Building Details

Year Built 2004

Listing Agency: Bunbury & Assoc, REALTORS

Listed By: Daleen Heffron · License #3708790 Show Phone

Source: Madisonareahomelistings

Added: Oct 7, 2025 Changed: Oct 1 Last Checked: Oct 12 at 7:53PM

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Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of Bunbury & Assoc, REALTORS

Investment Insights

Based on property information with market context.

Built in 2004, this three-level office property combines commercial construction with a residentially styled interior. Expansive windows, two grand staircases, a gold chandelier, indirect lighting, and 16 exterior columns define the architecture. The layout includes a full kitchen with high-end appliances, three full baths, an elevator serving all levels, a theater room, an exercise room, balconies, and two porches. A large standby generator is also included.

The property occupies approximately 2.8 acres at 711 21st in Prairie Du Sac, Wisconsin, and is currently zoned Hwy Business. Its flexible configuration and substantial amenity package support a range of office-oriented uses, subject to applicable approvals. The parcel may offer division potential, also subject to approvals.

Key Highlights

• Three‑level office building constructed in 2004
• Approximately 2.8 acres with current Hwy Business zoning
• Elevator provides access to all 3 levels

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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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

Explore this area Business Placement

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

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

Questions? Ask Rey

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What type of property is this? Where is this office buildings located? What is the asking price? Find similar properties What are key features of this property?

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Frequently Asked Questions

What type of property is this?

Office building - Three-level office property with residential-style finishes, extensive windows, balconies, and a full kitchen.

Where is this office building located?

The property is located at 711 21st 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: Three‑level office building constructed in 2004; Approximately 2.8 acres with current Hwy Business zoning; Elevator provides access to all 3 levels