Commercial Real Estate Market in Dekalb, IL
Updated monthly: sale, lease, property records, location trend, and more… · Last update: August 31
72 active listings and 1,335 off-market properties in Dekalb, IL. Commercial property asks $37/SF to buy and $19.00/SF/Yr to lease.
Market Trends
Dekalb, IL spans 81.0 square miles in DeKalb County, Illinois. Figures below refresh monthly; last updated 31 August 2026.
Office
Office vacancy in Dekalb, IL runs 21.3% across the Midwest region in 2025, up from 13.7% in 2019.
Vacancy Rate % in Midwest region
Retail
Retail vacancy in Dekalb, IL runs 6.3% across the Midwest region in 2025, down from 8% in 2020.
Vacancy Rate % in Midwest region
Industrial
Industrial vacancy in Dekalb, IL runs 4.9% across the Midwest region in 2025, up from 4.4% in 2019. Nearly 1.6x the 2022 low of 3.1%.
Vacancy Rate % in Midwest region
Multifamily
Multifamily vacancy in Dekalb, IL runs 8% across the Midwest region in 2025, up from 6.5% in 2022.
Vacancy Rate % in Midwest region
Zoning & Land Use
Land Use Mix share of zoned land by category
- Planned_development 40.5%
- Residential 23.2%
- Industrial 20.5%
- Civic 7.8%
- Commercial 6.7%
- Mixed use 1.4%
Largest Zones share of zoned land by district
Planned Development Industrial
Single Family Residential 6000 Square Feet Minimum Lot Size
Heavy Industrial
Planned Development Residential
Northern Illinois University
Heavy Industrial (HI)
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Market overview
Demographics & Economy
Dekalb, IL has 42,103 residents in 18,175 households. Density runs 520 people per square mile. Median household income here is $46,808 and median gross rent $1,018 a month.
42,103
Population
18,175
Households
2.3
Avg Household Size
29
Median Age
36%
College-Educated
90%
High-School Grad
81 sq mi
ZIP Area
520
Density / Sq Mi
$46,808
Median Household Income
$22,838
Median Earnings
$1,018
Median Rent
$205,700
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Sycamore | — | $8.67 |
| Malta | — | — |
| Clare | — | — |
| McGirr | — | — |
Commercial property in Dekalb, IL asks $37/SF.
Frequently Asked Questions
What is the average price per square foot for commercial property in Dekalb?
Commercial property in Dekalb, IL asks an average of $37 per square foot.
How much does it cost to lease commercial space in Dekalb?
Asking lease rates in Dekalb, IL average $19.00 per square foot per year.
Where does Realmo's Dekalb market data come from?
Realmo compiles Dekalb, IL figures from 6 recent recorded sales, 52 active sale listings, 20 active lease listings, 1,335 tracked off-market properties, the current Dekalb zoning release. Sale and lease figures refresh monthly; vacancy annually. Last updated 31 August 2026.
Methodology & data sources
- Asking prices and averages
- Computed from 52 active for-sale and 20 active for-lease listings in Dekalb, IL. These are ASKING figures from live listings, not closed-transaction prices, and a segment carried by a handful of listings reads as indicative rather than an average.
- 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.
- Zoning and land use
- The current municipal zoning release: 10,750 zoned acres across 18 districts. Shares are of zoned land, so parcels the release leaves unclassified are excluded from the mix.
- Refresh
- The monthly aggregates close at the end of the previous month, so 31 August 2026 — not today — is the honest last update.
- Known limitations
- office vacancy is reported at Midwest region level, retail vacancy is reported at Midwest region level and industrial vacancy is reported at Midwest 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 August 2026 · report a data issue
