$11,500,000
7 Bed
5 Bath
6,988
0.81 Acre Lot

3633 21st Street, Boulder, Colorado 80304

  • Residential Property Type
  • 6,988 Square Footage
  • Oversized Cars Garage
  • 2024 Year Built
Property 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 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! Original home built in 1987. Home had a studs up remodel that was completed in early 2024.

Basic Details
Residential
For Sale
IR1031592
$11,500,000
7
5
1
6,988
2024
0.81 Acre
Active
Mountain(s)
3
Single Family Residence
: Composition
Listing courtesy of
The Agency - Boulder
Features
: Radiant, Hot Water
: Ceiling Fan(s), Air Conditioning-Room
: Full, Daylight
: Partial, Fenced
: Gas
: Deck, Patio
: Oversized
: Tile, Wood
: Open Floorplan, Walk-In Closet(s), Eat-in Kitchen, Five Piece Bath, Kitchen Island, Pantry, Vaulted Ceiling(s)
: Public Sewer
: Electricity Available, Natural Gas Available
: Contemporary
Appliances
: Dishwasher, Dryer, Oven, Refrigerator, Washer
Address Map
21st
3633
Street
W106° 43' 42.1''
N40° 2' 30.4''
South
RES
Neighborhood
Columbine
Boulder Valley RE 2
Boulder
Boulder Valley RE 2
Centennial
Additional Information
1
6988
: Frame
3
: Tri-Level
: Sprinklers In Front, Level
Residential
https://vimeo.com/1076220353
: Public
Financial
29936
Listing Information
IRP28512
IR07534
Cash,Conventional
Active
2025-04-18T21:11:21Z
REcolorado
2025-04-18T06:00:00Z
Marybeth Emerson
Agent info
Harder Real Estate & Development
130 West 2nd St, Suite 1