Building Safer Himalayan Cities Without Pricing People Out

Building Safer Himalayan Cities Without Pricing People Out

The most important housing challenge facing the Hindu Kush Himalayas is not simply how to construct more homes. It is how to deliver affordable housing on safe, serviced land while towns are expanding across one of the world’s most seismically active and geographically constrained regions. Decisions about land, roads, drainage, utilities, building standards and housing finance are therefore inseparable from disaster resilience.

A July 2026 Asian Development Bank working paper places that relationship at the centre of regional urban policy. Toward More Livable Cities in the Hindu Kush Himalayas: Lessons from the Nexus of Affordable and Seismic-Resilient Housing in Bhutan, the India–Himalaya Region, and Nepal, written by Jude E. Kohlhase, Saswati G. Belliappa and Charlene Liau, examines how public policy, construction practices, finance and land administration influence the supply of housing across Bhutan, Nepal and the Indian Himalayan region.

Its significance extends beyond housing ministries: the findings have direct implications for infrastructure owners, municipal authorities, developers, engineers, building-material suppliers, lenders and development institutions.

Briefing

• Affordable housing policy in the Himalayas cannot be separated from seismic risk, land availability, infrastructure provision and access to finance.
• The report estimates that de facto or substandard housing represents 14% of stock in the Indian Himalayan region, 19% in Bhutan and 50% in Nepal.
• Seismic strengthening can add between 5% and 20% to non-engineered earth and masonry construction, but design efficiencies and appropriate materials can recover part of that cost.
• Public–private partnerships, land pooling, flexible zoning and land value capture could create a more predictable supply of serviced sites for affordable development.
• Digital hazard platforms, locally appropriate building codes and training for masons, inspectors and small contractors are essential to converting policy into safer construction.

Housing resilience begins before construction

Seismic resilience is often treated as a matter of structural detailing, material specification and code enforcement. The ADB paper demonstrates that the decisive choices are frequently made much earlier, when authorities determine where urban expansion will occur, which land can be assembled, how infrastructure will be financed and whether geological information is available to planners and developers.

A well-designed building can still be exposed to disproportionate risk if it occupies unstable ground, a liquefaction zone or a landslide-prone slope. Conversely, safer land may remain unavailable to lower-income households if it lacks roads, drainage, water, wastewater services, electricity or a clear route through the planning system. The result is a housing and infrastructure problem in which engineering quality, land economics and public administration constantly interact.

This makes municipal infrastructure a central part of the housing market. The public sector generally controls or heavily influences land-use planning, trunk infrastructure, planning approvals and the release of developable land. Private companies and households undertake much of the financing, design and construction. Unless those functions are coordinated, the formal market struggles to supply homes at the volume or price required.

The report describes this as a housing value-chain issue. A shortage of serviced land or lengthy approval processes can constrict every subsequent stage, from developer finance and material procurement to household lending and rental supply. Informal development then becomes the practical alternative, often placing those with the fewest resources in the locations most exposed to disaster.

Urban growth is concentrating exposure

The Hindu Kush Himalaya extends approximately 3,500 kilometres across Afghanistan, Pakistan, the People’s Republic of China, Nepal, India, Bangladesh, Bhutan and Myanmar. The wider region supports the livelihoods and economies of more than a billion people through its river systems, biodiversity and natural resources, while its towns act as centres for administration, trade, education, healthcare, tourism and transport.

Those urban centres are growing in an environment shaped by active tectonics, steep terrain and increasingly interconnected hazards. Earthquakes can trigger landslides, damage water and road networks, isolate settlements and place severe pressure on emergency services. Glacial lake outburst floods, wildfires and changing rainfall patterns add further complexity to decisions about settlement growth and infrastructure investment.

The report notes that populations in Asia’s most seismically hazardous areas increased by 21% between 2000 and 2015. Growth in these locations was 3.4% faster than in less seismically hazardous areas. That does not automatically translate into disaster losses, but it raises the consequences of weak planning, inadequate construction and infrastructure backlogs.

