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3633 21st St, 
Boulder, CO 80304

$11,500,000


7

Beds


5

Baths


6,988

Sq Ft


Single Family

Active

Listed by

Marybeth Emerson

The Agency - Boulder

720-577-5503

Last updated:

July 17, 2025, 06:08 PM

MLS#

1031592

Source:

IRES

About This Home

3633 21st St

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 moments 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!

Home Facts

Single Family

5 Baths

7 Bedrooms

Built in 2024

Price Summary

11,500,000

$1,645 per Sq. Ft.

MLS #:

1031592

Last Updated:

July 17, 2025, 06:08 PM

Added:

3 month(s) ago


Rooms & Interior

Bedrooms

Total Bedrooms:

7

Bathrooms

Total Bathrooms:

5

Full Bathrooms:

3

Interior

Living Area:

6,988 Sq. Ft.


Structure

Structure

Architectural Style:

Contemporary/Modern, Residential-Detached, Tri-Level

Building Area:

4,798 Sq. Ft.

Year Built:

2024


Lot

Lot Size (Sq. Ft):

35,283


Finances & Disclosures

Finances

Price:

$11,500,000

Price per Sq. Ft:

$1,645 per Sq. Ft.

Source:IRES
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