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Nassau County, NY

Name: Building Permits — Nassau County, NY
License: https://creativecommons.org/publicdomain/zero/1.0/

Residential building permits · 2015–2025

Housing units authorized (2025): 821
Construction valuation (2025): $436,734,259
By structure type (2025): 1-unit 642 · 2-unit 20 · 3-4 0 · 5+ 159

Units authorized by year

Year	Units	Valuation
2025	821	$436,734,259
2024	830	$402,947,809
2023	1,144	$454,888,030
2022	778	$427,586,038
2021	1,365	$432,573,679
2020	1,338	$430,676,378
2019	1,547	$431,717,467
2018	984	$394,250,726
2017	1,487	$468,220,305
2016	741	$321,252,121
2015	1,086	$393,114,725

The Census Building Permits Survey counts new privately-owned housing units authorized by building permits — a leading indicator of housing supply. "1-unit" is single-family; "5+ units" is larger multifamily. Figures are imputation-adjusted to cover permit offices that did not report.

Source: Census Building Permits Survey. License: CC0 1.0.