Around 650 million people are estimated to live in high seismic-risk areas of the Hindu Kush Himalaya when a 100-kilometre buffer is included. Approximately 346 million of them are within the study area examined by the authors. This scale makes resilience a substantial investment and construction-market consideration rather than a specialist concern confined to emergency management.

The affordability problem cannot be engineered away

Building stronger homes has a cost, but the report cautions against treating seismic standards as the sole cause of unaffordable housing. Land prices, infrastructure charges, administrative delays, minimum plot requirements, parking provisions, financing conditions and inefficient designs can exert greater pressure on the final cost than basic structural improvements.

Bhutan illustrates the severity of rental pressure. In Thimphu, the average rent-to-income ratio among households living in officially sanctioned housing is reported at 42% for women-headed families and 33% for men-headed families. Phuentsholing has a median rent-to-income ratio of 42.5%, while the national median for privately rented housing is 27.5%. The poorest households carry the heaviest burden, although rental stress extends into near-poor and middle-income groups in several urban areas.

India’s Himalayan states face a different scale of demand. The paper reports that 56% of people classified as economically weaker face a housing shortage in the region. Nepal’s National Shelter Policy calculated that 1.4 million urban housing units would be required by 2023, implying annual construction of approximately 90,000 homes, but actual delivery remained far below that level.

When formal supply cannot match household incomes, accommodation does not disappear. It is provided through single rooms, informal extensions, unauthorised self-building, subdivided dwellings and settlements outside the formal planning system. The paper estimates that this de facto housing accounts for 14% of stock in the Indian Himalayan region, 19% in Bhutan and 50% in Nepal, with around five million people living in substandard housing across the study area.

A policy that enforces standards without expanding affordable supply can therefore produce unintended consequences. Households may overcrowd existing properties, move into unregistered rental accommodation or build beyond effective regulatory oversight. Resilience depends on making compliance practically and financially achievable, not simply making it mandatory.

Serviced land is the critical infrastructure asset

A predictable supply of developable land is one of the strongest commercial themes in the report. Residential uses commonly occupy between 40% and 70% of urban land, yet mountain towns must accommodate them within tight geographical, environmental and geological constraints. The release of suitable sites must consequently be informed by hazard mapping as well as transport access, utilities, employment and social infrastructure.

Land pooling provides one possible mechanism. It allows fragmented plots to be assembled for coordinated development, with owners contributing a proportion of their land for roads, infrastructure and public space. Remaining plots can gain value as a result of improved access, services and development potential. For government, the approach can reduce dependence on compulsory acquisition and help finance infrastructure through the value created by planning and servicing land.

Bhutan has accumulated useful experience in this area. Land pooling has been used to consolidate fragmented parcels and support planned development in Thimphu and other towns, with ADB assistance contributing to roads, drainage, water and wastewater infrastructure. By 2019, between 25% and 29% of land in Thimphu municipality, amounting to around 260 acres, fell within land-pooling schemes.

The model is not automatic or frictionless. It requires legal authority, credible valuation, transparent treatment of landowners, protection for tenants and mechanisms for resolving compensation disputes. Early schemes in Bhutan encountered resistance before the planning instrument acquired a clearer legal basis and public confidence. India and Nepal have also faced difficulties where legal frameworks, cadastral records or institutional coordination have been insufficient.

For contractors and developers, the value of successful land pooling lies in scale and predictability. Larger serviced sites can support efficient layouts, standardised construction and coordinated procurement. For infrastructure authorities, they make it easier to plan road access, drainage, retaining structures and utilities as an integrated network instead of retrofitting services into piecemeal development.

Seismic strengthening can remain affordable

The paper’s construction-cost analysis challenges the assumption that resilient housing must be prohibitively expensive. For non-engineered low-rise earth and masonry buildings, meeting recognised seismic design guidance can increase costs by between 5% and 20%. For engineered reinforced-concrete buildings, the estimated increase is between 2% and 10% for most structures, rising as high as 30% for buildings above eight storeys.

