India’s urban transition is no longer defined solely by outward expansion. With redevelopment projects already reshaping existing colonies across metropolitan regions, particularly in Delhi, a more consequential opportunity is emerging: to treat these interventions as working prototype neighbourhoods. These are not pre-designed models, but live redevelopment sites where strategies can be tested, observed, and refined over time to inform the future of urbanisation in India.

Densification in India is often seen as a compromise, associated with congestion, infrastructure pressure, and a decline in quality of life. But this perception comes less from density itself and more from how it has been executed in the past.

Instead of treating redevelopment as a numbers game focused on housing or land value, these projects can be used to test how neighbourhoods actually function. Architect and theorist Christopher Alexander argued for a similar approach, which he described as piecemeal growth — an approach in which cities evolve through small, continuous, and context-responsive interventions rather than large, rigid master plans imposed at scale. His proposition was simple: urban environments function better when they are allowed to adapt incrementally, guided by real feedback rather than abstract projections.

India’s current phase of redevelopment offers a comparable moment. With the redevelopment of multiple colonies underway in Delhi, each site has the potential to become part of a larger learning process. Among these, the redevelopment of Sarojini Nagar and Netaji Nagar can be understood not just as projects, but as early working prototypes of how Indian cities might densify in the future. They reflect both the scale and ambition of this shift, involving a transition from low-rise government housing to significantly denser, high-rise configurations. As these neighbourhoods take shape, they allow us to understand, over time, how density, mobility, infrastructure, and public space come together in practice.

The question, however, must move beyond how much we can build to how well these neighbourhoods can function. Sarojini Nagar and Netaji Nagar offer a rare chance to understand how neighbourhoods operate as integrated systems, where density is not an isolated metric but something experienced through daily life. A well-planned dense neighbourhood can support what is often called a “5-minute neighbourhood”, where most daily needs are within walking distance. This reduces dependence on long commutes and creates a more local, grounded way of living. In this sense, density is not about fitting more into less space; it is about bringing more within reach.

Much of India’s urban movement is still structured around fragmented networks, where residential clusters, workplaces, and amenities remain disconnected. Redevelopment presents an opportunity to reorganise this relationship.

In the case of Sarojini Nagar and Netaji Nagar, their locations within the city’s core mean that the focus shifts from creating new access to strengthening existing systems.

Climate and infrastructure also need to be a part of the same conversation. Dense environments can perform well when they are designed with attention to orientation, materials, ventilation, and landscape. These decisions affect thermal comfort and resource use in a real way.

At the same time, social infrastructure cannot be treated as an afterthought. Schools, healthcare, community spaces and informal gathering points all play a role in how a neighbourhood functions.

Another important aspect is how these projects are financed and delivered. One approach that is gaining traction is to prioritise the development of commercial spaces and markets early in the process. In Sarojini Nagar, for instance, the restructuring and strengthening of its existing market is positioned as a key part of this logic, ensuring that economic activity is embedded within the neighbourhood rather than added later.

This also helps ensure that neighbourhoods are active from the outset, rather than becoming purely residential zones that rely on other parts of the city.

In this context, the idea of prototyping aligns closely with Alexander’s argument. What makes this approach valuable is that redevelopment is not a one-time exercise. Instead of relying on uniform, citywide solutions, urban strategies can be tested within specific neighbourhoods, observed over time, and adjusted based on performance.

The redevelopment of Sarojini Nagar and Netaji Nagar can be understood not as endpoints but as early iterations that can also serve as governance models in a longer process of learning how density can work in the Indian context.

By treating redevelopment as a process of learning and by changing how we think about density, we can start to shift the conversation. The real question is not whether Indian cities will become denser. That is inevitable. The question is whether this density will continue to be seen as a problem, or whether it can be used to create neighbourhoods that are more connected, efficient, and liveable.

The writer is Director, GPM, Architecture & Planner.