Commercial Real Estate Market in New Castle, DE
Updated monthly: sale, lease, property records, location trend, and more… · Last update: October 31
56 active listings and 1,256 off-market properties in New Castle, DE. Commercial property asks $142/SF to buy (based on 3 listings) and $14.00/SF/Yr to lease.
Market Trends
New Castle, DE spans 38.3 square miles in New Castle County, Delaware. Figures below refresh monthly; last updated 31 October 2026.
Office
Office vacancy in New Castle, DE runs 20.2% across the South region in 2025, up from 14.4% in 2019.
Retail
Retail vacancy in New Castle, DE runs 5.4% across the South region in 2025, down from 7% in 2020.
Industrial
Industrial vacancy in New Castle, DE runs 7.9% across the South region in 2025, up from 6% in 2019. Nearly 2.3x the 2022 low of 3.5%.
Multifamily
Across New Castle County, multifamily space asks $160/SF to buy. Multifamily vacancy in New Castle, DE runs 11.3% across the South region in 2025, up from 8.5% in 2022.
Market overview
Demographics & Economy
New Castle, DE has 61,043 residents in 24,262 households. Density runs 1,594 people per square mile. Median household income here is $75,985 and median gross rent $1,282 a month.
Tools
Frequently Asked Questions
What is the median price per square foot for commercial property in New Castle?
How much does it cost to lease commercial space in New Castle?
Where does Realmo's New Castle market data come from?
Methodology & data sources
- Asking prices and medians
- There are 11 active for-sale and 45 active for-lease listings in New Castle, DE. The medians are based on 3 of the for-sale and 11 of the for-lease listings, those that state a price or rent per square foot. These are ASKING figures from live listings, not closed-transaction prices, and a figure resting on fewer than 10 listings says so where it is quoted.
- Vacancy rates
- Published per-sector market series, taken at the metro level where one exists and otherwise at the Census-region level — a chart reading "in <region> region" is a regional number, not this city's.
- Refresh
- The monthly aggregates close at the end of the previous month, so 31 October 2026 — not today — is the honest last update.
- Known limitations
- office vacancy is reported at South region level, retail vacancy is reported at South region level and industrial vacancy is reported at South region level.
- Coverage
- Metrics below the 10-observation threshold fall back one geographic level. The geography used is named on each figure.
Compiled by the Realmo Data team · reviewed 31 October 2026 · How Realmo checks market page data · Report a data issue