Those figures need to be considered against the entire design and development budget. Reducing unnecessary complexity, regularising floor plans, selecting appropriate structural systems and avoiding excessive room heights can release savings for seismic detailing. The report estimates that lowering room heights to 2.8 metres can reduce costs by between 3% and 5% across building types without sacrificing basic amenity.

Locally appropriate materials also have a role. Rammed-earth construction permitted under Bhutan’s Code 9 and Code 10 can, according to the study, reduce the cost of a single-storey load-bearing building by 25% compared with reinforced cement concrete. For a two-storey building, the reduction can exceed 50%. Properly designed timber-frame and bamboo construction can similarly combine lower material demand with favourable seismic behaviour.

Traditional construction should not, however, be confused with unregulated construction. Vernacular earth, timber and masonry buildings can perform well when their load paths, connections, wall dimensions, openings and material quality follow established principles. Poor workmanship, weak mortar, irregular layouts and inadequate connections can turn familiar building systems into serious hazards.

This creates a sizeable requirement for practical technical support. Small contractors, masons and household builders need construction guides that can be applied on site. Designers require hazard information and code provisions suited to local building types. Inspectors need training, adequate resources and a compliance-oriented approach that helps builders correct problems while work remains accessible.

Codes need local risk information

A building code is only as useful as the hazard assumptions, technical evidence and implementation capacity behind it. The report finds that seismic risk remains underestimated across parts of the study area, while risk-informed land-use planning and detailed microzonation are unevenly available.

Bhutan’s regulations draw heavily on Indian standards, which can reduce the administrative burden of maintaining a wholly independent code and preserve compatibility with an important construction supply chain. The limitation is that Bhutan’s seismic zonation still depends on Indian mapping that may not reflect local conditions with sufficient precision. The report recommends a probabilistic seismic hazard analysis developed through collaboration between Bhutanese and international specialists.

Nepal has progressively adapted its own building code since 1994 and has developed approaches for disseminating safer construction practices. The country’s experience following major earthquakes demonstrates both the importance of appropriate technical standards and the difficulty of enforcing them across diverse terrain, informal markets and a large stock of non-engineered buildings.

The next stage is more granular regulation. Seismic provisions should reflect differences in soil, slope stability, liquefaction potential, building type and expected performance. Strategic infrastructure also needs standards proportionate to its importance because the failure of bridges, water systems, power supplies or access roads can compound losses far beyond the damaged asset.

Digital hazard data can reshape investment decisions

The report argues for hazard information that can be used by planners, engineers, developers, lenders, insurers and communities, rather than data that remains confined to scientific institutions. This requires consistent geospatial formats, appropriate resolution and clear presentation for different users.

Indonesia’s InaRisk platform is offered as a reference model. As part of the country’s One Disaster Data system, it brings together hazard, vulnerability and risk information covering multiple threats, including nationwide earthquake mapping. Its relevance to the Himalayan region lies in the governance model as much as the software: agencies, technical specialists and statistical bodies contribute to a shared information environment.

An equivalent approach across the Hindu Kush Himalayas could support site selection, infrastructure prioritisation, building-code updates and investment appraisal. Developers could screen land before committing capital, municipalities could direct expansion towards lower-risk zones, and lenders could better understand the resilience of the assets they finance.

Building such platforms requires sustained investment. Databases must be updated as urban footprints, climate conditions and scientific knowledge change. The report therefore favours incremental development, with datasets expanded and refined over time rather than delaying implementation until a theoretically complete system is available.

Financing the whole housing value chain

Housing finance is frequently discussed as mortgage availability, but the market requires capital at several points. Developers need construction finance, municipalities need funding for trunk infrastructure, lower-income households may need small improvement loans rather than conventional mortgages, and landlords require incentives to provide safe rental accommodation at sustainable prices.

