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For sale
$13,000,000
4beds
7,099sqft

3621 21st St, Boulder, CO 80304

4beds
7,099sqft
Residential-detached, residential
Built in 2021
0.66 Acres
3 Attached garage spaces
$1,831 price/sqft

What's special

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 ...

191 days
on Zillow
|
1,600
|
59
|
Source: IRES,MLS#: 1025368MLS Logo
Travel times

Kitchen

Living Room

Primary Bedroom

Outdoor 1

Foyer

Zillow last checked: 7 hours ago

Listing updated: June 01, 2025 at 01:33pm

Listed by:

Patricia Dessel 303-475-6097,

Compass - Boulder

Source: IRES,MLS#: 1025368MLS Logo

Facts & features

Interior

Bedrooms & bathrooms
  • Bedrooms: 4
  • Bathrooms: 5
  • Full bathrooms: 1
  • 3/4 bathrooms: 3
  • 1/2 bathrooms: 1
  • Main level bedrooms: 1
Primary bedroom
  • Area: 289
  • Dimensions: 17 x 17
Bedroom 2
  • Area: 204
  • Dimensions: 12 x 17
Bedroom 3
  • Area: 240
  • Dimensions: 15 x 16
Bedroom 4
  • Area: 256
  • Dimensions: 16 x 16
Kitchen
  • Area: 350
  • Dimensions: 14 x 25
Living room
  • Area: 806
  • Dimensions: 26 x 31
Heating
  • Forced Air, Hot Water, Baseboard, Radiant
Cooling
  • Has cooling: Yes
Appliances
  • Included: Gas Range/Oven, Double Oven, Dishwasher, Refrigerator, Bar Fridge, Washer, Dryer, Microwave, Trash Compactor, Freezer, Disposal
  • Laundry: Sink, Washer/Dryer Hookups, Main Level
Features
  • Study Area, High Speed Internet, Eat-in Kitchen, Cathedral/Vaulted Ceilings, Open Floorplan, Pantry, Walk-In Closet(s), Wet Bar, Kitchen Island, Steam Shower, High Ceilings, Split Bedroom Floor Plan, Open Floor Plan, Walk-in Closet, Media Room, 9ft+ Ceilings
  • Flooring: Wood, Wood Floors, Tile
  • Windows: Window Coverings, Double Pane Windows
  • Basement: Full
  • Has fireplace: Yes
  • Fireplace features: Gas, Living Room
Interior area
  • Total structure area: 6,300
  • Total interior livable area: 7,099 sqft
  • Finished area above ground: 4,544
  • Finished area below ground: 1,756

Property

Parking
  • Total spaces: 3
  • Parking features: Garage Door Opener, Heated Garage, Oversized
  • Attached garage spaces: 3
  • Details: Garage Type: Attached
Accessibility
  • Accessibility features: Level Lot, Level Drive, Accessible Entrance, Main Floor Bath, Accessible Bedroom, Main Level Laundry
Features
  • Levels: Two
  • Stories: 2
  • Patio & porch: Patio
  • Exterior features: Gas Grill, Hot Tub Included
  • Has private pool: Yes
  • Pool features: Private
  • Has spa: Yes
  • Spa features: Heated
  • Fencing: Fenced
Lot
  • Size: 0.66 Acres
  • Features: Lawn Sprinkler System, Wooded, Level, Within City Limits
Details
  • Additional structures: Kennel/Dog Run
  • Parcel number: R0004965
  • Zoning: RES
  • Special conditions: Private Owner

Construction

Type & style
  • Home type: SingleFamily
  • Architectural style: Contemporary/Modern
  • Property subtype: Residential-Detached, Residential
Materials
  • Wood/Frame, Brick, Block, Stone
  • Roof: Composition
Condition
  • Not New, Previously Owned
  • New construction: No
  • Year built: 2021

Utilities & green energy

  • Electric: Electric, Xcel
  • Gas: Natural Gas, Xcel
  • Sewer: City Sewer
  • Water: City Water, City
  • Utilities for property: Natural Gas Available, Electricity Available, Cable Available
Green energy
  • Energy efficient items: Southern Exposure

Community & HOA

Community
  • Security: Fire Sprinkler System
  • Subdivision: Carolyn Heights
HOA
  • Has HOA: No
Location
  • Region: Boulder

Financial & listing details

  • Price per square foot: $1,831/sqft
  • Tax assessed value: $9,523,300
  • Annual tax amount: $54,784
  • Date on market: 1/29/2025
  • Listing terms: Cash,Conventional
  • Exclusions: Personal Property And Staging Items
  • Electric utility on property: Yes
  • Road surface type: Paved, Asphalt