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#IR1032572, Jennifer Egbert, Listing office: milehimodern - Boulder
#1025368·
Listing office: Compass - Boulder·
Listing agent: Patricia Dessel·
Listing office phone: 3034756097
$13,000,000 List price
3621 21st St Boulder, CO 80304
4 beds
1 full, 4 partial
6,300 sqft
0.7 acres
$2,063 / sqft
House
Property details
About 3621 21st St
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.
Highlights
HeatingForced Air, Hot Water, Baseboard, Zoned, Radiant
StatusActive
CoolingCentral Air
Size6,300 sqft
BasementYes
Lot size0.66 Acres
Year built2021
ParkingGarage Door Opener, Heated Garage, Oversized
MLS #1025368
Attached garage3 spaces
FireplaceGas, Living Room
Private poolYes
Virtual tour
Summary
- Partial Bathrooms: 4
- Full Bathrooms: 1
- Appliances: Gas Range, Double Oven, Dishwasher, Refrigerator, Bar Fridge, Washer, Dryer, Microwave, Trash Compactor, Freezer, Disposal
- Basement: Yes
- Flooring Type: Wood Floors
- Interior: Study Area, High Speed Internet, Eat-in Kitchen, Cathedral/Vaulted Ceilings, Open Floorplan, Pantry, Walk-In Closet(s), Wet Bar, Kitchen Island, Steam Shower, 9ft+ Ceilings, Split Bedroom Floor Plan
- Fireplace: Gas, Living Room
- Total Bedroom Count: 4
- Garage Space: 3 spaces
- Attached Garage: Yes
- Private Pool: Yes
- Parking: Garage Door Opener, Heated Garage, Oversized
- Exterior: Gas Grill, Hot Tub Included
- Architectural Style: Contemporary/Modern
- Heating: Forced Air, Hot Water, Baseboard, Zoned, Radiant
- Cooling: Central Air
- List Price: $13,000,000
- Price/SqFt: $2,063
- Annual Tax Amount: $54,784
- Tax Year: 2023
- Lot: Sprinklers, Wooded, Level
- Year Built: 2021
- Stories: 2
- Living Area: 6,300 SqFt
- Lot Size: 0.66 Acres
- MLS Number: 1025368
- MLS Name: IRES MLS
- Office Name: Compass - Boulder
- Office Phone: (303) 475-6097
- Listing Agent: Patricia Dessel
Information source: Information and Real Estate Services, LLC. Provided for limited non-commercial use only under IRES Rules. Copyright © 2025 IRES. Information deemed reliable but not guaranteed by the MLS.
Information being provided is 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. Information deemed reliable but is not guaranteed to be accurate; you are advised to verify facts that are important to you. No warranties, expressed or implied, are provided for the data herein, or for their use or interpretation by the user.
Broker Reciprocity is the current compilation of active listings of all Broker Reciprocity subscribers except those listings where the seller or the seller’s agency has opted out of Internet publication by so indicating on the listing contract or by written notice to the Multiple Listing Service. Real estate listings held by other brokerage firms are included in this site and detailed information about them includes the name of the listing brokers. Listing broker has attempted to offer accurate data, but buyers are advised to confirm all items.
Data displayed may be a portion of, and not a complete set of all listings published in the MLS.
Last updated on: 6/10/2025, 4:45:29 AM Eastern. If you have any questions regarding the accuracy of this data, please contact us at help@rockethomes.com.
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$13,000,000
3621 21st St
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Price information
Property sales
| Date | Event | Price |
|---|---|---|
| Jun 14, 2022 | Home Sold | $10,000,000 |
| Feb 19, 2020 | Home Sold | $2,409,000 |
| Apr 05, 2007 | Home Sold | $1,473,500 |
| Dec 23, 2002 | Home Sold | $1,304,000 |
Tax history
| Year | Assessment | Property Tax |
|---|---|---|
| 2023 | $638,062 | $54,784 |
| 2022 | $157,223 | $14,600 |
| 2021 | $161,747 | $13,922 |
| 2020 | $156,993 | $13,665 |
History based on county public records data.
Nearby schools
5
Columbine Elementary School
Public District PK-5
0.6 mi
•3130 Repplier St
7
Crest View Elementary School
Public District KG-5
0.8 mi
•1897 Sumac Ave
8
Foothill Elementary School
Public District KG-5
0.8 mi
•1001 Hawthorn Ave
School ratings are a score out of 10, where 10 is the highest and 1 is the lowest.
Neighborhood
The neighbors living near this home have an average income of $123,370. The majority of Boulder, CO residents have income between $100k-200k annually. The most common type of family is married, no kids. Most residents in this area have masters degree education.
How much money do the neighbors make?
12%
<35k
27%
35k-100k
31%
100k-200k
30%
200k+
What level of education do the neighbors have?
High School Diploma
Post Secondary Degree
Masters Degree
Doctorate
What types of families live nearby?
32%
Single, No Kids
4%
Single, with Kids
41%
Married, No Kids
23%
Married, with Kids
Are the neighbors home owners or renters?
Home Owners
Renters
How old are people in this area?
12%
<11 yrs old
7%
12-17 yrs old
13%
18-34 yrs old
49%
35-64 yrs old
19%
65+ yrs old
What do the neighbors do for fun?
Skiing/snowboarding
Men's Tennis
PGA/LPGA
Where do the neighbors shop?
Nordstrom
Bloomingdales
Chico's
Where do the neighbors go to eat?
California Pizza Kitchen
Bonefish Grill
Chipotle
What do the neighbors drive?
BMW
Lexus
Cadillac
What do the neighbors listen to?
Talk/Personality
News
Classical
All data provided by Home Junction and Claritas
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Frequently asked questions
About 3621 21st St
The listing price of 3621 21st St property is $13,000,000.
The property 3621 21st St is a house located in Boulder, Colorado, 80304.
Active Listing: 3621 21st St is For Sale (Active/New) which means the seller is accepting offers.
The nearby schools for 3621 21st St are: Columbine Elementary School (GreatSchools Rating 5/10), Crest View Elementary School (GreatSchools Rating 7/10), Foothill Elementary School (GreatSchools Rating 8/10), Centennial Middle School (GreatSchools Rating 5/10), Casey Middle School (GreatSchools Rating 3/10), Horizons K-8 School (GreatSchools Rating 8/10), Boulder High School (GreatSchools Rating 8/10), New Vista High School (GreatSchools Rating 7/10), Boulder Preparatory Charter High School (GreatSchools Rating 2/10).
According to the records, the last property tax for 2023 is $54,784 (source: MLS/based on county public records data).
The last sale was on June 14, 2022 for $10,000,000 (source: MLS/tax record).
The property at 3621 21st St has 4 bedrooms and 1 full and 4 half bathrooms.
The property 3621 21st St is 6,300 SqFt (source: MLS/tax record).
The year of construction for 3621 21st St is 2021.
This home is located at 3621 21st St in Boulder, CO and zip code 80304 in the Carolyn Heights neighborhood. This 6,300 square foot home, which was built in 2021, sits on a 0.66 acre lot. Features: 4 bedrooms, 5 bathrooms. It has been listed on Rocket Homes since January 29, 2025 and is currently priced at $13,000,000.
While more than 13 listings in Boulder, CO in May 2025 were sold above asking price, there were more than 41 listings sold at asking price, and more than 121 were sold below. The number of listings in Boulder, CO increased by 21.9% between April and May 2025. In May 2025 median list price was $979,047 and the average listing age was 38 days.
From Rocket Homes Real Estate and based on county public records data.