1139 12th Street Boulder, CO ^$ 3,310,000

1139 12th Street

^$ 3,310,000

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Recently Listed New Construction

1139 12th Street

Boulder, CO, 80302

^$ 3,310,000

Studio Baths0.0 Sq 3,898

Monthly Estimate*

^$ 20,900

Listed by Unique Properties

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Studio

Multi-Family Home for sale in Boulder, CO

for $3,310,000. This 3,898 square foot home was built in 1899 on a lot size of 0.14.

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.

Multi-Family Active

Price

^$ 3,310,000

Bedrooms

Studio

Property Type

Multi-Family

Taxes

^$ 14,354

Style

Lot Size

0.14

Year Built

1899

Town/City

Boulder

County/Region

Boulder

MLS | Web ID

IR1067389

Features

General

Heating Hot Water

Utilities Electricity Available Electricity Connected Natural Gas Available Natural Gas Connected

Possession Closing/DOD

Roof Composition

Zoning RH-5

Construction Materials Stone Frame

Exclusions Tenant's Personal property

Year Built 1899

Levels Two

Property Subtype Duplex

Tax Year 2025

Ownership Individual

Gross Income 19950

County Boulder

Net Operating Income 179144

Operating Expense 14354

Property Type Residential Income

HOA N

Subdivision Name University Terrace

Possible Use Multi-Family Residential

Status Active

High School Boulder

City Boulder

High School District Boulder Valley RE 2

Number Of Units Total 2

Lot Size Square Feet 6196

Listing Terms Cash Conventional

Elementary School Boulder Community School/Integrated Studies

Tax Annual Amount 14354

Middle/Junior High School Other

Concessions No

Standard Status Active

Occupancy Type Tenant

Elementary School District Boulder Valley RE 2

Cap Rate 5.65

Interior

Basement Full

Furnished Y/N Unfurnished

Basement (Y/N) Y

Main Level Bedrooms 0

Exterior

Water Source Public

Total Parking 7

Building Area Total 3898

Lot Size Acres 0.14

Road Frontage Type Public

Internal Only

Street Number 1 1139

* Excluded Features

List By

Unique Properties

Broker

(303) 645-4796

Phone

Affordability Calculator

$22,096

Per Month

Monthly Principal & Interest: $20,900
Monthly Property Taxes: $1,196
Monthly Home Insurance: --

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Yearly Home Insurance

Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

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Nearby

Trends
Schools

Multi-family listings in Boulder, CO

Average List Price ^$2,388,735

Percent of Sale Price 28%

About Boulder, CO

102,151 Population

6% Since 2002

^$65,436 Median Income

31.88 Median Age

18% Households with Children

View more area information

Trends Information provided by ATTOM Data Solutions.

5379956 Elementary School

1956938 Middle School

Boulder High School High School

See complete school information

Pricing History

Date	Price	Price Change	Description
8/27/2026	$3,310,000		Listed Price

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1139 12th Street, Boulder, CO, 80302 is a Multi-Family Home for sale at $3,310,000 with 3,898 sqft and a lot size of 0.14. 1139 12th Street is a studio with 0.0 baths and was built in 1899. The property's zip code is 80302 which is in Boulder, CO

*Information deemed reliable but not guaranteed.

Financial calculator disclaimer: Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

The data relating to real estate on this web site comes in part from the Internet Data eXchange (IDX) Program of the REcolorado. Real estate listings held by firms other than Weichert Realtors are marked with the IDX logo and detailed information about them includes the Listing Broker’s Firm Name.

The information being provided is for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Data is updated as of 9/3/2026.

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PUBLISHER’S NOTICE: All real estate advertised herein is subject to the Federal Fair Housing Act and the Colorado Fair Housing Act, which Acts make it illegal to make or publish any advertisement that indicates any preference, limitation, or discrimination based on race, color, religion, sex, handicap, familial status, or national origin.

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1139 12th Street

Multi-Family Home for sale in Boulder, CO

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