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New Castle County, DE

Name: Building Permits — New Castle County, DE
License: https://creativecommons.org/publicdomain/zero/1.0/

Residential building permits · 2015–2025

Housing units authorized (2025): 1,322
Construction valuation (2025): $168,511,921
By structure type (2025): 1-unit 1,128 · 2-unit 6 · 3-4 0 · 5+ 188

Units authorized by year

Year	Units	Valuation
2025	1,322	$168,511,921
2024	1,586	$229,074,001
2023	526	$63,330,489
2022	1,191	$136,901,945
2021	1,822	$207,791,730
2020	1,796	$185,574,109
2019	1,732	$172,509,816
2018	1,364	$125,306,675
2017	1,869	$145,791,373
2016	1,730	$147,335,151
2015	1,713	$146,268,378

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.