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Record the signals a camera can document from the public street and a county record can later check. PropertyRadar's driving-for-dollars post names broken or boarded-up windows, overgrown grass and weeds, dilapidated roofs, cracked driveways, piles of newspapers, overflowing mailboxes, and notices from code enforcement taped to doors [1]. Two more belong on the sheet: a tarp on the roof, and a vehicle sitting in the same position across two dated visits. Log each one as an observation carrying a confirmed parcel address, a timestamp, the driver's name and a severity value, because none of them establishes that the house is vacant or that the owner wants to sell. HUD's aggregated USPS data marks an urban address vacant only after delivery staff identify 90 days or more of uncollected mail [6], so the records rather than the photograph decide what a note meant.