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Max Shilof
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    REcolorado
    Based on information submitted to the MLS GRID as of 2026-02-15 08:45:33 UTC. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.
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    Information and Real Estate Services, LLC

    Information source: Information and Real Estate Services, LLC. Provided for limited non-commercial use only under IRES Rules. © Copyright IRES. Information deemed reliable but not guaranteed by the MLS. The information being provided is for the consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.

    $13,000,000
    For Sale

    3621 21st Street

    Boulder, CO 80304
    7099 sqft | 4 beds | 3.75 baths | 0.66 acres | #IR1051395
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    Listing OfficeCompass - Boulder
    3621 21st Street
    50 photos
    Type:Purchase
    Structure:House
    Zone:Residential

    Description

    Meticulously crafted, masterfully built, and expertly curated with an elevated design, this custom home is a true masterpiece, perfectly situated on a premier lot in the exclusive Carolyn Heights neighborhood, The exquisite design and inspiring architecture of this exceptional residence ensures that every facet embodies luxury, casual elegance, and attention to detail, harmoniously blending wood, glass, stone, and steel to create an ambiance that is both inviting and inspiring. Upon entry, you'll be greeted by soaring ceilings, wide plank white oak flooring, & an open-concept main level bathed in abundant natural light streaming through expansive windows, inviting the outside in. The prodigious living area seamlessly integrates indoor & outdoor spaces, offering a glimpse of the splendid living experience that awaits. The architectural grandeur is showcased w/ a dramatic three-story open-tread wooden staircase, custom steel railings, & illuminated by bespoke lighting. The centerpiece of the home, the gourmet kitchen, boasts an impressive center island, marble & quartz countertops, artisanal tile, custom cabinetry, top-tier chef's appliances, & walk-in pantry. The elegant main floor primary bedroom suite is a tranquil retreat, w/ wall-to-wall windows, a generous walk-in closet w/custom cabinetry. The soothing primary bathroom features premium quality finishes, including designer tile, custom cabinetry, & alluring lighting.The heated pool w/ a tanning shelf, natural stone deck, & automatic pool cover takes center stage in the serene yard. Every aspect of this smart home seamlessly integrates technology, design, & automation to ensure security & convenience, and efficiency. For the discerning owner desiring a residence that embodies casual elegance & architectural interest, w/proximity to vibrant downtown Boulder & nestled in an upscale neighborhood, this property is a rare find that offers an unsurpassed lifestyle.

    • Property Details
        • InteriorEat-in Kitchen, Five Piece Bath, Kitchen Island, Open Floorplan, Pantry, Vaulted Ceiling(s), Walk-In Closet(s), Wet Bar
        • Utility FeaturesCable Available, Electricity Available, Internet Access (Wired), Natural Gas Available
        • Exterior MaterialsDog Run, Gas Grill, Spa/Hot Tub
        • Lot DescriptionLevel, Sprinklers In Front
        • Property SubtypeSingle Family Residence
        • School DistrictBoulder Valley RE 2
        • SubdivisionCarolyn Heights
        • Sewer InformationPublic Sewer
        • Original List Price$13,000,000
        • Elementary SchoolCrest View
        • Middle SchoolCentennial
        • Cost13000000.0
        • MLS #IR1051395
        • MLS #IR1051395
        • Property TypePurchase
        • High SchoolBoulder
        • CountyBoulder
        • Taxes Annual$55,752
        • Square Feet7099.0
        • Parking TypeGarage
        • Utility SourcePublic
        • Structure TypeHouse
        • Bathrooms3.75
        • Acres0.66
        • BasementFull
        • Year Built2021
        • Parking Garage Spaces3.0
        • Bedrooms4
        • Full Baths1
        • Half Baths1
        • 3/4 Baths3
        • Parking Spaces3

    Location

    Legal

    Based on information submitted to the MLS GRID as of 2026-02-12 06:40:17 UTC. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

    Last Updated: Today at 2:50 AM. Source: RECOLORADO

    Provided By
    Listing Agent: Patricia Dessel (#RECIRP29335), Phone: 303-475-6097, Email: tricia.dessel@compass.com
    Listing Office: Compass - Boulder (#RECIRCBR02)

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