Building Resilient and Affordable Housing in the Hindu Kush Himalayas

Housing supply depends on a value chain that connects land, regulation, and finance. Without a steady supply of serviced land—or when site approvals are lengthy and costly—housing development cannot keep pace with population growth. Households may then turn to informal settlements, often on marginal or unsafe land, or overcrowd existing housing, increasing their vulnerability to disasters.

The scale is substantial. De facto housing accounts for an estimated 14% of the housing stock in the India–Himalaya region, 19% in Bhutan, and 50% in Nepal. Urban housing is also predominantly built by individuals: over 92% in Bhutan, 62% in India across all states, and 85% in Nepal. Institutional housing supply falls far short of demand.

These figures suggest that strategies for safer housing must work with households and local builders rather than around them. Improving access to serviced land, making regulations more responsive to local conditions, and providing appropriate financing and construction support can help households build safer homes without placing them beyond their financial reach.

Ground shaking is a major cause of damage during earthquakes, and its effects can be reduced through safer construction. Residential buildings in the region are largely vernacular or non-engineered. In Bhutan, for example, unreinforced fired brick accounts for 45% and adobe block for 30% of residential construction. When properly designed and constructed, traditional building techniques can provide significant seismic resistance.

The India–Himalaya region has a range of traditional earthquake-resistant construction techniques, including dhajji dewari and kat-ki-kanni. Building codes, however, may not always reflect current hazard assessments. Bhutan’s seismic provisions, based largely on Indian seismic zonation, use a peak ground acceleration of 0.36 gravity, which modeling suggests may underestimate seismic risk.

Other hazards require greater attention to where settlements are located. Improved GLOF risk assessments, land-use planning, and settlement siting can reduce exposure to future glacial floods. Integrating GLOF risk scenarios into development and relocation planning can help identify safer locations and strengthen community preparedness. Early warning systems remain important, but their effectiveness depends on the nature and location of the hazard. Earthquakes, landslides, and GLOFs differ in their predictability and potential warning times. When a sudden event occurs close to a settlement, there may be little time to evacuate. Communities farther downstream may have more time to respond to warnings.

These differences underscore the need for hazard-specific approaches. Stronger construction can reduce earthquake damage, while land-use planning and settlement siting become especially important where floods, debris flows, or landslides pose risks that buildings alone cannot adequately withstand.

Meeting seismic performance standards can increase construction costs by an estimated 5%–20%. However, some additional costs may be offset through design and regulatory adjustments without compromising safety or essential regulatory requirements.

Possible measures include reviewing setback and parking requirements to ensure they are appropriate to local risks and conditions without unnecessarily restricting land use. Greater flexibility in minimum floor areas, ceiling heights, building materials, and nonessential finishes may also help reduce costs while preserving essential amenities, habitability, and building safety.

Building codes and bylaws also need to be reviewed to better reflect local hazards. They should accommodate appropriate traditional construction practices, while responding to population growth and increasing density. Effective compliance also depends on training and incentives for builders, local governments, and other stakeholders.

For existing housing, phased, area-by-area programs can help regularize and upgrade homes to improve safety. Measures may include property registration or other forms of secure tenure, microfinance and small conditional grants for home improvements, financing tailored to household needs, and practical guides and training for local builders.

These approaches recognize that improving housing safety does not always require replacing existing homes or relying on large-scale housing developments. Incremental improvements, supported by appropriate regulations and financing, may provide a more accessible path for households that cannot afford to build or purchase new homes.

Where risks cannot be adequately reduced through safer construction, upgrading, or protective measures, risk-informed relocation may be necessary to protect lives and livelihoods in hazard-prone mountain regions.

Site selection should draw on hazard data and geospatial tools, incorporate environmental and social safeguards, and involve affected communities in planning and design. Financing options may include public–private partnerships, targeted subsidies, and concessional loans, while incremental housing and rent-to-own schemes may help households relocate without losing housing security.

Relocation decisions must also consider access to livelihoods, essential services, and community networks. Moving households away from hazardous locations may reduce their exposure to hazards, but relocation can create additional economic and social difficulties if new settlements are disconnected from employment opportunities or impose costs that households cannot sustain.

Relocation should therefore be considered alongside options for improving existing settlements, with decisions guided by the nature and severity of the hazards, the feasibility of reducing risks in place, and the needs of affected communities.

Safer housing must be supported by wider investments in disaster preparedness and resilient infrastructure. 

Monitoring and early warning coverage remains limited across the region, even as risks from GLOFs, landslides, floods, and other hazards are increasing. Settlements need accessible evacuation routes, safe shelters, and regular drills for residents, tourists, and tour operators. Because many hazards extend across national borders, lake inventories, monitoring data, and warnings also need to be shared among upstream and downstream communities.

Critical infrastructure is also essential. Roads, bridges, water supply, sanitation, and communication systems support emergency response and recovery, particularly in remote mountain communities where damage to a single road or communications link can leave settlements isolated.

ADB’s Building Adaptation and Resilience in the Hindu Kush Himalayas initiative, launched in December 2023 with ICIMOD among its partners, covers multi-hazard risk assessment, early warning for early action, impact-resistant infrastructure, and insurance solutions in Bhutan and Nepal.

Together, these measures can help ensure that safer homes are part of safer and better-prepared settlements.

Investing in disaster risk reduction before disasters occur can be substantially less costly than paying for relief and recovery afterward. Estimates suggest that every $1 invested in prevention and risk reduction can save up to $15 in recovery costs. More importantly, such investments can help protect lives, livelihoods, homes, critical infrastructure, and community assets, while preventing vulnerable households from falling deeper into poverty and insecurity. For governments and development partners, the priority is to address housing affordability and disaster risk together.

Risk data and mapping should inform development plans, housing policies, and settlement decisions. Building codes and bylaws should reflect local hazards and construction practices without imposing unnecessary costs. Housing finance and upgrading programs should reach households least able to afford safer construction, including women and other disadvantaged groups.

Regional institutions such as the Central Building Research Institute in Roorkee and ICIMOD in Kathmandu can support these efforts through knowledge sharing and practical training for masons, artisans, architects, engineers, planners, builders, and contractors.

Housing interventions must also be supported by early warning systems, evacuation routes, safe shelters, and resilient infrastructure. Recovery efforts should help restore livelihoods, enabling affected households to rebuild their lives and sustain long-term recovery.

Ultimately, making mountain communities safer requires more than constructing stronger buildings. Households must be able to afford safer homes, settlements must be planned with local hazards in mind, and communities need the infrastructure and resources to withstand and recover from disasters. Decisions about where and how people build today will shape the risks they face for decades.

Asian Development Bank (ADB). 2026. 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.

ADB. 2024. Build Back Better Sector Guides.

ADB. 2022. Disaster-Resilient Infrastructure: Unlocking Opportunities for Asia and the Pacific.

ADB. Building Adaptation and Resilience in the Hindu Kush Himalayas.

International Centre for Integrated Mountain Development (ICIMOD). Floods, GLOFs and Early Warning Systems.