3633 21st ST Boulder, CO 80304 New

UPDATED: 02/06/2026 05:11 PM ON MARKET: 4 days on market

$10,000,000

7 Beds5 Baths6,988 SqFt

Key Details

Property Type Single Family Home

Sub Type Single Family Residence

Listing Status Active

Purchase Type For Sale

Square Footage 6,988 sqft

Price per Sqft $1,431

Subdivision 21St/Linden Sub

MLS Listing ID IR1051043

Style Contemporary

Bedrooms 7

Full Baths 3

Half Baths 1

Three Quarter Bath 1

HOA Y/N No

Abv Grd Liv Area 4,798

Year Built 2024

Annual Tax Amount $29,641

Tax Year 2025

Lot Size 0.811 Acres

Acres 0.81

Property Sub-Type Single Family Residence

Source recolorado

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.