Index change and building permits for the year, with every county.
In 2020 the FHFA house price index for Delaware changed +3.3%, against +3.0% for the United States and +3.5% in 2019.
8,455 housing units were authorised by building permits in the state that year (7,101 single-family), +29.3% on 2019; the national total was 1,471,141.
+3.3%Delaware index, 2019–2020US +3.0%
8,455housing units permitted in 20207,101 single-family
3 of 3counties with a rising indexmedian county +3.4%
Ranked by the county index change from 2019 to 2020 (FHFA annual county index). Permits are units authorised in 2020; per 1,000 uses the vintage 2025 population.
Housing units authorised in Delaware by yearsingle-family2+ unit buildings
Source: Federal Housing Finance Agency annual state and county house price indexes (updated March 31, 2026); Census Bureau Building Permits Survey annual state and county files. Public domain. Methodology.