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Sold for $2,221,785
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  • $2,221,785

    860 Union Avenue, Boulder, CO 80304

    5beds
    4,318sqft
    Single Family Residence
    Built in 2001
    6,412 Square Feet Lot
    $2,221,600 Zestimate®
    $515/sqft
    $5,781 Estimated rent

    Home value

    $2,221,600

    $2.09M - $2.35M

    $5,781/mo

    Zestimate® history
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    What's special

    Wood fencingClean linesComposite deckOpen-concept main levelPremium pergolaGenerous shelvingBuilt-in dressers
    A striking architectural residence in one of North Boulder’s most desirable pockets, perfectly positioned between Wonderland Lake and Foothills Community Park offering immediate access to miles of trails, open space, and some of North Boulder’s most coveted outdoor amenities. This 5-bedroom, 4-bath masterpiece offers over 4,000 square feet of thoughtfully designed living. Masterfully designed by architect JV DeSousa, the home is defined by clean lines, abundant natural light, soaring ceilings and a sense of volume and ease throughout. The open-concept main level is both refined and highly livable, anchored by custom artistic elements by local artist Osbourne Sculpture, including a statement fireplace, sculptural railing, and bespoke kitchen island. The flexible layout offers true versatility, featuring a spacious main-level office that easily converts to a guest suite with a built-in Murphy bed and access to an ensuite full bath. Function is seamlessly integrated with walk-in closets, built-in dressers, generous shelving, and a well-appointed laundry/mudroom with utility sink and custom cubbies. An oversized garage adds storage and convenience, while recent system upgrades, including two new furnaces, A/C systems, and solar panels producing energy beyond current usage, enhance efficiency and long-term value. Thoughtful capital improvements have been made throughout, including an extension of the outdoor living experience with a composite deck, wood fencing, a premium pergola, and low-water landscaping creating a private, low-maintenance setting designed for both relaxation and entertaining. The fully finished lower level expands the living space with a versatile layout, complete with built-in Murphy bunk beds, ideal for guests, media, or play. Fresh, intentionally minimal and architecturally distinct, this home offers a refined backdrop and a rare opportunity to own a truly enduring piece of North Boulder.

    Zillow last checked:

    Listing updated:

    Listed by:

    Alex Johnson 303-521-0187 alex.johnson@realatlas.com,

    Atlas Real Estate Group

    Bought with:

    Jill Grano, 100031566

    milehimodern - Boulder

    Source: REcolorado as distributed by MLS GRID,MLS#: 2663653MLS Logo

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 5
    • Bathrooms: 4
    • Full bathrooms: 4
    • Main level bathrooms: 1
    • Main level bedrooms: 1
    Bedroom
    • Level: Main
    • Area: 143 Square Feet
    • Dimensions: 11 x 13
    Bedroom
    • Level: Basement
    • Area: 143 Square Feet
    • Dimensions: 11 x 13
    Bedroom
    • Level: Upper
    • Area: 198 Square Feet
    • Dimensions: 11 x 18
    Bedroom
    • Level: Upper
    • Area: 156 Square Feet
    • Dimensions: 13 x 12
    Bedroom
    • Features: Primary Suite
    • Level: Upper
    • Area: 285 Square Feet
    • Dimensions: 19 x 15
    Bathroom
    • Level: Basement
    • Area: 60 Square Feet
    • Dimensions: 10 x 6
    Bathroom
    • Level: Upper
    • Area: 55 Square Feet
    • Dimensions: 5 x 11
    Bathroom
    • Features: En Suite Bathroom, Primary Suite
    • Level: Upper
    • Area: 143 Square Feet
    • Dimensions: 13 x 11
    Bathroom
    • Features: En Suite Bathroom
    • Level: Main
    Family room
    • Description: Multi Purpose Space With Plenty Of Room To Entertain
    • Level: Basement
    • Area: 806 Square Feet
    • Dimensions: 31 x 26
    Great room
    • Description: Dramatic Vaulted Ceiling, Tons Of Natural Light
    • Level: Main
    • Area: 806 Square Feet
    • Dimensions: 31 x 26
    Kitchen
    • Level: Main
    Laundry
    • Level: Main
    • Area: 200 Square Feet
    • Dimensions: 20 x 10
    Utility room
    • Level: Basement
    • Area: 200 Square Feet
    • Dimensions: 20 x 10
    Heating
    • Forced Air
    Cooling
    • Central Air
    Appliances
    • Included: Convection Oven, Cooktop, Dishwasher, Disposal, Dryer, Microwave, Refrigerator, Washer
    • Laundry: In Unit
    Features
    • Entrance Foyer, Granite Counters, High Speed Internet, Kitchen Island, Open Floorplan, Radon Mitigation System, Smart Thermostat, Vaulted Ceiling(s), Walk-In Closet(s)
    • Flooring: Carpet, Laminate, Wood
    • Basement: Finished
    • Number of fireplaces: 1
    • Fireplace features: Gas
    Interior area
    • Total structure area: 4,318
    • Total interior livable area: 4,318 sqft
    • Finished area above ground: 2,940
    • Finished area below ground: 900

