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Character-Rich Office Building
For Sale
$1,900,000

711 21st Street, Prairie du Sac, WI 53578

Business/Comm, Prairie du Sac, WI

Property Size11,020 SF
Lot Size0.85 Acres
Price / SF$172.41
Days on Market192

Property Features for 711 21st Street

General Information

Property type Commercial Sale
Property subtype Other
Zoning Commercial
Security features Security Lighting
Interior features Passenger elevator, Private Restrooms, Shared Restrooms, Reception area, Internal sprinkler, Security lighting, Private office(s)
Accessibility Accessible Elevator Installed
Lot features Free standing, Residential area
Directions US Hwy 12 towards Baraboo, Right on CO RD PF, Left on 21st Street.
Subdivision PRAIRIE DU SAC - V
Standard status Active
APN 172-0936-81510
Size 11,020 SF
Lot size 0.85 Acres

Taxes and HOA fees

Tax Year 2024
Tax Annual Amount 17169

Amenities

full kitchen
theater room
exercise room
balconies
porches
standby generator
dual grand staircases

Building Details

Year built 2004
Number of units 1
Roof type Composition
Listing Agency: Bunbury & Assoc, REALTORS
Listed By: Daleen Heffron · License #3708790
Added: Apr 8 Changed: Oct 14 Last Checked: Oct 16 at 8:06PM
MLS# 2019582

Copyright © 2026 REALTORS® Association of South Central Wisconsin. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

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Investment Insights

Based on property information with market context.

Built in 2004, this 11,020-square-foot office building presents a distinctive three-level configuration with architectural elements uncommon in conventional workplace properties. The interior includes a reception area, private offices, a full kitchen with high-end appliances, three full bathrooms, a theater room, an exercise room, balconies, and two porches. An elevator serves all levels, while an accessible elevator, internal sprinkler system, security lighting, and a large standby generator support building operations. Composition roofing is in place, and the property includes private and shared restroom facilities.

Located at 711 21st Street in Prairie du Sac, Wisconsin, the property occupies a 0.85-acre parcel. Its design incorporates expansive windows, dual staircases, 16 exterior columns, a gold chandelier, and indirect lighting, creating a setting that differs from a standard office buildout. Commercial zoning is identified for the property.

Key Highlights

  • 11,020‑square‑foot office building completed in 2004
  • Three‑level layout with elevator access to every floor
  • Full kitchen, theater room, exercise room, balconies, and two porches

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$108,305
Cap Rate
5.70%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$2,166,100 $2.2M
Cap Rate 7%
$1,547,214 $1.5M
Cap Rate 9%
$1,203,389 $1.2M
Market Conditions
NOI Build-Up for 11,020 SF
Gross rent
$185.1K $16.80/SF
− Vacancy
−$40.7K −$3.70/SF
EGI
$144.4K $13.10/SF
− OpEx
−$36.1K −$3.28/SF
NOI
$108.3K $9.83/SF
Area
Sauk County, WI
Vacancy
22.00%
Lease Rate
$16.80 /SF/Yr
Expense Ratio
25.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$2,166,100
Cap Rate 7%
$1,547,214
Cap Rate 9%
$1,203,389

Alternative Uses

Best Use
Office B
$1.55M
$1.35M – $1.81M (±1% cap)
NOI $108,305 @ 7.0% cap · market cap 5.70%
Second Best
—
—
no second resolved use
Theoretical Best
Office A
$2.23M
$1.95M – $2.60M (±1% cap)
NOI $156,149 @ 7.0% cap · market cap 8.22%
Zoning and permitted uses should be independently verified with authorities. How Realmo checks its estimates

Property Analytics

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Open Analytics

Current Use

American Data (Bike/Boat/Book/etc) Store

Suggested Use

Top Pick Real Estate Agency Law Firm Restaurant HVAC Service Electrical Service Grocery & Convenience Store

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Location Intelligence

Trade Area within ½ mile

242
Businesses Nearby

Demographics for 53578, WI

6,556
Population
2,779
Households
2.4
Avg Household Size
42
Median Age
41%
College-Educated
95%
High-School Grad
43.1 sq mi
ZIP Area
152
Density / Sq Mi
$100,194
Median Household Income
$51,196
Median Earnings
$1,141
Median Rent
$333,800
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics

Market

Vacancy Rate% for Office in Midwest region

13.7% 2019
15.6% 2020
17.1% 2021
18.9% 2022
21% 2023
22% 2024
21.3% 2025

Frequently Asked Questions

What type of property is this?
Office building - Three-level commercial office property with an elevator, private offices, balconies, and extensive hospitality-style amenities.
Where is this office building located?
The property is located at 711 21st Street Prairie du Sac, WI.
What is the asking price?
The asking price for this property is $1,900,000.
What are key features of this property?
This property features: 11,020‑square‑foot office building completed in 2004; Three‑level layout with elevator access to every floor; Full kitchen, theater room, exercise room, balconies, and two porches
More about this property
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