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3633 21st St, Boulder, CO 80304

$8,950,000
  • 7

    bed

  • 5

    bath

  • 6,988

    Sqft ($1,281/Sqft)

House for sale 24 days

About 3633 21st St

Property type House
Neighborhood
Year built 2024
HOA fee $0/month
Lot size 0.81 Acre
Parking 3 garage spaces
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!
Listed by
Listing Agent - Marybeth Emerson
Listing Agent Contact: 7203941997
Listing Office - The Agency - Boulder
Source: IRESMLS mls logo
MLS#1070740 • last updated 3 weeks ago
Movoto checked IRESMLS for data 17 minutes ago
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Overview
Cooling/AC Central Air, Ceiling Fan(s)
Heating Hot Water, Zoned, Radiant
Levels/Style Tri-Level, Contemporary
Virtual Tour External Link
MLS # 1070740
Type Residential
Status Active
SubType Single Family Residence
Living Area 6988
Lot Size (Acres) 0.81
Annual Tax 29641
New Construction (Y/N) 1
Interior
# Three-Quarter Baths 1
Total # of Bathrooms 5
# Full Baths 3
# Half Baths 1
Total # of Bedrooms 7
Basement Full, Daylight
Flooring Wood
Fireplace Desc Gas
Accessibility Features Level Lot, Level Drive, Low Carpet
Window Features Skylight(s)
Interior Features Eat-in Kitchen, Separate Dining Room, Cathedral Ceiling(s), Open Floorplan, Pantry, Wood Windows, Walk-In Closet(s), Skylights, Kitchen Island
Exterior
Roof Composition
Construction Frame
Exterior Features Sprinkler System, Oversized Garage
Patio & Porch Patio, Deck
Lot Features Wooded, Evergreen Trees, Deciduous Trees, Level, House Faces South, Paved
Fencing Partial, Security
Amenities / Utilities
Utilities Natural Gas Available, Electricity Available, Cable Available, Satellite Avail, High Speed Avail
Sewer/ Septic Public Sewer
Electricity XCEL
Water Source Public
Appliances Gas Range, Dishwasher, Refrigerator, Washer, Dryer, Microwave, Disposal, Fire Alarm
Location
View Hills
County Boulder
Subdivision 21st/Linden Sub
Middle School Centennial
High School District Boulder Valley Dist RE2
APN R0004105
Lot/ Land Details
Possible Use Single Family
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Source: GreatSchools.org © 2026. All rights reserved.

Around Carolyn Heights

Explore everything this neighborhood has to offer. Learn more about Carolyn Heights.
40/100
Walk
69/100
Family
65/100
Dining
87/100
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  • Real Estate
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  • Boulder County
  • Boulder
  • 80304
  • Carolyn Heights
  • 3633 21st St

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