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Sold for $2,750,000
  • $2,750,000

    3945 Promontory Ct, Boulder, CO 80304

    4beds
    4,093sqft
    Mixed Use
    Built in 1984
    0.3 Acres Lot
    $2,653,100 Zestimate®
    $672/sqft
    $6,605 Estimated rent

    Home value

    $2,653,100

    $2.52M - $2.79M

    $6,605/mo

    Zestimate® history
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    What's special

    Oversized glass showerTwo new drivewaysGas rangeAll-new lightingWood-paneled vaulted ceilingComplete landscape redesignBuilt-in infrared sauna
    In the sought-after Wonderland Hills community of North Boulder, this 4,093-square-foot residence has been extensively renovated and pairs a turnkey main home with a permitted, income-producing ADU. Backing to the protected City of Boulder greenbelt, the home enjoys open-space and foothill views, remarkable privacy, and trail access. At its heart is a lovely, light-filled great room, opened up and crowned by a wood-paneled vaulted ceiling, with a wall of glass framing the open space and a gas fireplace set beneath a picture window. The remodeled kitchen is a showpiece in custom copper, and warm Brazilian cherry hardwood runs throughout the main level. The primary suite is a true retreat, its modern Euro-style bath appointed with beautiful accents, an oversized glass shower, double vanities, and a wonderful soaking tub that looks out onto nature. Enjoy the built-in infrared sauna, plus several other beautifully finished baths. The walk-out lower level is a fully remodeled, permitted ADU of roughly 1,260 square feet, with its own kitchen, bedroom, bath, living area, a separate radiant heat system, and a private French-door entrance to a garden patio. Rented in the past, it is an ideal setup for guests, extended family, or income, especially timely with the Sundance Film Festival arriving in Boulder in 2027. A detached garage includes a finished office with its own entrance and a half-bath. The upgrades run deep, including a new roof, full exterior stucco, fire-rated Brazilian hardwood decks with glass railings, a pergola over the main deck, two new driveways, and a beautifully redesigned landscape. All just minutes from Wonderland Lake, the private swim and tennis club, trails, Lucky's Market, and Foothill, Centennial, and Boulder High schools.

    Zillow last checked:

    Listing updated:

    Listed by:

    Joel Ripmaster 303-771-3850,

    Madison & Company Properties - Boulder

    Bought with:

    Jennifer Eiss, 40001387

    Compass - Boulder

    Source: IRES as distributed by MLS GRID,MLS#: 1049021MLS Logo

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 4
    • Bathrooms: 5
    • Full bathrooms: 3
    • 3/4 bathrooms: 1
    • 1/2 bathrooms: 1
    • Main level bathrooms: 3
    Rooms
    • Room types: Loft
    Primary bedroom
    • Description: Carpet
    • Features: 5 Piece Primary Bath
    • Level: Main
    • Area: 260 Square Feet
    • Dimensions: 13 x 20
    Bedroom 2
    • Description: Carpet
    • Level: Main
    • Area: 156 Square Feet
    • Dimensions: 12 x 13
    Bedroom 3
    • Description: Carpet
    • Level: Main
    • Area: 238 Square Feet
    • Dimensions: 14 x 17
    Bedroom 4
    • Description: Carpet
    • Level: Lower
    • Area: 198 Square Feet
    • Dimensions: 11 x 18
    Dining room
    • Description: Hardwood
    • Level: Main
    • Area: 117 Square Feet
    • Dimensions: 9 x 13
    Kitchen
    • Description: Hardwood
    • Level: Main
    • Area: 252 Square Feet
    • Dimensions: 12 x 21
    Laundry
    • Description: Vinyl
    • Level: Upper
    • Area: 78 Square Feet
    • Dimensions: 6 x 13
    Living room
    • Description: Hardwood
    • Level: Main
    • Area: 494 Square Feet
    • Dimensions: 19 x 26
    Recreation room
    • Description: Carpet
    • Level: Lower
    • Area: 400 Square Feet
    • Dimensions: 20 x 20
    Study
    • Description: Carpet
    • Level: Upper
    • Area: 160 Square Feet
    • Dimensions: 10 x 16
    Heating
    • Forced Air, Baseboard, 2 or more Heat Sources
    Cooling
    • Central Air, Ceiling Fan(s)
    Appliances
    • Included: Dishwasher, Refrigerator, Washer, Dryer
    Features
    • Eat-in Kitchen, Cathedral Ceiling(s), Open Floorplan, Natural Woodwork, Wet Bar
    • Flooring: Wood
    • Windows: Window Coverings
    • Basement: None
    • Has fireplace: Yes
    • Fireplace features: Free Standing, Living Room
    Interior area
    • Total structure area: 2,833
    • Total interior livable area: 4,093 sqft
    • Finished area above ground: 2,833

    Property

    Parking
    • Total spaces: 2
    • Parking features: Detached, Oversized
    • Garage spaces: 2
    • Details: Detached
    Accessibility
    • Accessibility features: Main Floor Bath, Accessible Bedroom
    Features
    • Levels: Tri-Level
    • Patio & porch: Patio, Deck
    • Exterior features: Sprinkler System, Balcony, Tennis Court(s)
    • Has private pool: Yes
    • Pool features: Private
    • Spa features: Heated
    • Fencing: Wood
    • Has view: Yes
    • View description: Hills, Plains View
    Lot
    • Size: 0.3 Acres
    • Features: Cul-De-Sac, Corner Lot, Wooded, Evergreen Trees, Deciduous Trees, Native Plants, Abuts Public Open Space, Meadow, Paved, Curbs, Gutters, Sidewalks, Street Light, Fire Hydrant within 500 Feet
    Details
    • Parcel number: R0095451
    • Zoning: Res
    • Special conditions: Private Owner

