Commercial Real Estate Market in Janesville, WI
Updated monthly: sale, lease, property records, location trend, and more… · Last update: August 31
118 active listings and 1,850 off-market properties in Janesville, WI. Commercial property asks $86/SF to buy and $5.35/SF/Yr to lease.
Market Trends
Janesville, WI spans 178.6 square miles in Rock County, Wisconsin. Figures below refresh monthly; last updated 31 August 2026.
Office
Office vacancy in Janesville, WI runs 21.3% across the Midwest region in 2025, up from 13.7% in 2019.
Vacancy Rate % in Midwest region
Retail
Retail vacancy in Janesville, WI runs 6.3% across the Midwest region in 2025, down from 8% in 2020.
Vacancy Rate % in Midwest region
Industrial
Industrial vacancy in Janesville, WI 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 Janesville, WI 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
- Residential 53.5%
- Industrial 21.5%
- Open space 11.4%
- Commercial 10.4%
- Civic 2%
- Agricultural 1.2%
Largest Zones share of zoned land by district
Single Family Residence District
Light Industrial District
Conservancy District
Limited General Residence District
General Industrial District
Janesville, WI zones 22,541 acres across 23 districts. Commercial zoning covers 10.4% of zoned land, residential 53.5%, open space 11.4% and industrial 21.5%. The largest single district is Single Family Residence District at 38.2%. For commercial buyers the practical constraint is that only 31.8% of land carries a commercial or industrial designation.
Single Family Residence District (R1)
The R1 District is created to allow for low density residential areas with limited concentrations of two family dwellings allowed by conditional use permit, The R1 district is generally mapped in outlying urban parts of the City
Market overview
Demographics & Economy
Janesville, WI has 73,741 residents in 32,880 households. Density runs 413 people per square mile. Median household income here is $72,906 and median gross rent $1,034 a month.
73,741
Population
32,880
Households
2.2
Avg Household Size
41
Median Age
27%
College-Educated
94%
High-School Grad
178.6 sq mi
ZIP Area
413
Density / Sq Mi
$72,906
Median Household Income
$43,523
Median Earnings
$1,034
Median Rent
$216,704
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Hanover | — | — |
| Afton | — | — |
| Milton | — | — |
| Avalon | — | — |
Commercial property in Janesville, WI asks $86/SF.
Frequently Asked Questions
What is the average price per square foot for commercial property in Janesville?
Commercial property in Janesville, WI asks an average of $86 per square foot. The 3 most recent recorded sales traded at a median of $83/SF, so asking sits 3% above the achieved median.
How much does it cost to lease commercial space in Janesville?
Asking lease rates in Janesville, WI average $5.35 per square foot per year.
What zoning applies to commercial property in Janesville?
Janesville, WI zones 22,541 acres across 23 districts, of which 10.4% is commercial and 21.5% industrial. The largest single district is Single Family Residence District at 38.2% of zoned land. The R1 District is created to allow for low density residential areas with limited concentrations of two family dwellings allowed by conditional use permit, The R1 district is generally mapped in outlying urban parts of the City Residential zoning covers 53.5% and open space 11.4%.
Where does Realmo's Janesville market data come from?
Realmo compiles Janesville, WI figures from 6 recent recorded sales, 101 active sale listings, 17 active lease listings, 1,850 tracked off-market properties, the current Janesville zoning release. Sale and lease figures refresh monthly; vacancy annually. Last updated 31 August 2026.
Methodology & data sources
- Asking prices and averages
- Computed from 101 active for-sale and 17 active for-lease listings in Janesville, WI. 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: 22,541 zoned acres across 23 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
