Meticulously crafted, masterfully built, and expertly curated this home is a true masterpiece of modern luxury and sophistication. | Image 1

3621 21 St St, Boulder, CO

House

For Sale

Listed price in listed location currency (USD).

$12,000,000

450

MLS® 1051395

Key Facts
Description
Rooms
Map

Key Facts

Type Single Family Residence

Levels Residential

Size 6300 sqft

Garage Yes

Taxes $55,752

Days Active 29

Lot Size 0.66 acres

Approx. Age 2021

Avg. Price Per Sqft $1,904

MLS® Number 1051395

Property Address: 3621 21st St, Boulder, CO, 80304-1607

Average square foot calculated using Size range provided by listing agent.

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.

MLS® Number1051395

Laundry LevelSink

Central VacNo

FireplaceNo

Acreage0.66

Exterior

GarageYes

Approx. Age2021

BasementFull

DrivewayGarage Door Opener, Attached

Garage Spaces3

Heat

A/C

Heating Fuel

Extras

Price History

-End Date

Not Sold YetSold Price

For Sale

Feb 11, 2026List Date

$12,000,000List Price

Home Appraisal

This property is estimated to sell between: $2,767,000 and $16,617,000.

Similar properties in this area sold on average for: $2,767,333

Expected to sell in 79 days. Similar properties sold in 108 days. This home has been on eXp Realty for 29 days.

The estimated sale price does not take into account many variables such as recent renovations, type of appliances, school district etc. To get a more accurate estimate please contact agent.

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Starting Address

Destination Address

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