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$3,500,000
3633 21st St, Boulder, CO, 80304
7
Beds
5
Baths
6,785
Square Feet
Carolyn Heights is Boulder's most desirable neighborhood. A rare & extremely private estate on almost an acre down a quiet lane just 5 minutes from downtown shops & restaurants. Classic meets modern in this bright, spacious complete remodel. Features a luxurious master suite w/ striking Flatirons views. The setting is spectacular on a private .8 acre lot w/ mature trees, lush landscape, wraparound deck & covered outdoor room for entertaining Al Fresco bordered by the tranquil Farmer's Ditch.
Offered By
Rich Gribbon, RE/MAX of Boulder, Inc
Property Details
Property Type
Residential
Status
Closed
Bedrooms
7
Bathrooms (Full)
3
Property Sub Type
Single Family Residence
Square Feet
6,785
MLS #
828173
Bathrooms (¾)
1
Bathrooms (Half)
1
Flooring
Wood
Appliances
Gas Range, Dishwasher, Refrigerator, Washer, Dryer, Microwave, Water Purifier Owned
LAUNDRY FEATURES
Sink
FIREPLACE FEATURES
Gas, Great Room
Heating
Hot Water, Radiant
Cooling
Evaporative Cooling
Utility Features
Natural Gas Available, Electricity Available
SEWER
Public Sewer
WATER SOURCE
City
Year Built
1987
Basement
Full, Partially Finished, Daylight
FINISHED BASEMENT SIZE
0.0
Roof
Composition
EXTERIOR FEATURES
Sprinkler System, Oversized Garage
Parking Features
Garage Door Opener
Fence
Partial
Lot Features
Wooded, Evergreen Trees, Deciduous Trees, Level, Abuts Ditch, House Faces South
Garage spaces
3
View
Hills
CITY
Boulder
SUBDIVISION
21st/Linden Sub
COUNTY
Boulder
AREA
Boulder
STATE
CO
TAX AMOUNT
16537.0
LATEST UPDATE
2026-01-23T08:36:04.427Z
PRICE CHANGE(S)
$3,750,000 Oct 21, 2025
Property Details
Property Type
Residential
Status
Closed
Bedrooms
7
Bathrooms (Full)
3
Property Sub Type
Single Family Residence
Square Feet
6,785
MLS #
828173
Bathrooms (¾)
1
Bathrooms (Half)
1
New Properties On Market
66
43%
Increase In New Listings
Average Asking Price
$1,989,094
$1,087,768 Decrease In Avg Asking Price
Average Asking Price / Sq. Ft.
$763
$86 Decrease In List Price/Sq. Ft.
Average Days On Market
15
20 Day
Decrease In Days On Market
Data as of Apr 13, 2026.
Remaining statistics above are calculated on activity within the period from Feb 01, 2026 to Mar 31, 2026.
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Purchase Price
Loan Type
Down Payment
HOA Dues
Interest Rate
Estimated Property Taxes
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Private Mortgage Insurance
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