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For sale
  • $4,500,000

    630 Northstar Ct, Boulder, CO 80304

    5beds
    3,654sqft
    : 
    Residential-Detached, Residential
    Built in 1976
    9,074 Square Feet Lot
    $-- Zestimate®
    $1,232/sqft
    $398/mo HOA

    What's special

    Welcome to 630 Northstar Court, where architecture becomes sculpture and living becomes an artistic experience. Designed by Charles Haertling, Colorado's most celebrated modernist architect, this is not just a home - it's a rare, livable work of art. Virtually no other Haertling home has undergone a renovation of this caliber, with such a deep reverence for the original design while also maintaining a remarkably livable, open and functional floor plan that is also artful yet practical, supporting comfort, flow, and purpose. Originally built in 1976, this sculptural residence, shaped like twin cones, resembling a cassette tape in plan and a double teepee in elevation, is one of Haertling's most iconic creations. Each tower is anchored by a sculptural, wood-burning fireplace, defining elements that ground the soaring geometry with drama and purpose. Set against the backdrop of the foothills, the home offers remarkable Flatiron views, sitting like a sculpture in the landscape and blending geometry, nature, and light. Framed by walls of glass and grounded in organic materials, the home flows into a serene meditation room, a tranquil water feature, and a secluded private hot tub. Outdoor living is elevated with over 1,600 sq ft of decks and patios. Perhaps one of Boulder's best-kept secret enclaves with its coveted location directly across from the private community pool, pickleball/tennis and volleyball courts, and a mere 300-foot walk to access trails with the most jaw-dropping panoramic views of the Flatirons and Foothills, and only 1 mile to Lucky's Supermarket, beloved restaurants, and cafes, easily accessible from scenic bike paths. With downtown Pearl St Mall only 2.5 miles, you will enjoy an unmatched blend of peace, artistry, and convenience. Sustainable upgrades include a 4.5kW solar PV system, EV charger, in-floor radiant heat & 2 mini-splits for cooling & additional heating.
    97 days
    on Zillow
    |
    786
    |
    46
    |

    Zillow last checked: 7 hours ago

    Listing updated: August 08, 2025 at 12:24pm

    Listed by:

    Deanna Franco 720-422-5131,

    milehimodern - Boulder

    Source: IRES,MLS#: 1033798MLS Logo
    Travel times

    Tour with a buyer's agent

    We'll find a local expert to take you on a private tour of 630 Northstar Ct.

    Next available tour time:Today at 11am

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 5
    • Bathrooms: 3
    • Full bathrooms: 2
    • 1/2 bathrooms: 1
    Primary bedroom
    • Area: 208
    • Dimensions: 16 x 13
    Bedroom 2
    • Area: 221
    • Dimensions: 17 x 13
    Bedroom 3
    • Area: 136
    • Dimensions: 17 x 8
    Bedroom 4
    • Area: 192
    • Dimensions: 16 x 12
    Bedroom 5
    • Area: 180
    • Dimensions: 15 x 12
    Dining room
    • Area: 224
    • Dimensions: 16 x 14
    Family room
    • Area: 260
    • Dimensions: 20 x 13
    Kitchen
    • Area: 264
    • Dimensions: 24 x 11
    Living room
    • Area: 570
    • Dimensions: 30 x 19
    Heating
    • Heat Pump, Radiant
    Cooling
    • Central Air
    Appliances
    • Included: Electric Range/Oven, Down Draft, Dishwasher, Refrigerator, Washer, Dryer, Microwave, Disposal
    • Laundry: Sink, Washer/Dryer Hookups, Lower Level
    Features
    • Study Area, Separate Dining Room, Cathedral/Vaulted Ceilings, Open Floorplan, Walk-In Closet(s), Loft, Two Primary Suites, High Ceilings, Open Floor Plan, Walk-in Closet, 9ft+ Ceilings
    • Flooring: Wood, Wood Floors, Tile, Cork
    • Windows: Window Coverings, Skylight(s), Double Pane Windows, Skylights
    • Basement: Full,Partially Finished,Walk-Out Access
    • Has fireplace: Yes
    • Fireplace features: 2+ Fireplaces
    Interior area
    • Total structure area: 3,654
    • Total interior livable area: 3,654 sqft
    • Finished area above ground: 1,809
    • Finished area below ground: 1,845

    Property

    Parking
    • Total spaces: 2
    • Parking features: Garage, Carport
    • Garage spaces: 2
    • Has carport: Yes
    • Details: Garage Type: Carport
    Features
    • Levels: Three Or More
    • Stories: 3
    • Patio & porch: Patio, Deck
    • Exterior features: Balcony, Hot Tub Included
    • Spa features: Heated
    • Has view: Yes
    • View description: Hills
    Lot
    • Size: 9,074 Square Feet
    • Features: Sidewalks, Lawn Sprinkler System
    Details
    • Parcel number: R0000067
    • Zoning: RL-2
    • Special conditions: Private Owner

    Construction

    Type & style
    • Home type: SingleFamily
    • Architectural style: Contemporary/Modern
    • Property subtype: Residential-Detached, Residential
    Materials
    • Wood/Frame, Block, Metal Siding, Stucco
    • Roof: Metal
    Condition
    • Not New, Previously Owned
    • New construction: No
    • Year built: 1976
    Details
    • Builder name: Silver Lining Builders

    Utilities & green energy

    • Electric: Electric, Xcel
    • Gas: Natural Gas, Xcel
    • Sewer: City Sewer
    • Water: City Water, City
    • Utilities for property: Natural Gas Available, Electricity Available, Trash: Western Disposal
    Green energy
    • Energy efficient items: Southern Exposure
    • Energy generation: Solar PV Owned

    Community & HOA

    Community
    • Features: Clubhouse, Tennis Court(s), Pool, Park
    • Subdivision: Linden Park 1
    HOA
    • Has HOA: Yes
    • Services included: Common Amenities, Trash, Snow Removal, Management, Utilities
    • HOA fee: $4,770 annually
    Location
    • Region: Boulder

    Financial & listing details

    • Price per square foot: $1,232/sqft
    • Tax assessed value: $2,584,600
    • Annual tax amount: $14,895
    • Date on market: 5/13/2025
    • Listing terms: Cash,Conventional
    • Exclusions: Seller's Personal Property + Any Staging Items
    • Electric utility on property: Yes
    • Road surface type: Paved, Asphalt
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