3639 21st St Boulder, CO 80304 / 1607

Map

Residence for Single Family

(UPDATED: 09/28/2025)
  • 6 Beds
  • 3 Baths
  • 7.397 square feet
Sold Mar 2021
$4,200,000
Property Report

Information about property on 3639 21st St, Boulder CO, 80304-1607. Find out owner contacts, building history, price, neighborhood at Homemetry Address Directory.

Property Details

Erected in 2008, this property has near seventy-four hundred square feet of habitable surface and sits on about 2/3 of acre.

Facts

  • Built in 2008
  • Lot size 0,69 acres
  • Floor size 7,397 sqft
  • Construction Frame
  • Rooms 12
  • Bedrooms 6
  • Bathrooms 3,5
  • Stories 2
  • Last remodel year 2007
  • Style A-Frame
  • Basement Improved Basement (Finished)
  • Structure type Other
  • Air conditioning Central
  • Heating & Cooling
  • Heat type Forced air unit
  • Exterior Home Features
  • Exterior material Wood
  • Roof type Concrete
  • Parking & Garage
  • Parking Attached Garage
  • Parking spaces 4

Listing info

  • Last sold Oct 2013 for $3,400,000

Householders and Tenants for 3639 21st St, Boulder CO

Possible residents contact details

Person Name Phone Number Additional Info
Ann M Boyle Age: 61
Residential status:
Homeowner
Blake Henderson Baker
Carolyn B Bondarovich Age: 69
303-440-****
Howard Karawane
303-953-****
Jack T Boyle Age: 27
Residential status:
Homeowner
James A Bondarovich Age: 68
303-413-****
Jim Bondarovich
303-440-****
Timothy F Majors
303-862-****

Purchase History

DateEventPriceSourceAgents
10/07/2013 Sold $3,400,000 Public records
10/04/2013 Sold $3,400,000 Agent Submission Leyla Steele
05/05/2011 Sold $2,600,000 Public records Leyla Steele
05/05/2009 Sold $2,780,000 Public records
08/16/2006 Sold $790,000 Public records

PURCHASE HISTORY 3639 21st St, Boulder CO

08/16/200605/05/201110/07/2013Date$0$200k$400k$600k$800k$1.0M$1.2M$1.4M$1.6M$1.8M$2.0M$2.2M$2.4M$2.6M$2.8M$3.0M$3.2M$3.4MPrices

Cost estimate history

YearTaxAssessmentMarket
2014 N/A $214,750 N/A
2013 $18,056 N/A $2,697,860

Where is 3639 21st St, Boulder CO located on map?

Market Activities

To date, we have no information about market activities in 2025
Mar 2021 Sold
3639 21st St
Price history :
$4.2M
  • Single Family
  • 7,982 sqft
  • 6 beds
  • 6 baths

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21st St Fire Incident History

To date, we have no information about fire incidents in 2025
03 May 2010 Outside equipment fire
3631 21 St, Boulder CO
Property Use —
1 or 2 family dwelling
Area of Origin —
Courtyard, patio, porch, terrace
First Ignition —
Flammable liquid/gas - uncontained
Heat Source —
Spark, ember or flame from operating equipment
10 Feb 2010 Building fires
1770 21st St, Boulder CO
Property Use —
Residential, other
Area of Origin —
Cooking area, kitchen
First Ignition —
Goods not made up, including fabrics & yard goods
Heat Source —
Radiated, conducted heat from operating equipment
30 Jun 2005 Building fires
1770 21st St, Boulder CO
Property Use —
Alcohol or substance abuse recovery center
Area of Origin —
Ceiling & floor assembly, crawl space b/t stories
First Ignition —
Electrical wire, cable insulation
Heat Source —
Heat from powered equipment, other

21st St Incidents registered in FEMA
(Federal Emergency Management Agency)

To date, we have no information about incidents registered in FEMA in 2025
16 Sep 2015 Overheated motor
1770 21st St, Boulder CO
Property Use —
Alcohol or substance abuse recovery center
21 Feb 2014 Arcing, shorted electrical equipment
2961 21 St, Boulder CO
Property Use —
1 or 2 family dwelling
01 Nov 2011 Power line down
2990 21 St, Boulder CO
Property Use —
1 or 2 family dwelling
31 Jul 2010 Outside rubbish, trash or waste fire
1770 21st St, Boulder CO
Property Use —
Outside or special property, other

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Properties Nearby

Street AddressResidens/Landlords
365 21st St, Boulder, CO 80302-8012
Single Family Residential
  • 3 beds
  • 1 bath
  • Lot: 10,106 sqft
  • Built in 1954
 Kenneth Douglas
385 21st St, Boulder, CO 80302-8012
Single Family Residential
  • 2 beds
  • 1 bath
  • Lot: 8,015 sqft
  • Built in 1954
 K A Todd, Kristine A Todd
1919 21st St, Boulder, CO 80302-4509
Multi Family
  • 6 beds
  • 4.75 baths
  • 3,357 sqft
  • Built in 1920
 Caroline E Colvin, Nona B Gandelman
2220 21st St, Boulder, CO 80302-4503
Single Family Residential
  • 2 beds
  • 1 bath
  • 1,613 sqft
  • Built in 1981
 Robert M Aguiar, T Dubach
2222 21st St, Boulder, CO 80302-4503
Single Family
  • 3 beds
  • 2 baths
  • 1,720 sqft
  • Built in 1993
 Donne Ruiz, Donne M Ruiz
2801 21st St, Boulder, CO 80304-2707
Single Family
  • 3 beds
  • 1.5 baths
  • 1,359 sqft
 Robert W Bernthal, Robert W Furnari
2820 21st St, Boulder, CO 80304-2708
Single Family Residential
  • 3 beds
  • 2 baths
  • Lot: 9,235 sqft
  • Built in 1955
 Thumbuddy to Love, LLC, Andrea Ness
2920 21st St, Boulder, CO 80304-2748
Single Family Residential
  • 3 beds
  • 1 bath
  • Lot: 7,710 sqft
  • Built in 1956
 Dorothy V Auge, Robert G Auge
3631 21st St, Boulder, CO 80304-1607
Single Family Residential
  • 5 beds
  • 3 baths
  • 6,784 sqft
  • Built in 1992
 Jill A Edison, Gary D Galagher

21st Street

Houses for Sale on 21st Street (1)

Recently Sold Homes on 21st Street (8)

Recent rentals on 21st Street (2)

Boulder, CO

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FAQ about the house at 3639 21st St, Boulder, CO


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