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For sale
  • $375,000

    850 20th Street #404, Boulder, CO 80302

    1beds
    720sqft
    : 
    $2,856/mo
    Get pre-qualified
    Condominium
    Built in 1967
    -- sqft lot
    $-- Zestimate®
    $521/sqft
    $559/mo HOA

    What's special

    A Smart Investment in the Heart of Boulder Location, convenience, and long-term value come together in this well-positioned 1-bedroom, 1-bath condo in the quiet and secure San Marco North building. Just steps from CU Boulder, this property offers an ideal opportunity for buyers seeking a low-maintenance investment in one of Boulder’s most desirable and consistently sought-after locations. The location is truly hard to beat—with CU campus, Chautauqua, hiking and biking trails, The Hill, and Downtown Boulder all nearby. Whether you're looking for a property to enjoy yourself or a strategically located real estate investment, this condo offers the lifestyle and accessibility that help support enduring demand. The private outdoor deck extends the living space and provides peek-a-boo views of the mountains and CU campus. Residents also enjoy a secure building entrance, elevator access, common laundry, a storage locker, and one reserved parking space—valuable conveniences in Boulder. One of the property's standout features is the common rooftop terrace, where breathtaking panoramic views stretch across Boulder’s city lights and the iconic Flatirons. HOA dues include heat and water/sewer, helping simplify ownership and provide greater predictability for monthly expenses. For buyers looking beyond simply purchasing a home, this is an opportunity to own a piece of Boulder real estate in a location with enduring appeal. With its proximity to CU, outdoor recreation, Downtown Boulder, and everyday amenities, San Marco North offers the combination of location and convenience that can make a property a compelling long-term investment. An exceptional Boulder location. A low-maintenance lifestyle. A smart addition to your real estate portfolio.
    42 days
    110
    4

    Zillow last checked:

    Listing updated:

    Listed by:

    Hallie Rand 720-810-2931,

    Coldwell Banker Realty 24

    Source: REcolorado as distributed by MLS GRID,MLS#: 1584266MLS Logo

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 1
      • Bathrooms: 1
      • Full bathrooms: 1
      • Main level bathrooms: 1
      • Main level bedrooms: 1
      Bedroom
      • Level: Main
      Bathroom
      • Level: Main
      Heating
      • Baseboard
      Cooling
      • Air Conditioning-Room
      Appliances
      • Included: Convection Oven, Cooktop, Refrigerator
      Features
      • Has basement: No
      • Common walls with other units/homes: End Unit
      Interior area
      • Total structure area: 720
      • Total interior livable area: 720 sqft
      • Finished area above ground: 720
      Video & virtual tour

      Property

      Parking
      • Total spaces: 1
      • Details: Reserved Spaces: 1
      Features
      • Levels: One
      • Stories: 1
      • Exterior features: Balcony
      Details
      • Parcel number: R0083147
      • Special conditions: Standard

      Construction

      Type & style
      • Home type: Condo
      • Property subtype: Condominium
      • Attached to another structure: Yes
      Materials
      • Brick
      • Roof: Other
      Condition
      • Year built: 1967

      Utilities & green energy

      • Sewer: Public Sewer

      Community & HOA

      Community
      • Security: 24 Hour Security, Key Card Entry, Security Entrance
      • Subdivision: San Marco North Condominiums
      HOA
      • Has HOA: Yes
      • Amenities included: Elevator(s), Laundry, Storage
      • Services included: Reserve Fund, Heat, Maintenance Structure, Security, Sewer, Trash, Water
      • HOA fee: $559 monthly
      • HOA name: San Marco North HOA
      • HOA phone: 303-818-2407
      Location
      • Region: Boulder

      Financial & listing details

      • Price per square foot: $521/sqft
      • Tax assessed value: $415,700
      • Annual tax amount: $2,558
      • Date on market: 9/15/2026
      • Listing terms: Cash,Conventional
      • Exclusions: None
      • Ownership: Individual

        Estimated market value

        Not available

        Estimated sales range

        Not available

        Not available

        Price history

        DateEventPrice
        9/15/2026Listed for sale$375,000+19%$521/sqft
        Source: REcolorado as distributed by MLS GRID #1584266 Report a problem
        1/16/2019Sold$315,000+1.6%$438/sqft
        Source: IRES as distributed by MLS GRID #867464 Report a problem
        11/30/2018Pending sale$310,000$431/sqft
        Source: WK Real Estate #867464 Report a problem
        11/27/2018Listed for sale$310,000$431/sqft
        Source: WK Real Estate #5632457 Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025$2,145 +1.9%$25,981 -4.5%
        2024$2,106 -1.6%$27,199 -1%
        2023$2,140 +4.7%$27,463 +23.5%
        2022$2,044 +4.4%$22,240 -13.1%
        2021$1,958 $25,590 +13.8%
        2020$1,958 +9.7%$22,494
        2019$1,785 $22,494 +9.3%
        2018$1,785 $20,585 -9.5%
        2017$1,785 +42.5%$22,758 +57.3%
        2016$1,253 +5.6%$14,471 -11.3%
        2015$1,186 -13.5%$16,318
        2014$1,372 +12.1%$16,318
        2013$1,224 +0.9%$16,318 +11.7%
        2012$1,213 -0.6%$14,607
        2011$1,220 +7.1%--
        2010$1,139 +4%$15,090
        2009$1,095 +3.5%$15,090 -11.9%
        2008$1,058 +5.9%$17,120
        2007$999 +3.6%$17,120 +9.5%
        2006$964 +15%$15,640
        2005$839 +0.7%$15,640 +14%
        2004$833 +1.4%$13,720 -15.4%
        2003$821 +10.3%$16,210 +37.6%
        2002$744 $11,780 -90.8%
        2001-- $128,700
        Find assessor info on the county website

        Monthly payment

        Est. payment

        Payment breakdown

        Explore the cost of this home by adjusting the details. Changes won't be saved.
        All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
        HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
        See how much you could borrow to make a competitive offer.

        Climate risks

        Neighborhood: University Hill

        Getting around

        77 / 100
        Very Walkable
        61 / 100
        Good Transit

        Nearby schools

        GreatSchools rating
        Schools provided by the listing agent
        • Elementary: Flatirons
        • Middle: Manhattan
        • High: Boulder
        • District: Boulder Valley RE 2

        Source: REcolorado as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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