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    Rock County, WI Office Spaces for Lease

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    Downtown Janesville Office Space
    Updated: Nov 23, 2025
    Downtown Janesville Office Space

    100 N Main St, Janesville, WI

    $18 SF/Yr
    1,609 sqft
    50 surface parking spaces
    Located in the heart of Downtown Janesville
    Easy access to Riverwalk
    Spacious, landscaped courtyard
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    Innovative Loft-Style Office and Hub
    Updated: Apr 15
    Innovative Loft-Style Office and Hub

    525-705 3rd St, Beloit, WI 53511

    Contact for pricing
    1,768 sqft
    750,000+ square foot complex offering vast space.
    Loft‑style offices and creative hubs blend historical industrial character.
    Site of the former Beloit Corporation, a global leader in paper‑making machinery.
    Transformed into a diverse business ecosystem.
    Renovated since 2002, with artful conversion of former industrial spaces.
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    Class A Medical Office Space
    Class A Medical Office Space

    2102 Freeman Pkwy, Beloit, WI

    Contact for pricing
    6,145 sqft

    Newly constructed medical office space in Beloit, Wisconsin.

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    Turn Any Listing Into an Investment Snapshot Owner equity, real caprate, demand score for every listing. Go To Analytics Center
    Revitalized Industrial Space for Lease
    Revitalized Industrial Space for Lease

    655,690,705 & 525 3rd St, Beloit, WI 53511

    $18 SF/Yr
    750,000 sqft

    Unique loft-style offices and creative hubs in Beloit, WI.

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    Office Space at Johnson Bank
    Office Space at Johnson Bank

    2021 Holiday Drive, Janesville, WI 53545

    Contact for pricing

    Office space available for rent at 2021 Holiday Drive.

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    Beloit Professional Building Office Suite
    Beloit Professional Building Office Suite

    2797 Prairie Ave, Beloit, WI 53511

    Contact for pricing
    2,208 sqft

    Multi-tenant professional building with ample parking and good signage.

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    Historic Ironworks: Loft-Style Creative Spaces
    Historic Ironworks: Loft-Style Creative Spaces

    801 4th St, Beloit, WI 53511

    Contact for pricing
    750,000 sqft

    Renovated industrial complex offering unique loft-style offices and creative spaces.

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    Janesville Office Suite For Lease
    Janesville Office Suite For Lease

    1404 Creston Park Dr, Janesville, WI

    $12.50 SF/Yr
    1,460 sqft

    Professional office suite available in a multi-tenant building.

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    Janesville Office or Retail Space
    Janesville Office or Retail Space

    4407 Milton Ave, Janesville, WI 53546

    $15 SF/Yr

    Office or retail space for lease in Janesville, WI.

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    Based on your search, we've compiled 20 Potential Opportunities for your consideration. Besides 9 Active listings in Rock County, WI, we suggest exploring alternatives. Similar 7 Properties for Sales.

    Similar Spaces for Sale in Rock County, WI

    Consider Similar Space for Sale. We found 7 Spaces matching your search parameters.

    Downtown Office Building with Two Suites
    Downtown Office Building with Two Suites

    123 N Jackson Street, Janesville, WI 53548

    $329,000
    1,968 sqft 0.10 AC lot

    Renovated office property with two separate suites, shared renovated restrooms, and new exterior and interior finishes.

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    Freestanding Commercial Building with Drive-Thru
    Freestanding Commercial Building with Drive-Thru

    1795 S Madison Rd Beloit, WI 53511, Beloit, WI 53511

    $698,000
    4,388 sqft 1.50 AC lot

    4,388 SF building on 1.5 acres with drive-thru.

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    Freestanding Office Building with Drive-Thru
    Freestanding Office Building with Drive-Thru

    2636 US Hwy 51, Janesville, WI 53546

    $698,000
    2,606 sqft 1.00 AC lot

    2,606 SF office building with drive-thru on one acre.

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    Freestanding Building on West Court
    Freestanding Building on West Court

    2100 W Court St, Janesville, WI 53545

    $349,500
    2,161 sqft

    Versatile 2,161 SF building on high-visibility corner.

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    Three-Story Brick Office Building
    Three-Story Brick Office Building

    205 W Grand Avenue, Beloit, WI 53511

    $85,000
    0.13 AC lot

    Three-story brick office building with forced-air natural gas heat and downtown Beloit zoning (CBD-1).

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    Income-Producing Beloit Retail Strip Center
    Income-Producing Beloit Retail Strip Center

    1517 E Huebbe Pkwy, Beloit, WI 53511

    $430,000
    6 sqft

    Fully leased office and retail strip center in Beloit, Wisconsin.

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    Three-Story Brick Office Building
    Three-Story Brick Office Building

    205 W Grand Avenue, Beloit, WI 53511

    $85,000
    0.13 AC lot

    Three-story brick commercial office building with forced air natural gas heat; upper floors need remodeling.

    View details

    Potential Development Sites for Consideration

    Can't find the perfect fit? These Land listings present an alternative path: the potential to develop a property for your specific goals.

    Important: These AI-suggestions are a starting point, not a guarantee of permitted use. All zoning, permitting, and land use information must be independently verified by you with the appropriate local authorities before making any commitments.

    Plainfield Commercial Land For Rent
    Plainfield Commercial Land For Rent

    SW corner of Rte 59 & Fraser Road, Plainfield, IL 60586

    Contact for pricing

    6.491 acre commercial land available for rent in Plainfield, IL.

    View details
    Vacant Lot on N Mohawk
    Vacant Lot on N Mohawk

    1301 N Mohawk St, Chicago, IL 60610

    Contact for pricing
    2,402 sqft

    Vacant lot available for lease in Chicago, IL.

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    Build-to-Suit Commercial Land Parcel
    Build-to-Suit Commercial Land Parcel

    315 E Superior Street, Alma, MI 48801

    Contact for pricing

    Up to 0.34 acres of commercially zoned land for a customized build-to-suit in downtown Alma.

    View details
    Waukee Pad Site For Lease
    Waukee Pad Site For Lease

    405 E Hickman Rd, Waukee, IA 50263

    Contact for pricing

    1.1-acre pad site available for ground lease or build-to-suit.

    View details

    Rock County, WI Office Spaces Market Trends and Statistics

    Explore Office Spaces leasing options in Rock County, WI with 9 listings featured on our commercial real estate exchange. The current inventory includes 753,069 square feet of properties with an estimated lease value of $48.50 SF/Yr.

    Estimated lease rates for Office Spaces in Rock County, WI begin at $12.50 SF/Yr, with an average of $16.17 SF/Yr and extend to $18 SF/Yr.
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