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$12,000,000

Listing Price

4beds

1baths

6,300sqft

28,700sqft lot

3621 21st St, Boulder, CO 80304

Member Features

Find Real Estate Bargain!

  • Full foreclosure details

  • Home value, equity and ownership info

  • Find homes priced below market

  • Get full access with a FREE Account

Already a member?

For Sale

Off Market

Single Family

Home type

1008.27

Price / sqft

2021

Year built

Home Details

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,

Interior Details

Square Feet
  • 6300

Bedrooms
  • 4

Bathrooms
  • 1

Heating
  • Has Heating:

    Yes

  • Heating Type:

    Forced Air With Air Conditioning

Cooling
  • Has Cooling:

    Yes

  • Cooling Type:

    Central

Fuel
  • Has Fuel:

    No

  • Fuel Type:

    N/A

Basement
  • Has Basement:

    No

  • Basement Type:

    Partial

Flooring
  • Has Flooring:

    No

  • Flooring Type:

    N/A

Fireplace
  • Has Fireplace:

    Yes

  • Fireplace Type:

    N/A

Property Details

Lot Size
  • 28700

Water
  • No

Sewer
  • No

Parking
  • Type:

    Garage, Attached

  • Location:

    N/A

  • Status:

    N/A

  • Number of Spaces:

    2

Deck
  • N/A

Patio
  • N/A

Fence
  • N/A

Pool
  • N/A

Porch
  • N/A

Stoop
  • N/A

Breezeway
  • N/A

Construction Details

Number of Stories
  • N/A

Style
  • A-frame

Exterior
  • Wood Shingle

Foundation
  • N/A

Roof
  • N/A

Roofing Material
  • Asphalt

Tax History

Year

Amount

Land

Improvement

Percent Change

Assessment

2019

$13,456

$68,569

$88,424

--%

$156,993

2019

$13,456

$68,569

$88,424

--%

$156,993

2018

$12,858

$69,048

$79,265

--%

$148,313

2017

$12,456

$69,048

$79,265

--%

$148,313

2016

$12,664

$58,506

$87,791

--%

$146,297

2014

$10,145

$65,192

$52,807

--%

$117,999

2013

$9,921

$65,192

$52,807

--%

$117,999

2012

$9,235

$38,128

$72,118

--%

$110,246

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Average Home Price in 80304

Nearby Properties

Zip Code

Price

Bed

Bath

Sqft

Lot

Sold Date

$6,500,000

6 Beds

6 Baths

5,356 Sqft

14,871 Lot (sqft)

Sold 05/04/2026

$12,000,000

4 Beds

1 Baths

6,300 Sqft

28,700 Lot (sqft)

Sold 02/11/2026

$5,500,000

4 Beds

2.25 Baths

5,496 Sqft

24,872 Lot (sqft)

Sold 09/18/2026

$10,000,000

7 Beds

4.25 Baths

6,988 Sqft

35,311 Lot (sqft)

Sold 02/06/2026

percent-home-icon

Calculators

Mortgage

Mortgage Calculator

Calculate your monthly mortgage payments.
Household Income
70,000
$
Home price
12,000,000
$
Down payment
2,400,000
$
Mortgage Rate
6.5
%
Loan Term
Property Tax Rate
1.1
%
Homeowner's Insurance (Annual)
72,000
$
HOA (Monthly)
0
$
PMI
0
$
$77,679
Your Payment
Total Monthly Payment:$77,679
Percent of Income:1332%
Affordable:No

Details for 3621 21ST ST

Property Debt

Foreclosure Contact Details