Microfinance can support incremental improvements, particularly where households have irregular incomes or limited collateral. The report highlights the importance of gender-responsive finance because women can face additional barriers to land ownership, formal credit and secure housing. Small loans and conditional grants can fund strengthening, repair, sanitation and extensions without requiring households to purchase a complete new dwelling.

Development institutions can also provide catalytic capital to private lenders. The paper cites ADB’s $60 million loan approved in 2019 for Aavas Financiers Limited, supporting access to housing finance for lower-income women in ten less-developed Indian states, including Nagaland and Tripura. Such facilities can extend the market into groups and locations that mainstream mortgage providers may consider difficult to serve.

On the supply side, public–private partnerships could treat public land and infrastructure as government equity. Flexible zoning could allow a mix of residential and commercial uses, enabling higher-value development to cross-finance lower-cost homes. Land and commercial value-capture mechanisms could then return part of the value created by public investment to infrastructure and affordable housing.

Rent-to-own arrangements and homes designed for incremental vertical or internal expansion provide further options. These models align expenditure more closely with household income growth and allow occupants to improve properties over time. Their success depends on secure tenure, transparent contracts, technically safe expansion designs and finance products that recognise staged construction.

A regional construction capability is emerging

The report’s recommendations point towards a broader industrial development opportunity. Demand for resilient housing could support local production of appropriate materials, specialist design services, hazard-mapping businesses, testing facilities and skilled employment in construction. It could also strengthen the capabilities of local authorities and small contractors, which carry much of the responsibility for implementation.

ADB proposes a regional network linking research bodies, technical institutes, universities and centres of excellence. Potential participants identified in the report include the Central Building Research Institute in Roorkee, the Himalayan Institute of Alternatives, the International Centre for Integrated Mountain Development, the Energy and Resources Institute, and architecture and engineering schools across the region.

Training cannot be limited to structural engineers. Masons, artisans, architects, planners, building inspectors, contractors and financial institutions all influence whether a resilient design becomes a resilient building. Greater participation by women in these professions could widen the skills base while improving the ability of programmes to respond to household needs.

This regional capability could also reduce the cost of compliance. Standard details, tested vernacular systems, shared training materials and accessible technical advice can prevent each municipality or small builder from solving the same problems independently. For manufacturers and technology providers, clearer standards would create a more legible market for certified materials, connectors, prefabricated components, geospatial services and inspection systems.

From disaster response to planned urban investment

The commercial case for resilience rests partly on avoided losses, but it also includes greater investment certainty, better-functioning land markets and more reliable infrastructure. The report cites an estimate that each dollar invested in prevention and risk reduction, particularly when incorporated into build-back-better recovery, can save up to $15 in relief expenditure.

Realising those benefits requires investment before a disaster exposes weaknesses. Hazard mapping, serviced land, code revision, training and household finance rarely attract the visibility of reconstruction programmes, but they shape the scale of future damage and the speed with which towns can recover.

The ADB road map calls for risk considerations to be embedded throughout the project cycle. It recommends stronger urban and housing policies, locally contextualised building codes, digital information platforms, regional institutional networks, expanded housing finance, microenterprise development and risk-informed relocation where communities cannot safely remain in place.

For the construction and infrastructure sectors, the underlying proposition is practical. Safer Himalayan cities will not be created by a single technology, regulation or funding programme. They will emerge from a dependable system that supplies appropriate land, infrastructure, technical knowledge, finance and construction capacity at prices households can sustain.

