Each dot = a parcel's main structure at its YearBuilt (landmark-corrected). Shows construction, NOT ADUs/units added later. Assessor data ends at 2016 — nothing after that is on this map. 3,399 parcels have no build date (excluded), and they are mostly public: 0 of 19 BART parcels, 0 of 14 EBMUD, 1 of 52 UC, 22 of 197 City of Berkeley. Elmwood outlined.