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Boulder, CO 80304 3621 21st St

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  • MLS# 1051395
  • 02/11/2026
  • Request Tour
  • Request Info
  • Beds • 4
  • Full/Half Baths • 4 / 1
  • Garage • 3

Home Details

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.
Presented By: ;

Interior Features for 3621 21st St

Bedrooms

Total Bedrooms4

Bathrooms

3/4 Baths3
Half Baths1
Total Baths5

Other Interior Features

LivingAreaSourceOther
Above Grade Finished Area4544
BasementFull
Below Grade Finished Area1756
Fireplace FeaturesGas, Living Room
FlooringWood
Interior AmenitiesEat-in Kitchen, Cathedral Ceiling(s), Open Floorplan, Pantry, Walk-In Closet(s), Wet Bar, Washer/Dryer Hookup, Kitchen Island, Steam Shower, High Ceilings, Split Bedroom Plan
Laundry FeaturesSink
Window FeaturesWindow Coverings

Other Rooms

Room TypeMedia Room

General for 3621 21st St

AccessibilityLevel Lot, Level Drive, Exterior Door Openings 36 plus, Main Floor Bath, Main Level Bedroom, Main Level Laundry
AppliancesGas Range, Double Oven, Dishwasher, Refrigerator, Bar Fridge, Washer, Dryer, Microwave, Trash Compactor, Freezer, Gas Bar-B-Q, Disposal, Fire Alarm
Architectural StyleContemporary
AttributionContact3034756097
CityBoulder
Construction MaterialsFrame, Brick, Block, Stone
CoolingCentral Air
CountyBoulder
DisclosuresSeller's Property Disclosure
Elementary SchoolCrest View
Energy EfficientSouthern Exposure, Windows, Photovoltaic Owned
ExclusionsPersonal Property and Artwork
Expected Active Date 2026-02-11
Full Baths1
Garage Spaces3
HOANo
HeatingRadiant
High SchoolBoulder
High School DistrictBoulder Valley Dist RE2
LevelsTwo
Living Area6300
MLS AreaBoulder
Middle/Junior High SchoolCentennial
New ConstructionNo
Parcel NumberR0004965
Patio/Porch FeaturesPatio
Pool FeaturesPrivate
Possible UseSingle Family
Property Attached Y/NNo
Property SubtypeSingle Family Residence
Property TypeResidential
RoofComposition
Security FeaturesFire Sprinkler System, Security System
SewerPublic Sewer
Standard StatusActive
StatusActive
Subdivision NameCarolyn Heights
Tax Annual Amount55752
Tax Year2024
UtilitiesNatural Gas Available, Electricity Available, Cable Available, High Speed Avail
Virtual TourClick here
Year Built2021
ZoningRES

Exterior for 3621 21st St

Exterior AmenitiesSprinkler System, Hot Tub, Heated Garage, Oversized Garage
FencingFenced, Dog Run/Kennel
Irrigation Water Rights Y/NNo
Lot FeaturesWooded, Evergreen Trees, Deciduous Trees, Native Grass, Level, House Faces East, City Limits, Paved
Lot Size Acres0.66
Lot Size Area28700
Parking FeaturesGarage Door Opener, Attached
Road Frontage TypeCity Street
Road Surface TypeAsphalt
Water SourceCity
Waterfront Y/NNo

Additional Details

Price History

Schools

High School Boulder High School
Middle School Centennial Middle School
Elementary School Crest View Elementary School

Nathan Washam

Broker/Owner
Price $12,000,000
MLS#1051395
List Date 02/11/2026
Property Type Single Family
Phone 970.988.8295
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