Dwelling fractions for Chile

Chile is divided into 12 regions departments plus the Metropolitan of Santiago (the country's capital), 51 provinces and 342 communes. An exposure model has been developed in terms of the number of buildings as well as economic value (replacement cost of the structures, excluding contents and non-structural components) at department, province and district level.

The latest census carried out in Chile was in 2012. However the data is not longer available due to irregularities in the collection and processing of data. Therefore, information about building characteristics was based on data from census 2002, INE (Instituto Nacional de Estadística, Chile).

Reference information for common materials and building types in the country

In order to improve the understanding of the typical and common building types in the region, the results coming from PAGER and UN-HABITAT and the ones coming from the GEM Workshop in Medellin are summarized in the following figures. In addition, a summary of the housing reports coming from the World Housing Encyclopedia (WHE) are presented.

A summary of information provided in the census 2002 at national level is presented in the following pie charts. These results show dwelling fractions according to the predominant exterior wall material (“material de paredes exteriores”), floor material (“material del piso”), dwelling type (“tipo de vivienda”) and type of area (“tipo de area”); and also pie charts have been generated for dwelling fractions in urban and rural areas (pie charts on the top and bottom respectively) according to the type of house and the material of the floor.

Mapping scheme

Using the previous information and expert judgement, a mapping scheme to classify the dwellings into a set of building typologies has been developed (see figure). The mapping scheme consists on two tables: the first table allocates a building category according to the material of the exterior walls and the material of the floor, and the second table assigns building fractions to the possible typologies given the type of dwelling and the building category previously defined. The building typologies have been defined in accordance with the GEM Building Taxonomy.

Regarding the census attribute definitions, concrete exterior walls has been assumed to represent confined masonry walls, infill reinforced concrete frames or precast concrete walls (with low construction quality), and the type of house Covacha refers to an informal construction generally characterised by wooden exterior walls.

See more about mapping scheme methodology

Urban Rural
 chl_mapping_urban  chl_mapping_rural

Dwelling fractions

Chile has a total number of dwellings of 3,899,448 distributed across 24 building typologies (taxonomy categories) (see Table 2.1). Figure 2.25 illustrates the proportion of dwellings in each taxonomy category at a national level and the proportions for the Metropolitan of Santiago region and the commune of Valdivia (Los Lagos / Los Rios). At a national level the predominant categories in terms of predominant construction material are Masonry (unreinforced, reinforced and confined), Wood and Concrete (frames and walls) (35%, 31%, and 23% respectively), whereas at region, province and commune levels the proportions vary considerably. For example, in Santiago the percentage of dwellings in Masonry category is around 50% while in the commune of Valdivia this percentage is only 10%.

Dwelling distribution along Chile is shown in the following maps using different resolution levels. At the region level 1(a), pie charts show the proportion of each building typology in the region. The pie charts are not shown in the other figures for the sake of clarity.

Dwelling distribution
Region level Province level Commune level
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  • risk/exposure/chile.txt
  • Last modified: 2016/05/09 12:59
  • by Catalina Yepes