Illustrative: event footprints crossing a portfolio, losses rising and the exceedance-probability curve

Risk Academy, led by the Nexus Consortium · Hazards, Disasters and Resilience

Recovery, reconstruction and loss accounting

After the event the work turns to counting and rebuilding: damage to assets, loss in economic flows, needs by sector, and the recovery framework that sequences and finances the response.

Map recovery, reconstruction and loss accounting on a real place

01Model

The model, step by step

The model

From direct damage to a recovery need: how reconstruction time, forgone output and a resilience uplift build the number a donor conference sees

DataModelGateDecisionStandard it teachesStandard it relies onNeighbouring discipline

7 steps
Financing gap at 50 percent coverage
13.5% of stock
Output losses over the reconstruction
9.0% of stock
Recovery needs
27.0% of stock
Well-being loss, income-weighted
51.6% of stock equivalent
/

The model From direct damage to a recovery need: how reconstruction time, forgone output and a resilience uplift build the number a donor conference sees

02Scope

What the discipline covers

The subtopics its courses and labs teach.

Recovery, reconstruction and loss accounting: 0 primary courses open, 1 in preparation and 1 also taught here, across 8 subtopics. Courses: RAN-347 L2 in preparation, RAT-232 L2 also taught here.
Recovery, reconstruction and loss accounting at a glance
  • Open, 0
  • In preparation, 1
  • Also taught here, 1
  • Subtopics, 8
Course codes from the curriculum; study levels L1 to L4.
Courses
In development
Levels
In development
Labs
GeoAI lab, Exposure lab
  • Damage, loss and needs assessment
  • Disaster loss databases and accounting
  • Recovery planning and governance
  • Reconstruction and build back better
  • Livelihood and economic recovery
  • Housing recovery
  • Psychosocial recovery
  • Loss and damage in climate policy

Courses in development extend the scope to one further subject: Recovery planning and reconstruction.

03The discipline

The field and its scope

For recovery planners, finance officers, loss data managers and analysts who assess damage after a disaster, plan reconstruction and keep the loss record that planning and finance depend on.

04Measures

Quantities and units

05Methods

Methods and their limits

Each method is listed with what it assumes and where it fails.

06Debates

What the field debates

07Bodies and data

Bodies that set practice, and the data they publish

Bodies and standards are named so learners can find and apply their published work; the Academy teaches their use and links to the publisher, and no affiliation is implied.

08Simulator

Run the discipline's simulator

Recovery, reconstruction and loss accounting's own model, as a live chart: move each parameter and read how the outputs respond.

09Maps

Build a twin of any place

Search any place or open the world; the layers and generators follow recovery, reconstruction and loss accounting on the planet map, the globe and in 3D.

The Kahramanmaras earthquake sequence of 2023: a flat plan of the faculty twin. Terrain 59 to 3,044 m; 2 reference earthquakes, M7.5 to M7.8; 3,643,786 people in the box, 2020; Earthquakes M4.5 and above, past week: read live when the 3D twin opens; USGS ShakeMap intensity contours: read live when the 3D twin opens. Contours every 500 metres from the elevation grid; population count 2020, worldpop 1 km as four classes per cell (edges 11, 47, 405); reference earthquakes as marks.
The Kahramanmaras earthquake sequence of 2023, Turkiye. Flat plan of the same data: relief, the two epicentres with magnitude and depth, the WorldPop count grid and the numbers below. The 3D twin opens on devices with WebGL once its data and library have been checked.
  • Terrain 59 to 3,044 m
  • 2 reference earthquakes, M7.5 to M7.8
  • 3,643,786 people in the box, 2020
  • Earthquakes M4.5 and above, past week: read live when the 3D twin opens
  • USGS ShakeMap intensity contours: read live when the 3D twin opens
Credits and dates per layer are listed under the stage. Relief in the twin is exaggerated ×1.5 for legibility.

