San José Historic Resources Inventory

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The City of San José maintains a GIS layer for its Historic Resources Inventory that can be imported into OpenHistoricalMap. This dataset is in the public domain as a work of the city government that incorporates a work of the county government.

The dataset currently contains 4,720 records, of which 4,501 have either TRUEYR or ESTIMATEDYR set to a meaningful value, so we can import them with start_date values to prevent them from showing up throughout all time. Only 52 have DEMOLISHED=1; no demolition date is given, so we’d need to make these records into a MapRoulette challenge or similar. Various other fields are relevant to OHM, such as RESOURCENAME (name), ARCHITECTURALSTYLE (building:architecture), and PROPERTYTYPE (everything from residential=* to shop=*). Each feature is only a point feature, but we could join this data to the city building dataset (#4) to import areas instead.

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When a feature has both TRUEYR and ESTIMATEDYR, TRUEYR appears to be a “resolved” date, akin to how we tag start_date=* to something within the range of start_date:edtf=*.