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Versatile Lakefront Headquarters Building
For Sale
$2,750,000

500 S 27th Street, Decatur, IL 62521

Former Illinois Power HQ with versatile space on 25.8 acres.

Property Size153,021 SF
Lot Size25.80 Acres
Price / SF$17.97
Days on Market150

Property Features for 500 S 27th Street

General Information

Standard status Active
Size 153,021 SF
Total Parking Spaces 500
Lot size 25.80 Acres
Zoning Other

Amenities

Two
yes
2
Gas Water Heater
Other
Finished, Unfinished, Full
Elevator(s), Kitchen Facilities
Owner
Public Sewer
no
Public
25.81
500
Acres
On Site
Fence
Asphalt
Basement
1015384
Brick

Building Details

Year Built 1958
Stories 2
Listing Agency: Brinkoetter REALTORS
Listed By: Josh Burgener · License #471008359
Source: Jburgenerrealty.idxbroker
Added: Mar 27 Changed: Aug 23 Last Checked: Aug 22 at 2:57PM

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 Brinkoetter REALTORS

Investment Insights

Based on property information with market context.

This property, formerly the Illinois Power Headquarters, is situated on 25.8 acres overlooking Lake Decatur. The building offers approximately 153,000 square feet of versatile space. Most recently, it served as a modern ministry and education campus. The multi-wing design integrates office infrastructure with commons areas, classrooms, hospitality spaces, and open multi-purpose rooms. Features include a glass-wrapped main lobby, a large café and gathering hall, and a commercial-grade kitchen. Numerous classrooms create an environment suitable for various potential uses. The property includes expansive parking and two out-buildings. Perimeter fencing encloses key portions of the grounds, and multiple entrances serve the parking areas. The buildings have a dumb waiter, a passenger elevator, and a service elevator. The out-buildings feature a total of 7 overhead doors and 2 sliding doors, along with 26 covered carports, making them suitable for fleet management. The property offers capacity and flexibility for expansion or redevelopment in a lake-adjacent, in-town setting.

Key Highlights

  • 25.8 acres overlooking Lake Decatur, offering a rare lake‑adjacent in‑town setting.
  • Approximately 153,000 square feet of highly versatile space suitable for various uses.
  • Multi‑wing design combining office infrastructure with commons, classrooms, hospitality areas, and multi‑purpose rooms.

Property Analytics

Current Use

GT Church Church Glad Tidings Assembly ... Church Tina Stephens Photographic ... Photography Service

Suggested Use

Top Pick Real Estate Agency Law Firm Restaurant Big Box & Wholesale Store Dental Office Hair Salon

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

96
Businesses Nearby

Demographics for 62521, IL

33,793
Population
16,169
Households
2.1
Avg Household Size
44
Median Age
22%
College-Educated
91%
High-School Grad
66.0 sq mi
ZIP Area
512
Density / Sq Mi
$66,848
Median Household Income
$41,945
Median Earnings
$857
Median Rent
$119,900
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
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Frequently Asked Questions

What type of property is this?
Mixed-use property - Former Illinois Power HQ with versatile space on 25.8 acres.
Where is this mixed-use property located?
The property is located at 500 S 27th Street Decatur, IL.
What is the asking price?
The asking price for this property is $2,750,000.
What are key features of this property?
This property features: 25.8 acres overlooking Lake Decatur, offering a rare lake‑adjacent in‑town setting.; Approximately 153,000 square feet of highly versatile space suitable for various uses.; Multi‑wing design combining office infrastructure with commons, classrooms, hospitality areas, and multi‑purpose rooms.
More about this property
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