ECOTent: Sustainable Architecture Reimagines the Urban Balcony in Shanghai

ECOTent explores this possibility through a post-pandemic approach to sustainable architecture, transforming conventional residential balconies into adaptable spaces for growing, connecting, and living.

Designed by Daniel Young, Zhiyu Feng, and Ge Tian, the project was recognized as an Institutional Excellence Award entry of Retro-Fit 2020.

Rather than proposing the demolition or replacement of an existing residential building, ECOTent works with what is already there. Its modular system attaches to existing balconies, creating a new inhabitable layer across the facade. In doing so, the proposal positions retrofit as an opportunity to rethink domestic life, food production, social interaction, and the relationship between architecture and nature.

A Post-Pandemic Question for Urban Housing

ECOTent is located conceptually within a dense residential context on Dongchang Road in Pudong, Shanghai, where apartment buildings accommodate a diverse population including long-term elderly residents and younger tenants.

The project responds directly to concerns that became particularly visible during periods of pandemic isolation.

When residents spend extended periods inside their homes, questions of health and domestic resilience become increasingly important. Where does food come from? Can people maintain social contact without compromising privacy? Can small apartments offer meaningful access to greenery and outdoor environments? Can existing housing stock adapt to unexpected changes in everyday life?

ECOTent treats these questions as architectural problems.

Instead of seeing the balcony simply as a place for drying clothes, adding planters, or storing household items, the designers reinterpret it as an active extension of the home.

The result is a framework where sustainable architecture becomes part of everyday domestic life rather than an isolated technological intervention.

A Modular System for Existing Buildings

At the heart of ECOTent is a simple modular strategy.

The drawings distinguish between a Space Module and a Green Module. Their angular geometries can be combined, repeated, and connected across neighboring balconies. As the modules multiply, they establish a recognizable architectural system while allowing different residents to use their balconies differently.

The Space Module provides an inhabitable enclosure. It can become a sheltered place for sitting, resting, observing the garden, or interacting with neighbors.

The Green Module introduces planting and cultivation into the system.

When neighboring units connect their green components, individual balconies begin to form a larger vegetated network across the building facade.

This modular logic is significant because the project does not demand that every resident use an identical balcony configuration. Instead, the architecture can respond to individual lifestyles while remaining part of a coherent collective system.

Modularity therefore becomes both a construction strategy and a social strategy.

Comfort as Part of Sustainable Architecture

ECOTent organizes its proposal around three interconnected ideas: Comfort, Grow, and Connect.

The first is comfort.

Balconies often occupy an ambiguous position between private interior space and the exposed public environment. ECOTent attempts to make this threshold more inhabitable by partially enclosing the balcony using lightweight geometric modules.

These structures can create protected areas where residents can spend more time outside their apartments while remaining physically connected to home.

The visualizations show occupants sitting, relaxing, observing plants, and moving through these balcony environments. Rather than treating greenery as decoration, the design places vegetation directly within everyday living space.

The result is a form of sustainable architecture focused not only on environmental performance but also on human well-being, privacy, visual connection, and quality of life.

Turning Balconies Into Productive Landscapes

Growing food is one of ECOTent's defining functions.

Integrated planting surfaces transform the balcony into a compact productive garden where residents can cultivate food close to where they live.

Vertical and inclined planting areas make use of surfaces that might otherwise remain inactive. Instead of requiring large horizontal gardens, the proposal works with the limited dimensions of existing apartment balconies.

Residents can cultivate their own plants while also seeing what neighbors are growing.

This changes the facade dramatically.

The conventional residential elevation becomes a layered landscape of vegetation, transparent enclosures, inhabited terraces, and productive gardens.

The building is no longer simply wrapped by a static external wall. Its appearance evolves according to occupation, planting, growth, harvesting, and seasonal change.

In this sense, the facade becomes a visible record of community activity.

From Private Gardening to Urban Food Networks

ECOTent also imagines food production as a shared activity.

The project proposes that food grown on balconies could be harvested, exchanged, or traded within the community. Illustrations show residents cultivating produce and interacting around small-scale food exchange.

This expands the role of urban farming beyond individual self-sufficiency.

A resident may grow one type of plant while a neighbor grows another. Produce can circulate between households, allowing the architecture to support a small network of local exchange.

The images even explore delivery systems, including drone-assisted distribution, suggesting how fresh goods could move between residents or connect balcony agriculture with broader urban logistics.

This speculative layer gives the project a wider urban dimension.

The balcony becomes not simply a private garden but part of a decentralized infrastructure for food, exchange, and community resilience.

Connecting Residents Without Eliminating Privacy

The third principle, Connect, addresses one of the central contradictions of dense urban housing.

Residents may want stronger connections with neighbors while simultaneously needing privacy within their homes.

ECOTent attempts to negotiate both requirements.

Its combination of transparent surfaces, structural frames, planting, and enclosed spaces creates different levels of visibility. Vegetation can remain visible from the street, giving the building a more open and active relationship with its surroundings, while the geometry of the enclosure provides residents with greater control over personal space.

