylight. Photovoltaic panels are incorporated to support energy needs. Inside, drywall and wood cladding contribute to insulation and offer a warm aesthetic.

The design features a curved roof that draws attention and blends functionality with modern living. This detail highlights not only architectural intent but also the effort to provide a practical and enjoyable living space for its residents.

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Kingspan MICROHOME 2026: Building Less to Create More

`
Competition organisers

The Kingspan MICROHOME 2026 competition invites architects and designers worldwide to rethink small-scale living by creating an off-grid, modular micro dwelling under 25 m². Now in its 11th edition, the contest emphasizes sustainable, innovative, and human-centered design that demonstrates how compact living can have a big impact.

With a €100,000 prize fund, entries will be evaluated for originality, efficiency, and their response to contemporary environmental and social challenges. The competition is open to everyone, with submissions allowed individually or in teams of up to four. Registration closes on 30 September 2026, and winners will be announced on 15 December 2026.

By celebrating creativity within strict limits, MICROHOME 2026 continues to push the boundaries of compact architecture and sustainable living.

MICROHOME 2026

Design a new concept of small-scale home and share a prize fund of 100,000€

100,000 € Prize Fund / Kingpsan Edition #11 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 September 2026

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