Boulder Homes with Triplex Subtype

Welcome to Boulder County, Colorado, a picturesque region nestled at the foothills of the majestic Rocky Mountains. Known for its stunning natural beauty, vibrant cultural scene, and an active outdoor lifestyle, Boulder offers a unique blend of urban amenities and outdoor adventures. The county is renowned for its breathtaking landscapes, with numerous hiking and biking trails, parks, and open spaces that beckon nature enthusiasts year-round.

Boulder is also home to the prestigious University of Colorado, which adds to the lively atmosphere, providing a rich array of dining, shopping, and entertainment options. The charming Pearl Street Mall, with its eclectic shops and street performers, is a must-visit for both locals and visitors alike. Additionally, the area boasts a strong sense of community, with farmers’ markets, art festivals, and various events that celebrate the local culture.

For those seeking a unique investment opportunity, homes with a triplex subtype in Boulder County offer an attractive option. These properties not only provide a comfortable living space but also the potential for rental income. Triplexes are ideal for multi-generational families or investors looking to capitalize on the high demand for rental housing in this desirable area. With a triplex, you can enjoy the benefits of homeownership while diversifying your investment portfolio.

Whether you’re drawn to the stunning surroundings, the vibrant community, or the potential of triplex living, Boulder County has something for everyone. Explore this remarkable area and discover your perfect home today!

Newest Boulder Homes with Triplex Subtype

$3,850,000

IR1067393 MLS

The Unique Apartment Group is pleased to present 1127 12th Street, a 12-bed, 4-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. The property is currently leased to a fraternity as its main house, 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: the exterior deck was replaced with Trex decking in 2024, two bathrooms were fully remodeled in 2025, and a $120,000 interior modernization was completed in 2026, including a full electrical and panel upgrade, drywall replacement, fresh paint, and general maintenance.Beyond in-place cash flow, the property offers long-term development upside. Zoned RH-5 (Residential High Density) on a lot, it benefits from Boulder's 2025 zoning amendments eliminating parking minimums, minimum land area per dwelling unit, and occupancy limits. A 2020 Landmark Alteration Certificate for rear additions sympathetic to the historic 1899 structure established design precedent with City staff and the Landmarks Design Review Committee, though that approval has expired and would need refreshing. Inclusionary housing requirements and Landmarks review remain part of the entitlement path, but the zoning framework and prior design work give the next owner a clear runway to expand density.

1127 12th Street, Boulder

$2,099,000

IR1066866 MLS

A rare investment opportunity in the heart of downtown Boulder, this charming historic triplex is situated on a large lot and features three separate units. One unit offers 3 bedrooms and 2 baths, the second features 2 bedrooms and 1 bath, and the third is a studio. Beautiful exposed brick walls add warmth and character throughout, highlighting the property's historic appeal. Each residence offers a functional layout with comfortable living spaces and the convenience of its own laundry. Six off-street parking spaces provide a valuable amenity in this sought-after downtown location. Currently rented through July 2027, this is a great opportunity for an investor looking for an established income-producing property in one of Boulder's most desirable locations. Enjoy easy access to restaurants, shops, entertainment, trails, and everything downtown Boulder has to offer.

1845 18th Street, Boulder

$1,200,000

IR1065047 MLS

Excellent investment opportunity for INVESTORS, 1031 EXCHANGE BUYERS or an OWNER OCCUPANT looking for rental income. This East Boulder Triplex is in a quiet location near the Flatirons Golf Course and offers 3 Units, all with 3 bedrooms, 1 1/2 baths and 2-car attached garages. All 3 units are the same floor plan, with a cozy kitchen, spacious living/dining area with fireplace, 1/2 bath and full size washer/dryer laundry on the main-level. The upper-level has 3 generous sized bedrooms and a full bath with the primary bedroom having an additional private sink/vanity, and walk-in closet. Each unit has an attached 2-car garage & a private enclosed patio/yard space, and A/C. There is also additional parking for tenants or guests. The kitchens have electric ranges, dishwashers, & refrigerators. Units B & C are currently rented for $2,300 & $2,450/month; Unit A has new carpet, paint, new LVP flooring in the kitchen & laundry and new oven & dishwasher. Should rent for $2,600/month. Owner pays water/sewer; tenant pays all other utilities.

