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Homes for sale in Boulder, CO | 3633 21St St, Boulder, CO 80304 | MLS# IR1051043
Homes for sale in Boulder, CO | 3633 21St St, Boulder, CO 80304 | MLS# IR1051043
Homes for sale in Boulder, CO | 3633 21St St, Boulder, CO 80304 | MLS# IR1051043
Homes for sale in Boulder, CO | 3633 21St St, Boulder, CO 80304 | MLS# IR1051043
Homes for sale in Boulder, CO | 3633 21St St, Boulder, CO 80304 | MLS# IR1051043
35+
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$10,000,000

  • Beds Icon7 Beds
  • Beds Icon
    5 Baths

    3 full baths + 1 half bath

  • Beds Icon6,988sqft

3633 21St St, Boulder, CO 80304

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  • Single Family Residence

  • Built in 2024

  • $-- HOA

  • 35,311 sqft lot

  • $1,431/sq.ft

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 ...

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  • Houzeo last checked: 41 Minutes ago
  • Listing updated: June 2, 2026 at 4:11 pm
  • Listing Provided by: Marybeth Emerson (720) 394-1997 | The Agency - Boulder (720) 577-5503
  • Source: DENVER (RE COLORADO) MLS-CO | MLS#: IR1051043 DENVER (RE COLORADO) MLS-CO

Property Details

  • Status

    Active

  • Type

    Single Family Residence

  • No. of Stories

    -

  • County

    Boulder County

  • City

    Boulder

  • Neighborhood

    --

  • Year Built

    2024

  • HOA Fees

    -

  • Finished Area

    6,988 sqft

  • Lot Size

    35,311 sqft lot

  • Basement Area

    - sqft

  • MLS Name

    DENVER (RE COLORADO) MLS

  • MLS Number

    IR1051043

  • MLS Status

    Active

  • Days on Market

    116

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