Definition
A surveyed map showing property boundaries, lots, streets, and easements in a subdivision, recorded with local authorities. The official drawing that proves your neighbor's fence is definitely on your lawn.
Example Usage
The plat revealed a utility easement running through my backyard, explaining why I can't build a pool there.
Origin
From Old French 'plat' meaning 'flat' or 'map,' adopted into English surveying terminology
Fun Fact
Some plat maps from the 1800s are works of art, hand-drawn with elaborate calligraphy and illustrations, now worth thousands to collectors.
Source: Land surveying and subdivision regulation standards
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same s**t, different day...