    Construction

    Type & style
    • Home type: SingleFamily
    • Architectural style: Contemporary
    • Property subtype: Mixed Use
    Materials
    • Stucco
    • Foundation: Slab
    • Roof: Other
    Condition
    • New construction: No
    • Year built: 1984

    Utilities & green energy

    • Electric: Xcel
    • Gas: Xcel
    • Sewer: Public Sewer
    • Utilities for property: Natural Gas Available, Electricity Available, Cable Available, High Speed Avail
    Green energy
    • Energy efficient items: Sun Space, Southern Exposure, Windows, Doors, Thermostat

    Community & HOA

    Community
    • Features: Clubhouse, Tennis Court(s), Pool, Playground
    • Security: Fire Alarm
    • Subdivision: Wonderland Hill 7 & 8
    HOA
    • Has HOA: Yes
    • Services included: Common Amenities, Management
    • HOA fee: $725 annually
    • HOA name: Wonderland Hill Pool & Tennis
    Location
    • Region: Boulder

    Financial & listing details

    • Price per square foot: $672/sqft
    • Tax assessed value: $2,393,300
    • Annual tax amount: $12,399
    • Date on market: 1/6/2026
    • Listing terms: Cash,Conventional
    • Electric utility on property: Yes
    • Road surface type: Concrete

    Price history

    DateEventPrice
    10/6/2026Sold$2,750,000-4.3%$672/sqft
    Source: IRES as distributed by MLS GRID #1049021 Report a problem
    9/4/2026Pending sale$2,875,000$702/sqft
    Source: REcolorado as distributed by MLS GRID #IR1049021 Report a problem
    7/20/2026Listed for sale$2,875,000-4%$702/sqft
    Source: IRES as distributed by MLS GRID #1049021 Report a problem
    1/6/2026Listed for sale$2,995,000$732/sqft
    Source: IRES as distributed by MLS GRID #1049021 Report a problem
    12/31/2025Listing removed$2,995,000$732/sqft
    Source: IRES as distributed by MLS GRID #1033748 Report a problem
    6/10/2025Price change$2,995,000-4.9%$732/sqft
    Source: IRES as distributed by MLS GRID #1033748 Report a problem
    5/12/2025Listed for sale$3,150,000+284.1%$770/sqft
    Source: IRES as distributed by MLS GRID #1033748 Report a problem
    7/11/2021Listing removed--
    Source: Zillow Rental Manager Report a problem
    6/9/2021Listed for rent$2,000
    Source: Zillow Rental Manager Report a problem
    9/21/2009Sold$820,000-14.6%$200/sqft
    Source: Public Record Report a problem
    5/6/2009Listing removed$959,900$235/sqft
    Source: Postlets #588518 Report a problem
    3/15/2009Price change$959,900-3.9%$235/sqft
    Source: Postlets #588518 Report a problem
    1/24/2009Price change$999,000+3.5%$244/sqft
    Source: Postlets #588518 Report a problem
    12/4/2008Price change$965,000-1%$236/sqft
    Source: Postlets #588518 Report a problem
    11/29/2008Listed for sale$975,000$238/sqft
    Source: Postlets #588518 Report a problem

    Public tax history

    YearProperty taxesTax assessment
    2025$12,399 +1.8%$149,581 -1.2%
    2024$12,184 +9.9%$151,467 -11.8%
    2023$11,082 +4.9%$171,655 +35.9%
    2022$10,568 +16.8%$126,288 -2.8%
    2021$9,048 $129,923 +16.9%
    2020$9,048 +6.5%$111,097
    2019$8,498 $111,097 +13.3%
    2018$8,498 $98,014 -9.5%
    2017$8,498 +3.9%$108,360 +21.5%
    2016$8,179 +11.8%$89,215 +19.2%
    2015$7,313 +16.3%$74,816
    2014$6,291 -4.3%$74,816
    2013$6,575 +0.9%$74,816 -4.7%
    2012$6,517 +2.8%$78,486
    2011$6,337 +7.1%--
    2010$5,918 +12.9%$78,410 -6.9%
    2009$5,240 +3.5%$84,220 +2.8%
    2008$5,061 -0.6%$81,890
    2007$5,093 +3.9%$81,890 +2.7%
    2006$4,904 +13.9%$79,700
    2005$4,305 +0.7%$79,700 +13.1%
    2004$4,274 -8.8%$70,450 -4.4%
    2003$4,686 +10.3%$73,660 +9.7%
    2002$4,247 $67,140 -90.9%
    2001-- $733,800
    Find assessor info on the county website

    Neighborhood: Wonderland Hills

    Nearby schools

    GreatSchools rating
    Schools provided by the listing agent
    • Elementary: Foothill
    • Middle: Centennial
    • High: Boulder

    Source: IRES 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
    $2,653,100
    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
    $2,653,100