Housing Policy in Developing Countries: The Importance of The Informal Economy
Introduction
Informal economy dynamics fundamentally dictate the success or failure of housing policy in developing countries, rendering many Western-centric models ineffective when applied without adaptation. This reality forms the core thesis of Richard Arnott’s working paper for the Commission on Growth and Development, which argues that the sheer scale of unregistered economic activity and unauthorized housing in the Global South creates unique constraints on government capacity.
Unlike developed nations where income is observable and taxable, developing nations face a dual challenge: they cannot accurately target subsidies based on earnings, and their fiscal base is eroded by the very sector that houses the majority of their poor. Understanding this relationship is not merely an academic exercise; it is the prerequisite for designing interventions that actually improve living standards for the urban poor.Why the Informal Economy Reshapes Housing Policy Design
The primary reason standard housing policies fail in developing contexts is the information asymmetry created by the informal economy. In wealthy nations, governments rely on income-contingent transfers, such as housing vouchers or allowances, to redistribute resources efficiently. These mechanisms assume the state can verify household earnings.
However, Arnott highlights that in the lowest income quintiles of developing cities, approximately 50 percent of workers are informally employed. Because these incomes are undocumented, conditioning housing assistance on declared income becomes impossible. A subsidy tied to formal wages would exclude the destitute who work entirely off the books while potentially benefiting wealthy entrepreneurs who operate outside the tax net.
This constraint forces a complete rethinking of redistribution. Since price-based or income-based targeting is unworkable, governments must pivot toward geographic targeting or self-targeting mechanisms. The presence of a large informal economy means that equity cannot be achieved through the tax-and-transfer systems familiar to OECD policymakers.
Instead, housing policy must function as a proxy for social welfare, often through the provision of public goods rather than direct cash or rent subsidies. The inability to observe income effectively precludes broad-based demand-side programs, making supply-side interventions like slum upgrading and infrastructure provision relatively more attractive, despite their own implementation challenges.
Fiscal Capacity Constraints Driven by Informality
Beyond targeting issues, the informal economy imposes severe macroeconomic limitations on what governments can afford to do. Fiscal capacity—the maximum sustainable tax revenue a government can collect—is directly correlated with the size of the formal sector. When a significant portion of economic activity occurs off the books, the tax base shrinks.
To maintain essential services, governments are forced to impose higher marginal tax rates on the compliant formal sector, which further incentivizes evasion and creates a vicious cycle of distortionary taxation.
Arnott notes that this diminished fiscal capacity explains why developing country governments often resort to excessive regulation and high permitting fees. These are not merely bureaucratic inefficiencies but rational, albeit dysfunctional, responses to revenue shortfalls. Cash-strapped bureaus use regulatory leverage to extract fees and fines, effectively privatizing public revenue collection through corruption and red tape.
Consequently, housing policy in these environments is often characterized by overregulation that makes formal housing unaffordable, pushing even more households into the informal economy.
Breaking this cycle requires recognizing that regulatory reform is as much a fiscal strategy as it is a housing strategy. Reducing the cost of formality can expand the tax base over time, but in the short term, it exacerbates budget deficits, creating a difficult intertemporal tradeoff for policymakers.
The Reality of Unauthorized and Squatter Housing
Housing informality is the physical manifestation of the broader informal economy. Data cited in the paper reveal that in low-income countries, roughly two-thirds of housing units are unauthorized, meaning they violate land ownership laws, zoning regulations, or building codes. An additional 17 percent constitute squatter housing on illegally occupied land. This stands in stark contrast to high-income countries where unauthorized housing is virtually nonexistent.
Policy responses to this reality have evolved significantly. Historically, governments viewed squatter settlements as illegal encroachments to be cleared. Today, there is a growing recognition that these settlements are nascent communities providing essential shelter that the formal market cannot supply.
The informal economy in housing functions similarly to informal labor markets: it responds to price signals and incentives. Owners incrementally upgrade structures as savings allow, and rental markets operate actively despite lack of legal title. Arnott emphasizes that because informal housing markets are responsive to economic stimuli, policies that "enable markets to work" are superior to those that attempt to suppress them.
Regularization and secure tenure can stimulate investment, but they must be balanced carefully. Providing full services and legal status to unauthorized settlements may encourage future informality, yet withholding services perpetuates poverty and negative externalities like disease and crime. The optimal path lies in treating regularization as part of a dynamic transition toward formality rather than a static reward for non-compliance.
Lessons from World Bank Shelter Lending History
The evolution of international development finance offers empirical validation of the informal economy framework. The World Bank’s shelter lending history demonstrates a clear trajectory away from public housing toward market-enabling approaches. Public housing projects in the 1960s largely failed due to rent controls, poor maintenance, and misallocation.
The shift to "sites and services" and slum upgrading in the 1970s acknowledged that self-help construction within the informal economy was the dominant mode of housing delivery. While sites-and-services projects successfully provided physical units, they often failed to achieve cost recovery or replicability because they relied on waivers and subsidies that could not be scaled.
By the 1980s and 1990s, the focus shifted again toward housing finance system development and institutional reform. However, Arnott points out a critical gap: formal financial institutions rarely serve the informal economy directly due to prudential risks and lack of collateral. This has led to the rise of shelter microfinance and community funds as bridging mechanisms.
Recent trends show a renewed interest in slum upgrading and decentralized poverty alleviation, reflecting an understanding that community organizations often possess better local information about needs than central governments.
The lesson is clear: successful policy does not try to replace the informal economy overnight but seeks to integrate it gradually through supportive infrastructure, microfinance, and realistic regulatory standards.
Strategic Recommendations for Enabling Markets
Based on the analysis of informality constraints, several strategic priorities emerge for housing policymakers. First, the central government should act primarily as a facilitator rather than a direct provider. This involves liberalizing housing finance markets while maintaining prudential oversight, reforming land markets to increase supply responsiveness, and reducing the regulatory burden that drives households into the informal economy.
Second, redistributive efforts should focus on geographically targeted infrastructure and basic services rather than individual income transfers. Ensuring that informal neighborhoods receive water, sanitation, and electricity serves as a de facto subsidy that improves welfare without requiring income verification.
Third, decentralization is essential. Local governments and community organizations are better positioned to identify the truly needy within the informal economy than distant central bureaucracies. Intergovernmental grants should support local initiatives that combine infrastructure investment with self-help housing subsidies.
Fourth, the international community has a vital role to play in financing urban infrastructure. Given the intergenerational nature of infrastructure benefits and the current fiscal constraints caused by the informal economy, external loans are necessary to avoid placing the entire burden on today’s poor.
Finally, policymakers must accept that the transition to formality is a long-term process. Short-run policies should tolerate and facilitate informal solutions while creating pathways for gradual integration, avoiding the temptation to impose developed-country standards that the current economic structure cannot sustain.
Conclusion
Richard Arnott’s analysis remains profoundly relevant for contemporary urban development because it grounds housing policy in the structural realities of the informal economy rather than aspirational ideals. The document demonstrates that ignoring informality leads to policy failure, while embracing it opens pathways to pragmatic improvement.
For researchers and practitioners, the key takeaway is that efficiency and equity in developing countries require different tools than in the developed world. Success depends on aligning interventions with the actual functioning of unregistered markets and acknowledging the fiscal limits imposed by them.
As urbanization continues at unprecedented rates, the insights regarding the informal economy provide an indispensable roadmap for creating cities that are not only more productive but also more just. The ongoing value of this work lies in its refusal to treat informality as a pathology to be cured, instead recognizing it as a rational adaptation to systemic constraints that policy must work with, not against.