Mumbai has begun clearing long-standing slum clusters. Relief, anxiety, and hope often mingle in public reaction, but durable change requires a clear view of why slums emerge, how they keep a megacity’s cost structure afloat, why their footprint cannot define the city’s long-term form, what must replace them, and how recurrence can be prevented. A rigorous, humane, and law-aligned approach can reconcile economic efficiency with the dharmic commitment to dignity and compassion shared across Hindu, Buddhist, Jain, and Sikh traditions.

A pre-dawn street in Mumbai makes the stakes visible. Janitors, delivery riders, domestic workers, and drivers begin the day long before office lights turn on. Many live in informal settlements. Their labour keeps urban life affordable for the middle class, yet their housing is insecure, services are substandard, and commutes are risky. Any credible reform must recognise both truths: slums are essential to the current urban economy, and they are an unacceptable end state for a just, lawful, and productive city.

Why slums form can be distilled into four structural forces. First, rural-to-urban migration has outpaced the supply of affordable, legal housing. Migrants weigh higher urban wages against higher urban living costs and choose cities because wage differentials and job density dominate. As inflows surge, rents rise, and households bridge the affordability gap through informality and encroachmentespecially when political patronage, criminal cartels, and weak enforcement lower the perceived cost of illegality.

Inside this dynamic sit two distinct policy problems that often get conflated. One is a shortage of meaningful livelihood opportunities outside large metros. The other is inadequate, legal, well-located housing inside metros. Tackling only one yields partial, short-lived relief; comprehensive progress needs both.

Second, policy incentives are frequently misaligned. The Slum Redevelopment framework, including bonus Floor Space Index (FSI) for rehabilitation, is sound in principle but vulnerable to misuse. A simple WIIFM lensWhat’s in it for me?clarifies outcomes. For the occupier, an informal hutment may translate, over time, into a saleable formal unit. For the developer, fungible FSI that can be monetised in high-end towers creates a powerful arbitrage between construction cost per square foot and sale price. The result can be a perverse business model: allow encroachment to crystallize, then harvest redevelopment gains. Because this equilibrium requires many handspolitical actors, informal-sector intermediaries, and pliant enforcementit endures. Publicly reported completion rates and unit quality in some rehabilitation schemes remain weak, signalling design rather than execution failure.

Third, the economics of low-cost greenfield housing and slum redevelopment diverge sharply. In land-scarce cities, land cost is decisive. Slum Rehabilitation Authority (SRA) projects begin with near-zero land cost because the land has been encroached, while legitimate low-cost housing bears the full price of urban land. Attempts to fix the gap with higher FSI for affordable projects help at the margin, but location ultimately sets price and uptake. Predictably, units migrate upmarket, and low-income households are left with too few options near jobs. Even with scale, programmes like PMAY-U struggle on the in-situ redevelopment vertical when market forces and location fundamentals are misaligned.

Fourth, politicised settlement patterns and weak enforcement can produce deliberate clustering in strategically sensitive pocketsnear critical infrastructure, in electorally pivotal neighbourhoods, or along jurisdictional borders. Cross-border migration pressures in some corridors compound these stresses. The appropriate framing is institutional, not communal: uphold the rule of law, apply due process, strengthen identity and address verification, and ensure that urban planning and security considerations are respected without singling out any community. A rights-respecting, religion-neutral approach is essential for social cohesion and aligns with the shared dharmic principle of sarva-dharma-samabhāvaequal regard for all paths.

Understanding slums’ economic role is equally important. India’s informal sector accounts for roughly half of GDP and over 90% of total employment by various estimates. Dharavijust 2.4 sq km and over a million residentshosts tens of thousands of enterprises and is often estimated to generate USD 1–1.5 billion in annual output. This is not a marginal economy; it is a backbone of everyday urban life.

Three channels dominate this contribution. First, slums supply the low-wage labour that performs undesirable, difficult, and time-sensitive work: waste collection, sewage and drain maintenance, and large-scale recycling. They also staff the services middle-class households rely ondomestic help, drivers, delivery, janitorial work, and securitycreating an invisible subsidy that holds down the cost of living for the formal city.

Second, informal settlements often host small manufacturing and repair units. Many operate legally; some produce goods in regulatory grey zones or engage in polluting activities (for example, leather processing, dyeing, or plastics) that require proper environmental oversight. The objective should be formalisation with clear, low-friction compliance, not romanticisation of illegality.

Third, semi-formal supply-chain depots embedded in slums perform bulk-breaking, sorting, and transhipment at very low cost. This improves last-mile logistics and retail prices citywide. The social value is real even when the land use is technically non-compliant, which is why planned, legal replacements must be designed before removal.

In short, slums subsidise the city in the short run but cap its productivity in the long run. Residents remain in a poverty trapprecarious tenure, poor schooling, weaker health outcomes, and limited mobilitywhile the city forfeits density done right. This duality mirrors what research has called a “policy trap”: the gains from informality today harden into constraints on growth tomorrow.

Why, then, is clearance and redevelopment necessary? First, fairness and the rule of law demand it. When the expected cost of breaking the law is lower than the cost of compliance, urban governance corrodes. Households who rent legally and commute long distances face higher monthly costs than those living on encroached land near jobs. Rebalancing incentivesrewarding compliance and penalising violationsprotects the social contract and creates the predictability investors, workers, and families need.

Second, slums contradict coherent urban design. They frequently occupy alignments where critical infrastructureairports, high-capacity transit, stormwater outfallsmust sit. Freezing the footprint via in-situ regularisation can lock the city into a suboptimal spatial logic for decades, propagating outward as traffic choke points, security risks, and distorted land values.

