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$3,310,000 Sale Pending
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Property Description
The Unique Apartment Group is pleased to present 1139 12th Street, a 10-bed, 5-bath student housing investment on University Hill in Boulder, Colorado, steps from the CU Boulder campus and The Hill's retail, restaurant, and bar corridor. Demand consistently outpaces supply in this submarket: University Hill is geographically landlocked and largely built out, with zoning and topography sharply limiting new construction, while CU Boulder enrolls over 38,000 students against a persistent on-campus housing shortfall.The Hill operates on a pre-leasing cycle, with next year's leases typically executed the prior fall - giving ownership rare forward visibility into occupancy and income. The property is currently leased as a satellite house to a fraternity chapter, providing an organizational lease guarantee and a built-in occupancy pipeline through the chapter's recruitment cycle. Annual rent step-ups are the submarket norm, and the group lease configuration reduces turnover friction for a stabilized, hands-off cash flow profile.Ownership has invested meaningfully in recent years, minimizing near-term capital exposure for a buyer: a new backflow preventer and water shutoff were installed in 2024, and in 2025 both water heaters were replaced and one bathroom was fully remodeled.Beyond in-place cash flow, the property offers long-term development upside. Zoned RH-5 (Residential High Density), it benefits from Boulder's 2025 zoning amendments eliminating parking minimums, minimum land area per dwelling unit, and occupancy limits. Inclusionary housing requirements and Landmarks review remain part of the entitlement path, but the current zoning framework gives the next owner a runway to explore expanded density.
Full Property Details
Full Property Details for 1139 12th St
General
- Price: $3,310,000
- Taxes: $14,354 (2025)
- Status: Pending
- Type: Single Family
- Source: IRES
- MLS ID: 1067389
- Updated: 9/11/2026
- Added to Site: 42 day(s) ago
Interior
- Appliances: No Units Furnished
Parking
- Total Spaces: 7
Location
- Area: Boulder
- County: Boulder
- Subdivision: University Terrace
School Information
- School District: Boulder Valley Dist RE2
- Elementary School: Boulder Community
- Middle School: Other
- High School: Boulder
Heating & Cooling
- Heating Type: Hot Water
Utilities
- Gas: Yes
- Gas: Xcel
- Water: District
- Utility Description: Natural Gas Available, Electricity Available, Master Electric Meter, Master Gas Meter
Structural Information
- Construction: Frame, Stone
- Exterior Const.: Frame, Stone
- Basement: Yes
- Basement Desc.: Full
- Roof: Composition
- Square Feet: 3,898
- Sq. Ft. Source: Assessor
- Year Built: 1899
Lot Features
- Lot Size (Acres): 0.14
- Lot Size (Sq. Ft.): 6,196
- Frontage: City Street
- Potential Use: Single-Family, Multi-Family
- Zoning: RH-5
Financial Considerations
- Operating Expenses: $14,354
- Tax Amount: $14,354
- Tax Year: 2025
- Terms: Cash, Conventional
- Tenant Pays: Deposit
Disclosures and Reports
- Special Conditions: Private Owner
- Exclusions: Tenant's Personal property
- Property ID: R0003313
Listed by Unique Properties (303) 321-5888
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Schools
Schools serving 1139 12th St
School District:Boulder Valley School District Re-2
| Name | Grades | Distance |
|---|---|---|
Flatirons Elementary School 1150 7th Street, Boulder, CO 80302 | K-5 | 0.4 mi |
Manhattan Middle School Of The Arts And Academics 290 Manhattan Drive, Boulder, CO 80303 | 6-8 | 2.8 mi |
Boulder High School 1604 Arapahoe Avenue, Boulder, CO 80302 | 9-12 | 0.5 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 1139 12th St
Date
Details
Price
Change
Source
8/27/2026
Listed
$3,310,000
301.21%
MLS
10/13/2011
Sold
$825,000
—
Public Record
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Tax History
Tax History for 1139 12th St
Year
Property Taxes
Change
Tax Assessment
Change
2025
$14,354
—
$157,182
-3%
2025
$14,354
11%
$161,942
10%
2024
$12,925
2%
$147,065
-2%
2023
$12,700
31%
$150,750
46%
2022
$9,694
4%
$103,360
-5%
2021
$9,355
—
$108,680
-11%
2021
$9,355
8%
$121,550
22%
2018
$8,658
-17%
$99,864
-18%
2019
$10,418
24%
$121,550
22%
2017
$8,387
40%
$99,864
45%
2016
$5,972
6%
$68,990
—
2015
$5,655
—
$68,990
5%
2014
$5,646
2%
$65,670
—
2013
$5,522
—
$65,670
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 1139 12th St
1139 12th St, Boulder, CO 80302 (MLS# 1067389) is a Single Family property with 0 bedrooms and 0 full bathrooms. 1139 12th St is currently listed for $3,310,000 and was received on August 27, 2026. Want to learn more about 1139 12th St? Do you have questions about finding other Single Family real estate for sale in Boulder? You can browse all Boulder real estate or contact a Coldwell Banker agent to request more information.

