Historic Two-Story Office
728 6th St Rapid City, SD 57701
728 6th St, Rapid City, SD, 57701
$735,000
For Sale
$735,000
Two-story office building with original wood finishes, leaded-glass transom windows, and an unfinished basement for storage.
Property Size5,896 SF
Price / SF$124.66
Days on Market140
Property Features for 728 6th St
General Information
- Standard status
- Active
- Size
- 5,896 SF
Listing agency
SUN REAL ESTATE
(605) 484-5226
Listed by
ELLI THURSTON
(605) 484-5226
Source
Exprealty
Added: Mar 3 Updated: Jul 21 at 5:44PM Checked: Jul 21 at 5:44PM
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 SUN REAL ESTATE
Investment Insights
Based on property information with market context.
The Michael Quinn House is a preserved historic office building constructed in 1914. The property features concrete brick construction, original wood floors and doors, and leaded-glass transom windows along with seeded (historic) glass windows that reflect its early 20th-century character. The interior includes a main level with three separate entrances (front, west side, and rear), a reception/secretarial area, a large front office suite, additional private offices, a spacious conference room, a kitchenette area, and a half bathroom. The second level offers an expansive open layout suitable for flexible office or equipment use. An additional full unfinished basement provides storage, archives, or future expansion opportunities, including a cellar.
The building is located on the corner of Quincy and 6th Street in Downtown Rapid City within the Central Business District. The property also includes a wrap-around porch for sheltered outdoor space and on-site downtown parking for convenient daily access.
This offering is listed on the Historic Register. The wood shingle roof was replaced approximately 10 years ago, supporting long-term building maintenance while retaining the property’s original architectural integrity and period details.
The building is located on the corner of Quincy and 6th Street in Downtown Rapid City within the Central Business District. The property also includes a wrap-around porch for sheltered outdoor space and on-site downtown parking for convenient daily access.
This offering is listed on the Historic Register. The wood shingle roof was replaced approximately 10 years ago, supporting long-term building maintenance while retaining the property’s original architectural integrity and period details.
Key Highlights
- Historic two‑story commercial office building constructed in 1914, on 6th Street in Rapid City’s Central Business District
- Approximately 3,864 SF premium office space plus 1,932 SF unfinished basement for storage, archives, or future expansion
- Prairie‑style concrete brick construction with original wood floors and doors, plus leaded‑glass transom windows and historic seeded glass windows
Local Financial Insights For Office B
Simulate Cap Rate and NOI
NOI Build-Up
- Vacancy
- income lost from leasable area expected to sit empty during the year — subtracted from gross rent.
- EGI (Effective Gross Income)
- gross rent minus vacancy losses — the realistic income before paying operating costs.
- OpEx (Operating Expenses)
- recurring costs to operate the property (property tax, insurance, utilities, maintenance, management) — excludes financing and capital improvements.
- NOI (Net Operating Income)
- income a property generates after operating costs but before financing and taxes.
| Component | $ | $/SF |
|---|---|---|
| Gross rent | $88.4k | $15.00 |
| − Vacancy | −$13.3k | −$2.25 |
| EGI | $75.2k | $12.75 |
| − OpEx | −$18.8k | −$3.19 |
| NOI | $56.4k | $9.56 |
5,896 SF · lease $15.00/SF/yr · vacancy 15.00% · expense 25.00%
Alternative Uses
Best Use
Office B
$805.4K
$704.8K – $939.7K
NOI $56,381 @ 7.0% cap · market cap 7.67%
Second Best
—
—
no second resolved use
Theoretical Best
Specialty Retail
$1.07M
$935.3K – $1.25M
NOI $74,820 @ 7.0% cap · market cap 10.18%
Zoning and permitted uses should be independently verified with local authorities.
Property Analytics
Location Intelligence
Current Use by Public Records
Wyss Associates Inc
Landscaping
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FAQs
What type of property is this?
Office building - Two-story office building with original wood finishes, leaded-glass transom windows, and an unfinished basement for storage.
Where is this office building located?
The property is located at 728 6th St Rapid City, SD.
What is the asking price?
The asking price for this property is $735,000.
What are key features of this property?
This property features: Historic two‑story commercial office building constructed in 1914, on 6th Street in Rapid City’s Central Business District; Approximately 3,864 SF premium office space plus 1,932 SF unfinished basement for storage, archives, or future expansion; Prairie‑style concrete brick construction with original wood floors and doors, plus leaded‑glass transom windows and historic seeded glass windows
