3633 21st Street
Boulder, CO 80304
- 7 beds
- 5 baths
- 6,988 sqft
- ~3/4 acre lot
- $1,645 per sqft
- 2024 build
- – on site
Exquisite secluded sanctuary in the heart of Carolyn Heights. Tucked into one of Boulder's most prestigious enclaves, this estate offers a rare fusion of luxury, privacy, and relaxed sophistication . Set on a serene, tree-lined .81-acre level lot, this 7-bedroom, 5-bathroom oasis is where inspired design meets effortless living. Stunning views of the Flatirons awaken you each morning from your bed. Those same views tease your senses from the expansive patios with fully retractable doors that blur the lines from inside to outside. Bathed in natural light from soaring windows and skylights, every detail has been thoughtfully curated. Custom walnut doors and paneling welcome you into the home and invite you to explore. The chef's kitchen is a showstopper-featuring custom cabinetry, an oversized marble island, and top-of-the-line Thermador appliances. The open-concept layout flows seamlessly into a lush backyard oasis, perfect for gatherings or quiet moments of retreat by the fire pit. The primary suite is a haven unto itself with vaulted ceilings, a spa-inspired bath, spacious walk-in closet, and private deck access. With multiple flexible living spaces-including a dedicated home office and media room, this home is ready to adapt to your every need. Located moments from North Boulder's best hiking trails, cycling routes, farmers markets, and local eateries-yet nestled in the peaceful privacy of a mature, sought-after neighborhood. Elevated living starts here. LIVE BOULDER, LOVE BOULDER! Original home built in 1987. Home had a studs up remodel that was completed in early 2024.
Last checked:
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Last updated Apr 18, 2025
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MLS# IR1031592 —
This home is listed in more than one place. See it here.
The Building
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Year Built:2024
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Direction Faces:South
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Architectural Style:Contemporary
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Construction Materials:Frame
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Structure Type:House
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Patio And Porch Features:Deck, Patio
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Security Features:Fire Sprinkler System
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Roof:Composition
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Basement:true
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Levels:Tri-Level
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Building Area Total:6988
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Building Area Source:Assessor
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Above Grade Finished Area:4798
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Below Grade Finished Area:2190
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Property Attached:false
Interior
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Interior Features:Eat-in Kitchen, Five Piece Bath, Kitchen Island, Open Floorplan, Pantry, Vaulted Ceiling(s), Walk-In Closet(s)
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Flooring:Tile, Wood
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Fireplace Features:Gas
Room Dimensions
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Living Area:6988
Location
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Latitude:40.04178
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Longitude:-105.27163
The Property
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Property Type:Residential
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Property Subtype:Single Family Residence
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Parcel Number:R0004105
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Property Condition:New Construction
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Possible Use:Residential
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Zoning:RES
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Lot Features:Level, Sprinklers In Front
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Lot Size Acres:0.81
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Lot Size SqFt:35311
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Exclusions:Sellers personal property and any staging items
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View:Mountain(s)
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Fencing:Fenced, Partial
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Vegetation:Wooded
Listing Agent
- Contact info:
- Agent phone:
- (720) 394-1997
- Office phone:
- (720) 577-5503
Taxes
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Tax Year:2024
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Tax Annual Amount:29936
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Tax Legal Description:LOT 1 21ST/LINDEN SUB
Beds
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Bedrooms Total:7
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Upper Level Bedrooms:5
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Lower Level Bedrooms:1
Baths
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Total Baths:5
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Full Baths:3
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Three Quarter Baths:1
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Half Baths:1
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Main Level Baths:1
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Upper Level Baths:3
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Basement Level Baths:1
The Listing
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Virtual Tour URL Unbranded:https://vimeo.com/1076220353
Heating & Cooling
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Heating:Hot Water, Radiant
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Cooling:Air Conditioning-Room, Ceiling Fan(s)
Utilities
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Utilities:Electricity Available, Natural Gas Available
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Sewer:Public Sewer
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Water Source:Public
Appliances
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Appliances:Dishwasher, Dryer, Oven, Refrigerator, Washer
Schools
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Elementary School:Columbine
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Elementary School District:Boulder Valley RE 2
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Middle Or Junior School:Centennial
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High School:Boulder
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High School District:Boulder Valley RE 2
The Community
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Subdivision Name:21st/Linden Sub
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Association:false
Parking
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Parking Total:3
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Parking Features:Oversized
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Attached Garage:true
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Garage Spaces:3
Monthly cost estimate
Asking price
$11,500,000
| Expense | Monthly cost |
|---|---|
|
Mortgage
This calculator is intended for planning and education purposes only. It relies on assumptions and information provided by you regarding your goals, expectations and financial situation, and should not be used as your sole source of information. The output of the tool is not a loan offer or solicitation, nor is it financial or legal advice. |
$61,578
|
| Taxes | $2,494 |
| Insurance | $3,162 |
| Utilities | $240 See report |
| Total | $67,474/mo.* |
| *This is an estimate |
Walk Score®
Provided by WalkScore® Inc.
Walk Score is the most well-known measure of walkability for any address. It is based on the distance to a variety of nearby services and pedestrian friendliness. Walk Scores range from 0 (Car-Dependent) to 100 (Walker’s Paradise).
Bike Score®
Provided by WalkScore® Inc.
Bike Score evaluates a location's bikeability. It is calculated by measuring bike infrastructure, hills, destinations and road connectivity, and the number of bike commuters. Bike Scores range from 0 (Somewhat Bikeable) to 100 (Biker’s Paradise).
Transit Score®
Provided by WalkScore® Inc.
Transit Score measures a location's access to public transit. It is based on nearby transit routes frequency, type of route (bus, rail, etc.), and distance to the nearest stop on the route. Transit Scores range from 0 (Minimal Transit) to 100 (Rider’s Paradise).
Soundscore™
Provided by HowLoud
Soundscore is an overall score that accounts for traffic, airport activity, and local sources. A Soundscore rating is a number between 50 (very loud) and 100 (very quiet).
Air Pollution Index
Provided by ClearlyEnergy
The air pollution index is calculated by county or urban area using the past three years data. The index ranks the county or urban area on a scale of 0 (best) - 100 (worst) across the United Sates.
