#8155137, Alison Sirlin, Listing Office: Live West Realty
#IR1025368·
Listing Office: Compass - Boulder·
Listing Agent: Patricia Dessel·
Listing Office Phone: 3034756097
3621 21st St Boulder, CO 80304
$13,000,000 List price
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
Home typeSingle Family Residence
HeatingBaseboard, Forced Air, Hot Water, Radiant
StatusActive
CoolingCentral Air
Size6,300 sqft
BasementYes
Lot size0.66 Acres
Year built2021
ParkingHeated Garage, Oversized
MLS #IR1025368
Attached garage3 spaces
FireplaceGas, Living Room
Private poolYes
Virtual tour
Summary
- MLS Number: IR1025368
- MLS Name: RECOLORADO
- Office Name: Compass - Boulder
- Office Phone: (303) 475-6097
- Listing Agent: Patricia Dessel
Listings courtesy of REColorado as distributed by MLS GRID.
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6455 S. Yosemite St., Suite 300
Greenwood Village, CO 80111 USA
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Last updated on: 2/5/2025, 11:12:50 PM 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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Seller rebate
0.5% sale price²
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. Residents of Boulder, CO typically earn between $100k-200k each year. The majority of families are married, no kids. Typical level of education for residents in this area is masters degree.
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
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.
Boulder, CO housing market in January 2025 saw over 2 listings sold above listed price, more than 14 sold at listed price and over 52 sold below. Between December and January 2025, Boulder, CO real estate market has seen increase in the number of listings by 11.8%. The median list price of listings available in January 2025 was $983,778, while the average time on the real estate market was 82 days.
From Rocket Homes Real Estate and based on county public records data.