Primary on Main
Address
3621 21st St, Boulder, CO
Price
$ 12,000,000
Property Attributes
- MLS#1051395
- TypeSingle Family
- Listing Status Active
- CountyBOULDER
- CityBoulder
- AreaBoulder
- NeighborhoodCarolyn Heights
- Zip80304
- StyleContemporary
- Year Built2021
- Taxes$ 55752
- Price$ 12,000,000
- Bedrooms4
- Full Bathrooms4
- Half Bathrooms1
- Sqr Footage7099
- Lot Size0.66 Acres
Data Source:
Information and Real Estate Services (IRES)
Property 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.
| Elementary School | Middle School | High School |
|---|---|---|
| Crest View Elementary School | Centennial Middle School | Boulder High School |
| Price History | |
|---|---|
| 2/12/2026 | Listed $13,000,000 |
| 2/28/2026 | 8$12,000,000 |
General Features
| Living Area | 6300 |
|---|---|
| Sewer | Public Sewer |
| Heating | Radiant |
| Cooling | Central Air |
| Utilities | Natural Gas Available,Electricity Available,Cable Available,High Speed Avail |
| Roof | Composition |
| Appliances | Gas Range,Double Oven,Dishwasher,Refrigerator,Bar Fridge,Washer,Dryer,Microwave,Trash Compactor,Freezer,Gas Bar-B-Q,Disposal,Fire Alarm |
| Zoning | RES |
| Garage Spaces | 3 |
| Patio/Porch Features | Patio |
| Architectural Style | Contemporary |
| Pool Features | Private |
| Security Features | Fire Sprinkler System,Security System |
| Construction Materials | Frame,Brick,Block,Stone |
| Exclusions | Personal Property and Artwork |
| Year Built | 2021 |
| Electric | Xcel |
| Levels | Two |
| Property Subtype | Single Family Residence |
| Tax Year | 2024 |
| Parcel Number | R0004965 |
| Accessibility | Level Lot,Level Drive,Exterior Door Openings 36 plus,Main Floor Bath,Main Level Bedroom,Main Level Laundry |
| County | Boulder |
| New Construction | No |
| Property Type | Residential |
| HOA | No |
| Energy Efficient | Southern Exposure,Windows,Photovoltaic Owned |
| Subdivision Name | Carolyn Heights |
| Possible Use | Single Family |
| Full Baths | 1 |
| Status | Active |
| High School | Boulder |
| City | Boulder |
| Disclosures | Seller's Property Disclosure |
| High School District | Boulder Valley Dist RE2 |
| MLS Area | Boulder |
| Elementary School | Crest View |
| Property Attached Y/N | No |
| Tax Annual Amount | 55752 |
| Middle/Junior High School | Centennial |
| Virtual Tour | https://youtu.be/Us9ESmi2pfs |
| Standard Status | Active |
| Expected Active Date | 2026-02-11 |
| AttributionContact | 3034756097 |
Interior Features
| Interior Amenities | Eat-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 |
|---|---|
| Basement | Full |
| Flooring | Wood |
| Fireplace Features | Gas,Living Room |
| Window Features | Window Coverings |
| Above Grade Finished Area | 4544 |
| Half Baths | 1 |
| 3/4 Baths | 3 |
| Laundry Features | Sink |
| Total Bedrooms | 4 |
| Room Type | Media Room |
| LivingAreaSource | Other |
| Total Baths | 5 |
| Power Production Type | 1 |
Exterior Features
| Exterior Amenities | Sprinkler System,Hot Tub,Heated Garage,Oversized Garage |
|---|---|
| Fencing | Fenced,Dog Run/Kennel |
| Parking Features | Garage Door Opener,Attached |
| Lot Features | Wooded,Evergreen Trees,Deciduous Trees,Native Grass,Level,House Faces East,City Limits,Paved |
| Water Source | City |
| Lot Size Area | 28700 |
| Lot Size Acres | 0.66 |
| Road Surface Type | Asphalt |
| Waterfront Y/N | No |
| Road Frontage Type | City Street |
| Irrigation Water Rights Y/N | No |
Amenities
- Foreclosure
- Views
- Short Sale
- New Construction
- Adult 55+
- Lease To Own
- No HOA Fees
- Furnished
- Primary On Main
- Air Conditioning
- Seller Finance
- Green
- Fixer Upper
- Horse
- Golf
- Fireplace
- Deck
- Garage
- Basement
- Pool
Property vs Single Family Average in 80304
Price
Taxes
Year Built
Visits
Information deemed reliable but not guaranteed by the MLS. © 2026 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.
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.
The IRES, LLC Data on this
The real estate listing information and related content displayed on this site is provided exclusively for consumers� personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. This information and related content is deemed reliable but is not guaranteed accurate by elevateMLS.
IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. Copyright © 2026 Vail Multi List, Inc. (VMLS)
The listing broker's offer of compensation is made only to participants of the MLS where the listing is filed.
Pueblo Association of REALTORS®, Inc. All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be
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