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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

Project in-detail

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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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
competition now

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