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    Boulder County, CO Duplexes for Sale

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    Duplex with Walkout Lower Level
    Updated: Sep 16
    Duplex with Walkout Lower Level

    1201 Spruce Ave, Longmont, CO 80501

    $719,900
    2,425 sqft 0.17 AC lot
    6 bedrooms and 3 full bathrooms across two living areas
    2,425 square feet on a 0.17‑acre lot
    Finished walkout lower level has 2 bedrooms and 1 bathroom
    Up to 8 vehicles, or 6 vehicles plus an RV, boat, trailer, or other recreational vehicles
    Each living area has its own fenced outdoor space
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    Duplex with Finished Basement
    Updated: Sep 10
    Duplex with Finished Basement

    810 E Baseline Rd, Lafayette, CO 80026

    $659,000
    2,471 sqft 0.09 AC lot
    Built in 2015 with 2,471 square feet of finished space
    Permitted finished basement with rec room, guest bedroom, 3/4 bath, and custom storage
    5‑year continuous rental history; most recently leased at $3,650/mo
    Detached 1‑car garage with heater plus private front and back yards
    Carrier Infinity HVAC with 98% AFUE furnace, 19 SEER AC, and 4 custom zones
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    Duplex with Remodeled Unit
    Duplex with Remodeled Unit

    1812 Lincoln Dr, Longmont, CO 80501

    $525,000
    1,792 sqft 0.10 AC lot

    One residence has updated flooring and carpet, while the adjoining unit is leased through June 2027.

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    Two-Unit Duplex With Detached Garages
    Two-Unit Duplex With Detached Garages

    1356-1358 Merl Place, Longmont, CO 80501

    $450,000
    1,768 sqft 0.23 AC lot

    Front and rear residences share matching two-bedroom layouts on a cul-de-sac lot.

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    Two-Unit Duplex Property
    Two-Unit Duplex Property

    1726 Meadow St, Longmont, CO 80501

    $550,000
    1,918 sqft 0.16 AC lot

    Two residential units feature eat-in kitchens, laundry hookups, patios, and off-street parking within R-2 zoning.

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    Duplex with Private Yards
    Duplex with Private Yards

    1225 S Coffman St, Longmont, CO 80501

    $599,000
    2,628 sqft 0.19 AC lot

    Each residence has a separate garage, fenced yard, and a three-bedroom, one-and-a-half-bath layout.

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    Modern Farmhouse Duplex
    Modern Farmhouse Duplex

    727 Kubat Ln, Longmont, CO 80503

    $849,900
    2,737 sqft

    Three bedrooms are arranged on the main level around an open kitchen, dining, and living area.

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    Old Town Lafayette Mixed-Use Property
    Old Town Lafayette Mixed-Use Property

    107 N Public Road, Lafayette, CO 80026

    $1,400,000
    5,595 sqft

    Mixed-use property in Old Town Lafayette with retail and residential.

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    Refreshed Duplex with Walkout Lower Level
    Refreshed Duplex with Walkout Lower Level

    1201 Spruce Ave, Longmont, CO 80501

    $719,900

    Updated duplex with flexible living arrangements, fenced outdoor areas, and live/work potential near Downtown Longmont.

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    Two-Story Duplex with Updated Unit
    Two-Story Duplex with Updated Unit

    1812 Lincoln Dr, Longmont, CO 80501

    $525,000

    Two residential units combine private patios, central air, appliances, laundry, and off-street parking in a shared-yard setting.

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    Historic Duplex Near University
    Historic Duplex Near University

    1843 Arapahoe Avenue 1 & 2, Boulder, CO 80302

    $1,495,000

    Two pre-leased units offer a professionally managed residential income property with separate living arrangements and off-street parking.

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    Longmont Duplex Investment
    Longmont Duplex Investment

    1726 Meadow Street, Longmont, CO 80501

    $550,000

    Two 2-bedroom, 1-bath units with eat-in kitchens, laundry, patios, and off-street parking sold as-is.

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    Mixed-Use Property in Old Town
    Mixed-Use Property in Old Town

    105 N Public Rd, Lafayette, CO 80026

    $1,400,000
    0.34 AC lot

    Versatile mixed-use property in a rapidly growing downtown area.

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    Remodeled Duplex with Income Potential
    Remodeled Duplex with Income Potential

    1225 S Coffman St, Longmont, CO 80501

    $599,000

    Turn-key duplex with modern upgrades, yards, and garage.

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    Updated Side-by-Side Duplex
    Updated Side-by-Side Duplex

    1806 17th Street, Boulder, CO 80302

    $1,630,000

    Side-by-side duplex with two 4-bed, 2-bath units featuring granite counters, stainless appliances, and laundry.

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    Two-Unit Duplex with Garages
    Two-Unit Duplex with Garages

    1936 Kimbark St, Longmont, CO 80501

    $495,000

    Matching residences offer practical layouts, individual garages, and established rental occupancy in Longmont.

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    Based on your search, we've compiled 16 Potential Opportunities for your consideration. Besides 16 Active listings in Boulder County, CO, we suggest exploring several alternatives:

    Boulder County, CO Duplexes Market Trends and Statistics

    Explore 16 duplexes for sale in Boulder County, CO, showcased through 16 active listings on our real estate platform. These investment opportunities span a total of 21,334 square feet of properties for sale, with an estimated market value of $13,166,700.

    Sale prices for two-family homes in Boulder County, CO start at $450,000, averaging $822,918, and reaching up to $1,630,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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    Featured Boulder County Real Estate Agencies

    Realmo connects you with licensed Boulder County CRE brokers providing property specifications, local market pricing, and commercial transaction underwriting support.

    8z Real Estate
    4041 Hanover Ave Suite 200 Boulder, CO 80305
    Phone: 13035433083
    8z.com
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