building line

noun

(on a building lot) a line within, or coinciding with, the property line, beyond which it is illegal to build.

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British Dictionary definitions for building line

building line

noun

the boundary line along a street beyond which buildings must not project

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012