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	Z-flashing A special type of metal flashing that protects horizontal joints between siding panels that don't overlap. It has a Z-shaped profile and is designed to tuck up under the upper panel and overlap the lower one.
	zero-lot line The positioning of a house near or on top of the lot boundary, resulting in little or no space between houses.
	zero-net When the seller receives little or no net proceeds from the property sale.
	zoning Regulations that control the use of land within a jurisdiction.
	zoning variance A one-time modification of existing zoning law.