3621 21st Street, Boulder, CO 80304 (MLS # IR1051395)

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PRICE $13,000,000 dsIDX morgage calculator
BEDS 4
BATHS 5
HOME SIZE 6,300 sqft
LOT SIZE 28,750 sqft

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.

DAYS ON MARKET 8 LAST UPDATED 2/11/2026
TRACT Carolyn Heights YEAR BUILT 2021
GARAGE SPACES 3.0 COUNTY Boulder
STATUS Active PROPERTY TYPE(S) Single Family

SCHOOLS
Elementary School Crest View
Jr. High School Centennial
High School Boulder


ADDITIONAL DETAILS
AIR Central Air
AIR CONDITIONING Yes
APPLIANCES Bar Fridge, Dishwasher, Disposal, Double Oven, Dryer, Freezer, Microwave, Oven, Refrigerator, Trash Compactor, Washer
BASEMENT Full, Yes
CONSTRUCTION Block, Brick, Frame, Stone
EXTERIOR Dog Run, Gas Grill
FIREPLACE Yes
GARAGE Yes
HEAT Radiant
INTERIOR Eat-in Kitchen, Kitchen Island, Open Floorplan, Pantry, Vaulted Ceiling(s), Walk-In Closet(s), Wet Bar
LOT 0.66 acre(s)
LOT DESCRIPTION Level, Sprinklers In Front, Wooded
PARKING Heated Garage, Oversized, Attached
POOL Yes
POOL DESCRIPTION Private
SEWER Public Sewer
STORIES 2
STYLE Contemporary
SUBDIVISION Carolyn Heights
TAXES 55752
UTILITIES Cable Available, Electricity Available, Natural Gas Available
WATER Public
MORTGAGE CALCULATOR
   

TOTAL MONTHLY PAYMENT

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Listing provided by Patricia Dessel, Compass - Boulder
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