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$8,950,000

3633 21st St, Boulder, CO 80304  (Sold on )

  • Price Reduced
  • Open House
  • New Listing
  • Coming Soon
  • 7 BedBeds
  • 5 BathBaths
  • 6,988 SqftSqft
  • TypeSingle Family
  • Active
  • MLS# 1070740
0 More Schedule

Property Description

Exquisite secluded sanctuary in the heart of Carolyn Heights. Tucked into one of Boulder's most prestigious enclaves, this gated estate offers a rare fusion of luxury, privacy, and relaxed sophistication. Set on a serene, tree-lined .81-acre level lot, this 7-bedroom, 5-bathroom oasis is where inspired design meets effortless living. Awaken each morning as you do in your favorite boutique hotel; surrounded by nature and peace. Those same views tease your senses from the expansive patios with fully retractable doors that blur the lines from inside to outside. Bathed in natural light from soaring windows and skylights, every detail has been thoughtfully curated. Custom walnut doors and paneling welcome you into the home and invite you to explore. The chef's kitchen is a showstopper-featuring custom cabinetry, an oversized marble island, and top-of-the-line Thermador appliances. The open-concept layout flows seamlessly into a lush backyard oasis, perfect for gatherings or quiet moments of retreat by the fire pit. The primary suite is a haven unto itself with vaulted ceilings, a spa-inspired bath, spacious walk-in closet, and private deck access. With multiple flexible living spaces-including a dedicated home office and media room, this home is ready to adapt to your every need. Located minutes from North Boulder's best hiking trails, cycling routes, farmers markets, and local eateries-yet nestled in the peaceful privacy of a mature, sought-after neighborhood. Elevated living starts here. LIVE BOULDER, LOVE BOULDER!

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Property Details

General

  • Subdivision: 21st/Linden Sub
  • County: Boulder
  • List Date: 10/16/2026
  • Expected Active Date: 10/16/2026
  • DOM: 7
  • Style: Contemporary
  • Lot SqFt: 35311
  • Approx Acres: 1
  • Beds: 7
  • Baths: 5.00
  • Full Baths: 3
  • ¾ Baths: 1
  • Half Baths: 1
  • Basement/Foundation: Full, Daylight
  • Year Built: 2024
  • New construction: Yes
  • Sq Ft (total): 6988
  • Garage/Parking Spaces: 3
  • Garage Description: Attached
  • MLS#: 1070740

Interior Features

  • Heating: Hot Water, Zoned, Radiant
  • Cooling: Central Air, Ceiling Fan(s)
  • Fireplace: Gas
  • Disability Accessibility: Level Lot, Level Drive, Low Carpet

Exterior Features

  • Construction: Frame
  • Roof: Composition
  • Type: Single Family Residence
  • Outdoor Features: Sprinkler System, Oversized Garage
  • Fences: Partial, Security
  • Waterfront: NO
  • Views: Hills

Schools

  • School District: Boulder Valley Dist RE2
  • Elementry: Columbine
  • Middle/Jr: Centennial
  • High School: Boulder

Financial Considerations

  • Tax Year: 2025
  • Tax Amount: $29641

Utilities

  • Utilities: Natural Gas Available, Electricity Available, Cable Available, Satellite Avail, High Speed Avail
  • Water/Sewer: Public Sewer
  • Water: Public
 

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