Key Industry Questions

1. Why must affordable housing and seismic resilience be planned together? Separating the two can shift risk towards the households least able to absorb it. If resilient construction raises the price of formal housing without complementary land, finance and design measures, lower-income residents may turn to overcrowded or informal accommodation. If affordability is pursued without hazard-informed planning and construction, new homes may be exposed to earthquakes, liquefaction or landslides. Integrated policy allows governments to use serviced land, efficient design, targeted support and appropriate building systems to control costs while maintaining minimum safety standards.
2. How much does seismic strengthening add to housing construction costs? The increase depends on building type, height, materials, site conditions and the standard of the original design. The ADB report estimates an additional 5% to 20% for non-engineered low-rise earth and masonry buildings following accepted seismic guidance. For most engineered reinforced-concrete buildings, it estimates 2% to 10%, potentially rising to 30% for buildings above eight storeys. These costs can be partly offset through regular layouts, appropriate structural systems, lower room heights and elimination of unnecessary finishes or planning requirements.
3. Can traditional Himalayan construction meet modern safety requirements? Traditional systems can provide affordable and seismically capable housing when they are properly designed, constructed and maintained. Rammed earth, timber frames, bamboo and masonry can perform effectively if wall dimensions, connections, openings, foundations and material quality comply with recognised guidance. Their performance deteriorates when construction is informal, workmanship is poor or alterations compromise structural behaviour. Codes should therefore recognise validated vernacular techniques while providing practical details, training and inspection arrangements for masons and household builders.
4. What is the role of roads and municipal infrastructure in housing affordability? Roads, drainage, water, wastewater, power and public transport determine whether land can support viable housing. Where these services are absent, developers face high upfront costs and households may become isolated from employment and essential services. Where infrastructure is retrofitted after informal development, construction can be more expensive and disruptive. Coordinating infrastructure with land assembly and housing delivery creates economies of scale, improves site safety and gives developers a clearer investment pipeline.
5. How can land pooling support safer urban development? Land pooling combines fragmented plots so that infrastructure, access routes and public space can be planned across a coherent development area. Owners contribute part of their land and retain serviced plots that may gain value through improved development potential. The mechanism can help municipalities release safer land without relying entirely on compulsory purchase. Successful schemes require clear legislation, transparent valuation, accurate cadastral records, owner participation and safeguards for tenants and other occupants who may lack registered land rights.
6. Would stronger enforcement push more people into informal housing? It can if enforcement is introduced without addressing land supply, construction costs, household finance and access to technical assistance. Households excluded from compliant housing may build without approval or occupy unsafe rental accommodation. The report supports compliance-oriented enforcement in which inspectors, designers and builders receive training and practical guidance. Targeted grants, microfinance and staged upgrading can help existing households meet standards without requiring immediate wholesale reconstruction.
7. What digital information should be available to developers and engineers? Useful platforms should include seismic hazard zones, expected ground-motion data, liquefaction potential, landslide susceptibility, flood and wildfire exposure, existing infrastructure and projected urban growth. Information should be available in compatible geographic information system formats at a resolution appropriate to site selection and design. Different interfaces may be required for engineers, planners, lenders and the public. Data provenance, update schedules and uncertainty should also be visible so that users understand how confidently it can support investment decisions.
8. Where are the strongest private-sector opportunities? Opportunities extend from affordable housing development into materials, geospatial services, engineering, inspection, finance and vocational training. Predictable pipelines of serviced land could support larger projects and standardised construction, while updated codes may increase demand for tested components and specialist design services. Lenders can develop incremental improvement, rental and rent-to-own products. Local contractors and microenterprises can provide retrofitting, maintenance and resilient construction services, particularly if governments and development banks support training, certification and access to working capital.

Strategic Takeaways

1. Affordable seismic resilience depends on the performance of the entire housing value chain, beginning with safe land and infrastructure rather than structural design alone.
2. Serviced-land pipelines, land pooling and flexible zoning can create investable housing markets while directing urban growth away from avoidable hazards.
3. Seismic construction premiums can be partly recovered through efficient design, locally appropriate materials and planning reforms that remove unnecessary costs.
4. Digital hazard information will increasingly influence site acquisition, infrastructure planning, lending, insurance and regulatory approval across Himalayan cities.
5. The largest long-term opportunity lies in building local capability among municipalities, designers, inspectors, masons, contractors, manufacturers and financial institutions.