SII Mapas

Chile’s Servicio de Impuestos Internos (SII) values every property in the country for the property tax (contribuciones) and publishes the result on its property map, Mapas SII, by rol: the comuna, the manzana and the predio. This source reads that public record for one rol at a time: the avalúo fiscal for the current half-year with the part subject to the tax and the part exempt from it, the address, the destino SII assigns, the land and built surface, the point on the map, and the homogeneous area the land is valued in with its unit value. The comuna is SII’s own code (Santiago is 13101, Providencia 15103; these are not INE’s codes) or simply its name. The first ask of a rol reads SII; later asks within 30 days answer from Croma’s stored answer, which is re-read regularly so it follows each half-year’s revaluation. POST /cl/sii-mapas/property/v1 Lookup The property as SII’s map holds it today, avalúo fiscal included. The example is the block of the Biblioteca Nacional in Santiago.

Answers from Croma’s copy when it holds a recent answer for the key, otherwise reads the source and keeps the answer. Every response says when the source was last asked (checked_at) and where the answer came from (served_from).

Field	Type	Notes
`comuna`	string	Required. The comuna: SII’s code (e.g. `13101` Santiago, `15103` Providencia; not INE’s code) or its name (`Providencia`). Case and accents are ignored in a name.
`block`	integer	Required. The manzana: the rol’s first number, e.g. `18` in rol `18-1`.
`lot`	integer	Required. The predio: the rol’s second number, e.g. `1` in rol `18-1`.

curl https://api.croma.run/cl/sii-mapas/property/v1 \
  -H "Authorization: Bearer $CROMA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "comuna": "13101", "block": 18, "lot": 1 }'

Returns found, rol, checked_at (when SII was last asked), served_from (copy, upstream or stale) and property. property carries rol (<comuna code>-<manzana>-<predio>), comuna_code (SII’s), comuna, region, block, lot, address, zone (URBANA or RURAL), land_use (the destino, e.g. HABITACIONAL, COMERCIO, EDUCACION Y CULTURA), appraisal_total, appraisal_taxable and appraisal_exempt (the avalúo fiscal, afecto and exento, in Chilean pesos), land_area with land_area_unit, built_area_m2, built_volume_m3, latitude, longitude, valuation_period (the half-year of the avalúo), valuation_process and valuation_year (the general reappraisal it comes from), homogeneous_area (code, area_range, unit_value in pesos, median, samples, coefficient_of_variation) and checked_at. Owners are not part of SII’s public map.

A rol SII’s map holds no property under, or a comuna SII does not list, returns found: false with HTTP 200, not an error.

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