3633 21st Street Boulder, CO 80304
Listing Courtesy of: MLS LogoThe Agency Boulder

  3633 21st Street Boulder, CO 80304

Active
$10,000,000 (USD)
7
BED
5
BATH
6,988
SQFT

Description

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.

MLS #:
IR1051043
Taxes
$29,641(2025)
Lot Size
0.81 acres
Type
Single-Family Home
Year Built
2024
Style
Contemporary
Views
Mountain(s)
School District
Boulder Valley Re 2
County
Boulder County
Community
21st/Linden Sub

Listed By

Marybeth Emerson, The Agency Boulder
Source
RECOLORADO
Last checked Apr 3 2026 at 10:20 PM MDT
Bathroom Details
  • Full Bathrooms: 3
  • 3/4 Bathroom: 1
  • Half Bathroom: 1
Interior Features
  • Dishwasher
  • Disposal
  • Dryer
  • Washer
  • Kitchen Island
  • Five Piece Bath
  • Pantry
  • Open Floorplan
  • Vaulted Ceiling(s)
  • Walk-In Closet(s)
  • Eat-In Kitchen
  • Oven
  • Refrigerator
  • Security Features: Smoke Detector(s)
  • Microwave
  • Window Features: Skylight(s)
  • Security Features: Fire Sprinkler System
Subdivision
  • 21St/Linden Sub
Lot Information
  • Level
  • Sprinklers In Front
Property Features
  • Wooded
  • Fireplace: Gas
Heating and Cooling
  • Radiant
  • Hot Water
  • Air Conditioning-Room
  • Ceiling Fan(s)
Basement Information
  • Full
  • Daylight
Flooring
  • Wood
  • Tile
Exterior Features
  • Frame
  • Roof: Composition
Utility Information
  • Utilities: Electricity Available, Natural Gas Available
School Information
  • Elementary School: Columbine
  • Middle School: Centennial
  • High School: Boulder
Parking
  • Oversized
Stories
  • 3
Living Area
  • 6,988 sqft
Location
   
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