Third, persistent informality in a few megacities can distort national development. By artificially preserving low delivered-cost advantages in Mumbai and similar hubs, capital and talent remain anchored instead of diffusing to tier-2 and tier-3 cities in states that need them most. Balanced regional growth reduces political backlash, narrows income gaps, and builds national resilience.

What should replace slums once cleared? Above all, the replacement must replicate the economic functions that slums performedlegally, safely, and with dignity. Mixed-income housing is the first pillar. Planners should target an explicit income mix so that the local service economy remains viable. A simple X:Y rulelinking the addition of each block of high-income units to a corresponding number of well-located, affordable rentalskeeps domestic workers, drivers, delivery staff, and sanitation workers within practical commuting reach. Transit-oriented planning should operationalise this mix around stations and high-frequency corridors.

The second pillar is supply-chain continuity. Legal, planned logistics micro-hubs for bulk-breaking, last-mile consolidation, and returns processing should be sited at the urban edge or at multimodal nodes, with one-window licensing and transparent tariffs. Small-scale repair and refurbishment clusters deserve dedicated, code-compliant spaces; formalising these functions prevents a silent spike in retail prices after demolition.

The third pillar is replacing illegal informality with cheap, fast legality. Where the Street Vendors Act 2014 and digital rails such as ONDC exist, implementation should slash compliance time and costpredictable vending zones, simple fee structures, and e-permits tied to grievance redress. The broader lesson generalises: when the price of being legal falls below the price of being illegal, informality withers without coercion.

The fourth pillar is public and social housing at scale with design discipline. International experience offers useful templates without being blueprints. Singapore moved from extensive slum conditions in 1960 to near-universal homeownership in HDB units through decisive land assembly, savings-linked finance, and an ethos that treated housing as nation-building. Indonesia’s Kampung Improvement Programme upgraded basic services for millions of urban poor, with long-term gains in formal employment and school enrolment recorded decades later. The transferable lesson is seriousnessclarity of roles, reliable financing, disciplined execution, and strong maintenance regimes.

Additional instruments strengthen this foundation. Rental hostels and dormitories for migrants near job nodes can stabilise churn and improve safety. Employer-assisted housing, land value capture (LVC), transferable development rights (TDR), and municipal bonds can finance trunk infrastructure. Titling reform for existing low-risk settlements, where appropriate, can unlock household investment in improvements, consistent with the property-rights literature.

Preventing slums from re-emerging requires acting on three fronts simultaneously. First, expand opportunities outside megacities. Reliable power, logistics connectivity, industrial and service clusters in tier-2 and tier-3 cities, and ease-of-doing-business reforms lower the wage gap that fuels migration surges. When aspirational livelihoods are real in places like eastern UP or Bihar, the pull of Mumbai weakens naturally.

Second, increase the supply of affordable, legal housing inside cities. Reform FSI intelligently, digitise land records, rationalise stamp duties, adopt single-window approvals with statutory time limits, and align development control regulations to support mid-rise, high-access density. Pair ownership pathways with robust, professionally managed public rental housing. Define and monitor an affordability thresholdsuch as keeping rent below 30% of incomeand use a calibrated mix of demand-side vouchers, rent-to-own models, serviced plots with incremental housing rights, and micro-mortgages to meet it.

Third, restore credible, citizen-aligned law and order. Police reforms already recommended by multiple commissionsseparating investigation from law-and-order duty, digitised low-discretion enforcement, and transparent accountabilitylimit rent extraction and raise the cost of encroachment. Early-warning systems that detect first-week squatting attempts, combined with swift, humane response and temporary shelter options, prevent footholds from hardening into settlements. Active resident associations, faith-based groups from dharmic traditions working together, and civic-tech platforms amplify legitimate, named, and sustained opposition to fresh encroachmentsshifting the equilibrium toward compliance without stigmatising any community.

Knowledge compounds when shared. A national, practitioner-led, Reddit-like forum for city officials, planners, utilities, and informed citizensanonymised where neededcan move solutions across cities in days instead of in five-year reports. Standard operating procedures for eviction with humanitarian safeguards, sewer connection rollouts, solid-waste route optimisation, and e-permitting can be adapted quickly when practical playbooks are open.

Ethically and culturally, a dharmic lens offers unifying guidance. Hindu, Buddhist, Jain, and Sikh traditions converge on compassion, dignity of labour, stewardship, and the duty to uphold social order. These principles justify both the urgency to end unsafe, illegal housing and the equal urgency to provide safe, legal, affordable alternatives. A city that embodies these values is more productive and more just.

In sum, slums are a symptom of limited state capacity in land governance, policing, service delivery, and business registration. Strengthen these institutions and the slum problem becomes tractable. Mumbai’s current clearances should be matched with a predictable pipeline of mixed-income housing, legal logistics hubs, fast and fair formalisation at the bottom of the pyramid, and regionally balanced growth. Measure success not only by roofs constructed, but by commute times saved, school attendance gained, respiratory illnesses reduced, enterprises formalised, and the share of households staying within the affordability threshold. That is the arc from informality to dignityanchored in data, law, and shared dharmic values.

For readers seeking further depth, a substantial literature underpins this approach. UN-Habitat’s global assessments detail the scale and characteristics of slum conditions; research on the economics of slums examines short-run benefits against long-run constraints; studies on property rights, urban governance, and regional growth trace institutional origins of today’s challenges and the levers most likely to shift outcomes. Taken together, these works reinforce a single conclusion: with aligned incentives, capable municipal institutions, and a humane, law-based framework, cities can replace informality with opportunitypermanently.

Inspired by this post on RightViews.