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.
For sale
$4,500,000
630 Northstar Ct, Boulder, CO 80304
5beds
3,654sqft
Est.:
Residential-Detached, Residential
Built in 1976
9,074 Square Feet Lot
$-- Zestimate®
$1,232/sqft
$398/mo HOA
What's special
- 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#: 1033798

Travel times
Tour with a buyer's agent
Tour with a buyer's agent
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
Video & virtual tour
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
- Loading
- Loading