This balance is particularly important in high-density residential architecture, where social proximity does not automatically produce meaningful community interaction.

By creating spaces in which residents can garden, rest, exchange food, observe activity, or communicate with neighbors, ECOTent introduces opportunities for informal encounters without requiring residents to surrender the privacy of their apartments.

A Living Facade for Existing Housing

One of the strongest visual consequences of ECOTent is the transformation of the building elevation.

Repeated triangular modules project from the existing balconies in different colors and configurations. Greenery fills the spaces between them, creating a rhythm of planted and inhabited volumes across the facade.

The intervention gives the existing residential block an entirely new identity without erasing its underlying structure.

This is where ECOTent connects particularly well with the principles of sustainable architecture.

Rather than assuming sustainability requires constructing an entirely new building, the project considers how existing housing can be upgraded through targeted architectural additions.

The existing building becomes the structural base for a new environmental and social layer.

Such an approach highlights the potential of retrofit architecture in cities where enormous quantities of residential building stock already exist.

Architecture That Can Change With Its Residents

The modular configuration also means that the facade does not need to remain permanently fixed.

Different modules can theoretically respond to different household requirements. One resident might prioritize gardening. Another may want a more enclosed outdoor room. Others may use their balcony primarily for social interaction or observation.

Across many apartments, those individual decisions generate collective architectural variation.

The facade therefore becomes a system rather than a singular formal composition.

Its identity comes from a shared set of rules, modules, and connections rather than from every balcony looking exactly the same.

This balance between repetition and personalization allows ECOTent to imagine sustainable architecture at both the individual and building scales.

Constructive Simplicity and Questions of Material Durability

The competition jury recognized both the conceptual clarity of ECOTent and some of the practical questions that would need further development.

Juror Ana da Franca, Architect and Founder of Franca Arquitectura in Portugal, highlighted the proposal's combination of modular design and social intent:

“Original and curious concept, which demonstrates constructive simplicity. However, the viability and durability of the materials are questioned. Social concern and a clear presentation are highlighted, with emphasis on modularity.”

Her assessment identifies an important tension within the project.

ECOTent's visual and structural simplicity helps make the retrofit strategy understandable and potentially repeatable. At the same time, moving from a conceptual modular system to real-world implementation would require rigorous investigation into material lifespan, weather resistance, structural connections, maintenance, drainage, planting loads, and long-term performance.

These considerations are especially relevant for sustainable architecture. Environmental ambition must eventually be supported by durable construction systems if an intervention is expected to remain effective over time.

A Balcony System With Broader Urban Potential

Juror Pedro de Almeida Grilo, Founder and Architecture Director of CoDA arquitetos in Brazil, emphasized the wider applicability of the concept:

“Great sollution! Feels like this balconies could exist in any city.”

That observation captures one of ECOTent's most compelling characteristics.

Although the proposal is situated in Shanghai, its fundamental problem is not unique to Shanghai.

Apartment balconies appear across dense cities around the world. Many are small, underused, exposed, or disconnected from broader ideas of sustainability and community infrastructure.

ECOTent proposes a system that could potentially be adapted rather than simply copied.

Different cities would require different materials, planting species, enclosure strategies, climatic responses, structural solutions, and cultural interpretations. Yet the underlying principle remains relevant: an existing balcony can become a platform for ecological and social retrofit.

From Balcony to Micro-Infrastructure

ECOTent ultimately asks architecture to reconsider one of the smallest elements of the residential building.

A balcony may appear insignificant when compared with the scale of a tower, housing block, neighborhood, or city. But multiplied across hundreds or thousands of apartments, balconies represent a substantial amount of potentially productive space.

ECOTent transforms that overlooked surface into a form of micro-infrastructure.

It can support planting.

It can provide additional inhabitable space.

It can strengthen visual relationships with nature.

It can facilitate social interaction.

It can participate in local food exchange.

It can alter the environmental character of a facade.

And it can do so while working with an existing building rather than beginning again from an empty site.

ECOTent and the Future of Sustainable Architecture

ECOTent presents sustainable architecture as something that can emerge through relatively small but repeatable interventions.

Its significance lies not in proposing a monumental new structure, but in questioning how everyday residential components can perform more roles.

The balcony becomes a room, garden, social threshold, food-production space, facade element, and connection point between neighbors.

Through its Space Modules and Green Modules, the proposal creates a flexible system capable of expanding across an existing building while maintaining room for individual occupation and customization.

The project also demonstrates why post-pandemic architecture does not need to be defined exclusively by separation. Instead, it can explore new ways of combining safety, privacy, social contact, food security, environmental quality, and community life.

Recognized with the Institutional Excellence Award in Retro-Fit 2020, ECOTent by Daniel Young, Zhiyu Feng, and Ge Tian turns a familiar architectural element into a framework for broader urban change.

Its proposition is straightforward but ambitious: the path toward more resilient and sustainable cities may begin not only with new buildings, but with rethinking the spaces that already surround us.