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3633 21st Street
3633 21st Street
3633 21st Street
3633 21st Street
3633 21st Street
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For Sale

3633 21st Street

3633 21st Street, Boulder, CO 80304

$10,000,000
Exquisite secluded sanctuary in the heart of Carolyn Heights. Tucked into one of Boulder's most prestigious enclaves, this 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. Stunning views of the Flatirons awaken you each morning from your bed. 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! Original home built in 1987. Home had a studs up remodel that was completed in early 2024.

7
beds

5
baths

6,988 Sq.Ft. LIVING AREA

0.81 Acres lot

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Features & Amenities

Interior

  • total bedrooms7
  • Total bathrooms5
  • full bathrooms3
  • three quarter bathroom1
  • half bathroom1
  • Flooring Tile, Wood
  • Fireplace Gas
  • APPLIANCES Dishwasher, Disposal, Dryer, Microwave, Oven, Refrigerator, Washer
  • other interior Features Eat-in Kitchen, Five Piece Bath, Kitchen Island, Open Floorplan, Pantry, Vaulted Ceiling(s), Walk-In Closet(s)

Area & Lot

  • Status For Sale
  • Living Area6,988 Sq.Ft.
  • Total Area6,988 Sq.Ft.
  • Lot Area0.81 Acres
  • MLS® IDIR1051043
  • TypeResidential
  • YEAR BUILT2024
  • Architecture StylesContemporary
  • View DescriptionMountain(s)
  • Elementary SchoolColumbine
  • Middle SchoolCentennial
  • High SchoolBoulder
  • School DistrictBoulder Valley RE 2

Exterior

  • STORIES3
  • Garage Space3.0
  • water SourcePublic
  • utilitiesElectricity Available, Natural Gas Available
  • roofComposition
  • lot featuresLevel, Sprinklers In Front
  • parkingOversized
  • HEAT TYPEHot Water, Radiant
  • AIR CONDITIONINGAir Conditioning-Room, Ceiling Fan(s)
  • sewerPublic Sewer
  • security FeaturesFire Sprinkler System, Smoke Detector(s)

Financial

  • Sales Price$10,000,000
  • Real Estate Tax $29,641/yr
  • Zoning RES
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Schedule a Showing

We would love to show you our beautiful property. Please select your preferred date and time below. An agent will be in touch shortly to confirm your appointment.

Thank you for your interest in 3633 21st Street, Boulder, CO 80304. We are reviewing your request and will be in touch shortly!

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