5575 Pennsylvania Avenue, Boulder

$2,058,000

7 Beds ⋅ 5 Baths ⋅ 4312354 MLS

Perfectly positioned along North Boulder Park in the heart of Newlands, this exceptional triplex presents a rare opportunity to own an income-producing property in one of Boulder's most coveted neighborhoods. The property has been meticulously maintained and thoughtfully updated, with extensive recent capital improvements that include a new sewer line, windows, mechanical upgrades, electrical improvements, appliances, landscaping, fencing, sidewalk replacement, and significant infrastructure enhancements. Well-maintained interiors, beautifully landscaped grounds, and an irreplaceable location have attracted quality tenants and supported stable occupancy. Residents enjoy direct access to North Boulder Park and are just moments from neighborhood shops, acclaimed restaurants, hiking trails, and downtown Boulder. Opportunities to acquire a turnkey multi-family asset in such a premier Boulder location are exceedingly rare, offering both immediate income potential and long-term appreciation in one of the city's most sought-after neighborhoods.

2725 8th Street, Boulder

$2,058,000

IR1061816 MLS

2725 8th Street, Boulder

$2,537,000

IR1057694 MLS

Well-maintained and high-performing triplex in a Williams Village neighborhood, offering a rare combination of high in-place income, long-term tenant stability, and future upside. Each of the three units features 5 bedrooms and 2 bathrooms, resulting in an income profile that outperforms that of typical small multifamily properties. The property has achieved 100% occupancy during ownership, with a consistent history of tenant retention and steady rent growth. Current leases are in place through August 2027, providing immediate income stability for a new owner. The tenant base has historically included academically focused renters, contributing to lower turnover and reliable performance. Extensive capital improvements have been completed over time, including roof replacement, updated windows, remodeled kitchens and bathrooms, furnace upgrades, sump pumps, and appliance replacement. The result is a well-cared-for asset with minimal deferred maintenance. Located in an established residential setting with convenient access to transit along Baseline Road, bike routes, and nearby amenities, including parks, recreation, and neighborhood shopping. The property is also within close proximity to the University of Colorado, supporting consistent rental demand. Additional upside potential exists through interior updates to one unit and continued rent optimization over time. RM-2 zoning allows for flexibility in future use (subject to City of Boulder approval), adding long-term optionality. A compelling opportunity for investors seeking stable income, strong rental fundamentals, and a well-maintained asset in one of Boulder's most desirable rental markets. Financials: Cap Rate - 5.5; GRM - 14.14; NOI - $139,582; Vacancy Rate - 0.

650-654 Inca Parkway, Boulder

$2,997,500

IR1056392 MLS

Exceptional investment opportunity on The Hill with this 8-bedroom rental property comprised of upper and lower level units. Recent improvements include a new roof in 2022, a kitchen updated approximately five years ago with newer cabinets and appliances, and a recently updated bathroom. Ideally located just two blocks from Chautauqua Park and close to campus, this property offers a welcoming front porch and a terrace with mountain views off the larger bedroom. Rare combination of size, layout, and location in one of Boulder's most sought-after rental areas.

856 10th Street, Boulder

$1,399,000

IR1056171 MLS

Opportunity meets upside in this rare tri-plex investment property in the highly desirable Frasier Meadows neighborhood of Boulder. Ideally located just minutes from University of Colorado Boulder (Go Buffs!), this income-producing property offers strong rental appeal in one of Boulder's most sought-after areas. All three units are currently leased, providing immediate, consistent income from day one. Tenants enjoy a unique set of features rarely found in multi-family properties: each unit includes its own covered carport parking space, a private storage closet, and a fenced yard with direct access-an ideal setup for privacy, pets, and outdoor living. While the property is being sold in as-is condition, it presents an excellent opportunity for updates & improvements for a cash buyer, the fundamentals are already in place for a savvy investor to add value and maximize returns. With Boulder's consistently strong rental market and proximity to shopping, dining, parks, and convenient transportation options, this tri-plex is perfectly positioned for long-term appreciation and cash flow growth. Whether you're looking to renovate, reposition, or simply hold as a solid income property, this is a compelling opportunity for a cash buyer to invest in a prime Boulder location with built-in demand and undeniable potential.

4425 Comanche Drive, Boulder

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