Drag to move, right drag or Shift with a drag to turn and tilt, Ctrl with the wheel to zoom. Keyboard: arrows move, Shift with arrows turn and tilt, + and - zoom, 0 resets, V steps through the views, Escape clears.

Flat plan of the same data: relief, the two epicentres with magnitude and depth, the WorldPop count grid and the numbers below. The 3D twin opens on devices with WebGL once its data and library have been checked.

The boundaries, names and designations shown do not imply any judgement on the legal status of any territory, or any endorsement or acceptance of such boundaries. Countries: Natural Earth (public domain).

10Nexus Standards

Nexus Standards it teaches and relies on

The Nexus Standards the discipline teaches toward, grouped by master standard, with the disciplines that teach each.

11Research hub

Research hub: papers, preprints and datasets

Open scholarly sources searched with the subject terms of Recovery, reconstruction and loss accounting.

Search termsRecovery, reconstruction and loss accounting; Damage, loss and needs assessment; Disaster loss databases and accounting; Recovery planning and governance; Reconstruction and build back better; Livelihood and economic recoveryDerived from the Risk Academy page on Recovery, reconstruction and loss accounting.

  • OpenAlexlisted for reference; not queried
  • Crossreflisted for reference; not queried
  • DataCitelisted for reference; not queried
  • Zenodolisted for reference; not queried
  • arXivlisted for reference; not queried
  • Europe PMClisted for reference; not queried
  • OpenAIRE Graphlisted for reference; not queried

No source is enabled for live display on this site yet: the sources are listed for reference and none is queried. Once the publisher of record enables a source after its terms are reviewed, recent works are listed here. Metadata and links only: title, authors, venue, year, type, open-access status and licence as each source records them; works are listed for orientation, not reviewed or endorsed.

12Hub

Research and tools

Research and preprints as they are published, by discipline, with the faculty's other tools.

The hub lists the newest research and preprints for Recovery, reconstruction and loss accounting, each with its source and date. Open the research hub

13Methods and standards

The methods it teaches

From the Academy's risk taxonomy: the discipline's own entries and those of its primary courses, with how many courses teach each.

Methods and practice

  1. Loss, damage and needs assessmentscope
14What is changing now

What is changing now

Recent developments in recovery, reconstruction and loss accounting, each with its source; sources checked on 16 October 2026.

15Courses

Courses in this discipline

Courses for this discipline are in development; until they open, study it through the connected courses and open lessons below.

The courses from connected disciplines below also teach this field.

16Also taught here

Courses from connected disciplines that also teach this field

Each course has its primary discipline elsewhere and teaches this field as part of its scope.

From connected disciplinesIn development

  1. RAT-232Disaster Loss, Damage and Needs AssessmentIn developmentTechnical, L2 Intermediate, 10 hours (estimate), primary discipline: Disaster risk reduction
17Labs

How the subject is practised in labs

LabWhat you do in itCourses using it
GeoAI labApply Earth observation and machine learning to open imagery1
Exposure labOverlay people and assets with hazard footprints1
18Technology in this area

How technology helps and what risk it brings

19Achievements

Achievements in this discipline

21Where this is practised

Where the subject is practised

Field platforms of the ecosystem where the subject is studied and applied.

22Practised in

The three Nexus Foundry systems where it is practised

  • Nexus FoundryGRIx systemLoss and damage records are canonical dataData room
  • NorthStar systemImpacts are recorded with the incidentIncidents room
  • Nexus systemReconstruction runs as a portfolioPortfolios room

Nexus Foundry system pages describe what each system and its rooms are designed to do; the courses teach the methods these systems apply.

23Across the ecosystem

Across the ecosystem

25References

Core references and where to begin

Start with Hallegatte, then Gall, then Olshansky.

NRNexus Reports gateway · GW-ACADEMY

Contribute to Nexus Reports from this page.

Nexus Reports is the Consortium's quarterly publication. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work.

Risk Academy
Recovery, reconstruction and loss accounting

Prepare with a related course

Open courses in connected disciplines teach the methods this discipline will build on.

Skip to toolbar