    Property

    Parking
    • Total spaces: 2
    • Parking features: Garage - Attached
    • Attached garage spaces: 2
    Features
    • Levels: Two
    • Stories: 2
    • Patio & porch: Covered
    • Exterior features: Garden, Lighting, Private Yard
    • Fencing: Full
    Lot
    • Size: 6,412 Square Feet
    • Features: Landscaped, Many Trees, Sprinklers In Front, Sprinklers In Rear
    Details
    • Parcel number: R0034008
    • Special conditions: Standard

    Construction

    Type & style
    • Home type: SingleFamily
    • Architectural style: Contemporary
    • Property subtype: Single Family Residence
    Materials
    • Frame, Stone, Stucco
    • Roof: Composition
    Condition
    • Year built: 2001

    Utilities & green energy

    • Sewer: Public Sewer
    • Utilities for property: Cable Available, Electricity Connected

    Community & HOA

    Community
    • Subdivision: Makena Taylor
    HOA
    • Has HOA: No
    Location
    • Region: Boulder

    Financial & listing details

    • Price per square foot: $515/sqft
    • Tax assessed value: $2,274,000
    • Annual tax amount: $13,552
    • Date on market: 4/2/2026
    • Listing terms: Cash,Conventional
    • Exclusions: All Personal Property With The Exception Of Murphy Beds.
    • Ownership: Individual
    • Electric utility on property: Yes
    • Road surface type: Paved

    Price history

    DateEventPrice
    9/11/2026Sold$2,221,785-7.4%$515/sqft
    Source: REcolorado as distributed by MLS GRID #2663653 Report a problem
    8/4/2026Pending sale$2,400,000$556/sqft
    Source: REcolorado as distributed by MLS GRID #2663653 Report a problem
    7/21/2026Price change$2,400,000-2%$556/sqft
    Source: REcolorado as distributed by MLS GRID #2663653 Report a problem
    6/16/2026Price change$2,450,000-3%$567/sqft
    Source: REcolorado as distributed by MLS GRID #2663653 Report a problem
    5/15/2026Price change$2,525,000-2.7%$585/sqft
    Source: REcolorado as distributed by MLS GRID #2663653 Report a problem
    4/2/2026Listed for sale$2,595,000+95.8%$601/sqft
    Source: REcolorado as distributed by MLS GRID #2663653 Report a problem
    11/17/2015Sold$1,325,000-1.9%$307/sqft
    Source: IRES as distributed by MLS GRID #775274 Report a problem
    9/18/2015Listed for sale$1,350,000+59%$313/sqft
    Source: RE/MAX of Boulder #775274 Report a problem
    4/23/2002Sold$849,000$197/sqft
    Source: Public Record Report a problem

    Public tax history

    YearProperty taxesTax assessment
    2025$13,699 +1.8%$142,125 -10.9%
    2024$13,461 +13.5%$159,561 -1%
    2023$11,857 +4.9%$161,108 +26.2%
    2022$11,307 +20.8%$127,686 -2.8%
    2021$9,363 $131,359 +22.1%
    2020$9,363 +14.8%$107,565
    2019$8,158 $107,565 +14.3%
    2018$8,158 $94,097 -9.5%
    2017$8,158 +13.6%$104,029 +25.4%
    2016$7,179 +16.8%$82,928 +18.5%
    2015$6,145 +17.8%$69,992
    2014$5,216 -20.9%$69,992
    2013$6,595 +0.9%$69,992 -11.1%
    2012$6,537 +3.1%$78,724
    2011$6,337 +7.1%--
    2010$5,918 +12.4%$78,410 -8.3%
    2009$5,263 +3.5%$85,490 +3.9%
    2008$5,084 -3.3%$82,260
    2007$5,257 +3.9%$82,260
    2006$5,061 +8.9%$82,260
    2005$4,647 +0.7%$82,260 +8.2%
    2004$4,614 +27%$76,060
    2003$3,634 +134.6%$76,060 +46.1%
    2002$1,549 $52,070 -80.5%
    2001-- $267,700
    Find assessor info on the county website

    Neighborhood: North Wonderland

    Nearby schools

    GreatSchools rating
    Schools provided by the listing agent
    • Elementary: Foothill
    • Middle: Centennial
    • 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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    Estimated market value
    $2,221,600
    Get a cash offer in 3 minutes
    Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
    Estimated market value
    $2,221,600