About Home value Property history Tax history Market statistics Schools Neighborhood Places of interest

3633 21st St, Boulder, CO 80304

$8,783,000

Last sold 01/14/2022 for $4.5M

7
bed
5
bath
6,785
Sqft ($663/Sqft)

House not for sale

About 3633 21st St

Property type House

Neighborhood

Year built 1987

HOA fee $0/month

Lot size 0.81 Acre

Movoto estimate

Parking 3 garage spaces

Property description

Treat yourself to the premier location in Carolyn Heights, Boulder's most desirable neighborhood! Adorned with huge cottonwoods, lush landscaping. Gated driveway, and estate living. Recently remodeled with a mix of modern and classic blended for comfort and livability. This home has one of the most curated outdoor living areas on the market - enjoy evening meals and entertaining, the covered tree lined outdoor spaces and wrap-around deck and offer access to the fresh surrounding and beauty of the 35,000 square foot lot. Subtly located entry gate ensures privacy off a private driveway in one of the nicest areas of Boulder.

Listed by

Listing Agent - Joel Ripmaster

Listing Agent Contact: 3034433377

Listing Office - Colorado Landmark-Boulder

Source: IRESMLS

MLS#952227 • last updated 11 months ago

Movoto checked IRESMLS for data 8 minutes ago

Overview
Cooling/AC	Ceiling Fan(s)
Heating	Hot Water, Radiant
Levels/Style	Two
MLS #	952227
Type	Residential
Status	Sold
SubType	Single Family Residence
Living Area	6785
Lot Size (Acres)	0.81
Annual Tax	22405

Interior
# Three-Quarter Baths	1
Total # of Bathrooms	5
# Full Baths	3
# Half Baths	1
Total # of Bedrooms	7
Basement	Full, Daylight
Flooring	Wood
Fireplace Desc	Gas, Great Room
Window Features	Window Coverings
Interior Features	Eat-in Kitchen, Separate Dining Room, Cathedral Ceiling(s), Open Floorplan, Pantry, Wood Windows, Walk-In Closet(s), Kitchen Island

Exterior
Roof	Composition
Construction	Frame
Exterior Features	Sprinkler System, Oversized Garage
Patio & Porch	Patio, Deck
Lot Features	Wooded, Evergreen Trees, Deciduous Trees, Level, Abuts Ditch, House Faces South
Fencing	Partial

Amenities / Utilities
Green Features: Energy Efficiency	Sun Space, Southern Exposure, Windows
Utilities	Natural Gas Available, Electricity Available
Sewer/ Septic	Public Sewer
Electricity	Xcel Energy
Water Source	City
Appliances	Gas Range, Dishwasher, Refrigerator, Washer, Dryer, Microwave

Location
View	Hills
County	Boulder
Subdivision	21st/Linden Sub
Middle School	Centennial
High School District	Boulder Valley Dist RE2
APN	R0004105

Lot/ Land Details
Possible Use	Single Family

$8.78M

Range: $7.72M-$9.83M

Last 30 days

Lower your payment with the loan terms that fit you.

Feb 2026
MLS # IR1051043
Feb 6, 2026 Listed
$10,000,000
Feb 2026
MLS # 1051043
Feb 6, 2026 Listed
$10,000,000 (-13.0%)
Apr 2025
MLS # IR1031592
Apr 18, 2025 Listed
$11,500,000
Apr 2025
MLS # 1031592
Apr 18, 2025 Listed
$11,500,000 (+155.6%)
Jan 2022
MLS # 952227
Jan 14, 2022 Sold
$4,500,000
Sep 30, 2021 Listed
$5,150,000 (+47.1%)
Jan 2022
MLS # IR952227
Jan 14, 2022 Sold
$4,500,000 (-9.1%)
Oct 26, 2021 Active
—
Oct 18, 2021 Price Change
$4,950,000 (-3.9%)
Sep 30, 2021 Listed
$5,150,000
Sep 2017
MLS # 3105735
Sep 7, 2017 Sold
$3,500,000
Aug 7, 2017 Under Contract
—
Jul 27, 2017 Price Change
$3,750,000 (-6.1%)
May 25, 2017 Listed
$3,995,000
Sep 2017
MLS # 828173
Sep 7, 2017 Sold
$3,500,000 (-6.7%)
Jul 31, 2017 Listed
$3,750,000
May 2017
MLS # 821241
May 25, 2017 Listed
$3,995,000 (+56.7%)
Apr 2014
MLS # 1223799
Apr 16, 2014 Sold
$2,550,000
Mar 21, 2014 Under Contract
—
Apr 2014
MLS # 726453
Apr 16, 2014 Sold
$2,550,000 (-7.3%)
Jan 27, 2014 Listed
$2,750,000
Mar 2014
MLS # 2085865
Mar 4, 2014 Under Contract
—
Aug 2013
MLS # 717641
Aug 22, 2013 Listed
$2,750,000 (+58.5%)
Jun 2011
Public Records
Jun 3, 2011 Sold
$1,735,000

Year Property taxes Tax assessment
2024
$29,936 +2.8%

$340,628 -0.07%
2023
$29,119 +27.0%

$340,876 +38.02%
2022
$22,935 +4.9%

$246,976 -4.05%
2021
$21,870 -2.4%

$257,401
2020
$22,405 +1.6%

$257,401
2019
$22,063 +20.7%

$257,401 +22.13%
2018
$18,273 +10.5%

$210,766 -9.55%
2016
$16,537 +5.6%

$233,013
2015
$15,660

—

3633 21st St
$4.5M
Carolyn Heights
$6.84M +101% y/y
80304
$1.52M -31% y/y
Boulder
$999K -29% y/y

No chart available

Statistics calculated by Movoto

	Est. value	Bed/bath	Sqft	mi
3639 21st St, Boulder, CO 80304	$7,487,000	4/1	5,867	0.03
3631 21st St, Boulder, CO 80304	$5,419,000	5/3	4,494	0.03
3686 19th St, Boulder, CO 80304	$3,436,000	4/3	4,046	0.03
2060 Neher Ln, Boulder, CO 80304	$2,832,000	6/3	2,378	0.05
2050 Neher Ln, Boulder, CO 80304	$2,614,000	3/2	1,664	0.05
2070 Neher Ln, Boulder, CO 80304	$4,779,000	5/3	3,124	0.05
3660 19th St, Boulder, CO 80304	$5,617,000	5/4	5,968	0.05
3722 19th St, Boulder, CO 80304	$2,661,000	4/1	2,427	0.05

Estimated values are based on public record data and automated valuation models. Values are not guaranteed and may not reflect current market conditions.