Today: a proof of concept built with scripts, not yet a service. It computes shade hour by hour from public data, cross-checks several sources, and runs initial precomputed simulations for one square in Barcelona (shade sails and new trees, on a given date). On trails and natural areas, it assesses conditions as they are, one day per season, without simulating any change. Every result states its source and distinguishes measurements, calculations, and simulations. It separates the shade cast by trees from the shade cast by buildings, hour by hour.

CASAS.ES (Propalytics Intelligence Ltd) is a free web map with a data sheet for every building in Spain (12,974,035 buildings), built from official open data: the Spanish Cadastre, the energy performance certificate registers of 13 Spanish regions, census-tract income and census data from the National Statistics Institute (INE), aerial photography from the National Geographic Institute (IGN) and the national flood-zone maps (SNCZI), among more than 250 official and open sources.