OPEN HOUSE SUNDAY 11:00 - 1:00. Nestled in Boulder’s coveted Mapleton Hill neighborhood, this delightful legally permitted duplex presents a rare opportunity to live steps from downtown Boulder while generating rental income. Just moments from Pearl Street, Dakota Ridge trailheads, and Mount Sanitas, this property blends historic charm with modern convenience.
Relax on the inviting front porch, savoring morning coffee while overlooking the meticulously manicured lawn. The upper unit features an open-concept layout with original hardwood floors, two generously sized bedrooms—one offering a peek at Mount Sanitas—and a beautifully remodeled bathroom. The modern kitchen boasts wood cabinetry and granite countertops.
The lower unit, accessible via a private entrance, offers a stylish and functional space with a full kitchen, spacious living area, two bedrooms, and a well-appointed bathroom. Three egress windows flood the space with natural light, creating a bright and welcoming atmosphere.
Step outside to the beautifully landscaped backyard, an urban oasis framed by mature trees, ideal for relaxation or entertaining. The property also includes a rare two-car off-street parking pad, a coveted feature in this neighborhood.
Whether you’re drawn to the vibrant energy of Pearl Street, the serenity of nearby trails, or the income potential of this versatile duplex, 2507 9th St is a one-of-a-kind Boulder gem waiting for you!
For sale
$1,300,000
2507 9th Street, Boulder, CO 80304
4beds
1,932sqft
Est.:
Duplex
Built in 1910
3,688 Square Feet Lot
$1,296,800 Zestimate®
$673/sqft
$-- HOA
What's special
- 16 days
- on Zillow |
- 853 |
- 44 |
Zillow last checked: 7 hours ago
Listing updated: June 22, 2025 at 12:05pm
Listed by:
Tripp Howell 970-219-0679 Tripp@HowellHomesCO.com,
Compass - Denver
Source: REcolorado,MLS#: 6266575

Travel times
Tour with a buyer’s agent
Tour with a buyer’s agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 2
- Full bathrooms: 2
- Main level bathrooms: 1
- Main level bedrooms: 1
Bedroom
- Level: Upper
Bedroom
- Level: Basement
Bedroom
- Level: Basement
Bedroom
- Level: Main
Bathroom
- Level: Basement
Bathroom
- Level: Main
Dining room
- Level: Basement
Dining room
- Level: Main
Kitchen
- Level: Main
Kitchen
- Level: Basement
Laundry
- Level: Main
Living room
- Level: Basement
Living room
- Level: Main
Heating
- Forced Air
Cooling
- None
Appliances
- Included: Dishwasher, Dryer, Microwave, Range, Washer
Features
- Flooring: Carpet, Tile, Wood
- Basement: Finished
Interior area
- Total structure area: 1,932
- Total interior livable area: 1,932 sqft
- Finished area above ground: 1,232
- Finished area below ground: 700
Property
Parking
- Total spaces: 2
- Details: Off Street Spaces: 2
Features
- Levels: Two
- Stories: 2
- Patio & porch: Front Porch
Lot
- Size: 3,688 Square Feet
Details
- Parcel number: R0005975
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Duplex
Materials
- Stone, Stucco
Condition
- Updated/Remodeled
- Year built: 1910
Utilities & green energy
- Sewer: Public Sewer
Community & HOA
Community
- Subdivision: Mapleton Hill
HOA
- Has HOA: No
Location
- Region: Boulder
Financial & listing details
- Price per square foot: $673/sqft
- Tax assessed value: $1,340,900
- Annual tax amount: $7,729
- Date on market: 6/14/2025
- Listing terms: 1031 Exchange,Cash,Conventional,Jumbo,VA Loan
- Exclusions: Seller's Personal Property
- Ownership: Individual
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