About 3633 21st Street
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.
Features of 3633 21st Street
| MLS® # | IR1031592 |
|---|---|
| Price | $11,500,000 |
| Bedrooms | 7 |
| Bathrooms | 5.00 |
| Full Baths | 3 |
| Half Baths | 1 |
| Square Footage | 6,988 |
| Acres | 0.81 |
| Year Built | 2024 |
| Type | Residential |
| Sub-Type | Single Family Residence |
| Style | Contemporary |
| Status | Active |
Community Information
| Address | 3633 21st Street |
|---|---|
| Subdivision | 21st/Linden Sub |
| City | Boulder |
| County | Boulder |
| State | CO |
| Zip Code | 80304 |
Amenities
| Utilities | Electricity Available, Natural Gas Available |
|---|---|
| Parking Spaces | 3 |
| Parking | Oversized |
| # of Garages | 3 |
| View | Mountain(s) |
| Is Waterfront | No |
| Has Pool | No |
Interior
| Interior Features | Eat-in Kitchen, Five Piece Bath, Kitchen Island, Open Floorplan, Pantry, Vaulted Ceiling(s), Walk-In Closet(s) |
|---|---|
| Appliances | Dishwasher, Dryer, Oven, Refrigerator, Washer |
| Heating | Hot Water, Radiant |
| Cooling | Air Conditioning-Room, Ceiling Fan(s) |
| Fireplace | Yes |
| Fireplaces | Gas |
| Stories | Tri-Level |
Exterior
| Lot Description | Level, Sprinklers In Front |
|---|---|
| Roof | Composition |
School Information
| District | Boulder Valley RE 2 |
|---|---|
| Elementary | Columbine |
| Middle | Centennial |
| High | Boulder |
Additional Information
| Date Listed | April 18th, 2025 |
|---|---|
| Zoning | RES |
| Foreclosure | No |
| Short Sale | No |
| RE / Bank Owned | No |
Listing Details
| Office | The Agency - Boulder |
|---|