3633 21st Street, Boulder, CO 80304

• 7 beds |
• 5 baths |
• 6,988 sqft

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 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! Original home built in 1987. Home had a studs up remodel that was completed in early 2024.

Listing Status:

Active

Data Last Updated:

February 14, 2026 at 4:20PM

Listing Office:

The Agency - Boulder : 7205775503

Listing Agent:

Marybeth Emerson : 720-394-1997

MLS ID:

IR1051043

Interior

• General: Eat-in KitchenFive Piece BathKitchen IslandOpen FloorplanPantryVaulted Ceiling(s)Walk-In Closet(s)
• Appliances: DishwasherDisposalDryerMicrowaveOvenRefrigeratorWasher
• Basement: DaylightFull
• Flooring: TileWood
• A/C: Room Air ConditionerCeil
• Heating: Hot WaterRadiant
• Fireplace: Gas

Exterior

• Style: Contemporary
• Other Structures: DeckPatio
• Parking: OversizedParking spaces: 3

Construction

• Roofing: Composition
• Windows: Skylight(s)
• General: Tri-Level

Location

• Originating MLS: recolorado
• School District: Boulder Valley RE 2
• County: Boulder

Lot

• Zoning: RESLOT 1 21ST/LINDEN SUBR0004105
• View: Mountain(s)
• Fencing: FencedPartial

Utilities

• Utilities: Electricity AvailableNatural Gas Available
• Water: Public
• Sewer: Public Sewer

Financial

• Source: recolorado
• Ownership: Individual
• Exclusions: Sellers personal property and any staging items