OFF MARKET

Off Market Jan 2006 for $1.1M

$2,947,248

Est. refi paymentEst. refi $7,628/mo

•

3,962

sq ft

643 Mapleton Ave, Boulder, CO 80304

About this home

Single-familyProperty Type

1895Year Built

6,316 sq ftLot Size

$744Est. Price/Sq.Ft.

2 car garageParking

Listed by • RE/MAX of Boulder, Inc

Contact: 3034497000

Bought with Kimberly Thompson • Slifer Smith & Frampton-Niwot

•303-652-8800 (broker)

Redfin checked: 2 minutes ago

•Source:IRES as Distributed by MLS Grid #468107

Redfin Estimate

$2,947,248

$1.8M since sold in January 2006$28K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 25.9% higher than the average sale price ($2.34M) of 6 comparable homes.

SOLD AUG 27, 2026
$3,295,000
A
4 beds3 baths2,463 sq ft
1013 Mapleton Ave, Boulder, CO 80304
SOLD MAY 29, 2026
$3,200,000
B
3 beds3.5 baths2,384 sq ft
615 Spruce St, Boulder, CO 80302
SOLD JUN 12, 2026
$1,544,000
C
4 beds3 baths2,484 sq ft
1020 Portland Pl, Boulder, CO 80304
SOLD APR 30, 2026
$2,000,000
D
4 beds2 baths2,697 sq ft
3056 8th St, Boulder, CO 80304
Compass - Denver
SOLD JUL 2, 2026
$2,400,000
E
3 beds3.5 baths3,272 sq ft
2236 17th St, Boulder, CO 80302
SOLD MAY 13, 2026
$1,608,120
F
4 beds2.5 baths3,077 sq ft
964 Grant Pl, Boulder, CO 80302

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Earn from this home

Sell

$2,363,991

Est. take-home

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Est. cash available

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Rent

$6,591/mo

Redfin rental estimate

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Market trends in 80304, CO

Last updated August 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-List Price

97.3%

+0.1% MoM

Median sale price

$1.5M

$2K MoM

Avg. days on market

72d

9 days MoM

Recently sold homes

120

8 MoM

New listings for sale

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$695,000
2 beds2.5 baths1,368 sq ft
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OPEN SAT, 10AM TO 12PM
$1,599,000
3 beds3 baths2,220 sq ft
1969 Joslyn Ct, Boulder, CO 80304
NEW 29 HRS AGO
$1,050,000
Studio2 baths2,548 sq ft
3090 7th St, Boulder, CO 80304
Kristin Geesey • Iconic Colorado Properties, LLC
OPEN SAT, 11AM TO 1PM
$1,675,000
5 beds3 baths2,318 sq ft
1464 Sumac Ave, Boulder, CO 80304
TR Swanwick • The Agency - Boulder
OPEN SUN, 1PM TO 4PM
$1,300,000
3 beds2.5 baths2,435 sq ft
3955 Broadway St, Boulder, CO 80304
VIDEO TOUR
$2,800,000
3 beds3 baths4,438 sq ft
543 Linden Park Dr, Boulder, CO 80304
OPEN SUN, 11AM TO 1PM
$438,000
1 bed1 bath622 sq ft
4655 13th St, Boulder, CO 80304
OPEN SAT, 10AM TO 12PM
$1,499,000
3 beds3.5 baths3,131 sq ft
15 Arrowleaf Ct, Boulder, CO 80304
$2,395,000
5 beds4.5 baths3,649 sq ft
4165 17th St, Boulder, CO 80304
$247,926
3 beds2 baths1,443 sq ft
903 Rosewood Ave, Boulder, CO 80304
Khem Chauhan • 303 Living LLC
See all

Provided by Redfin

Sale history for 643 Mapleton Ave

Date

Event

Price

IRES as Distributed by MLS Grid #1044438

Apr 2, 2026

Listing Removed

—

Sep 25, 2025

Listed

$5,395,000

$1,362/sq ft

REColorado as Distributed by MLS Grid #IR1026643

Sep 16, 2025

Listing Removed

—

IRES as Distributed by MLS Grid #1026643

Sep 16, 2025

Listing Removed

—

Feb 21, 2025

Listed

$5,800,000

$1,464/sq ft

Feb 19, 2025

Coming Soon

IRES as Distributed by MLS Grid #1018730

Dec 3, 2024

Listing Removed

—

Sep 18, 2024

Listed

$5,800,000

$1,464/sq ft

Sep 16, 2024

Coming Soon

IRES as Distributed by MLS Grid #630442

Apr 21, 2011

Listing Removed

—

Apr 14, 2011

Price Changed

$2,148,000

$542/sq ft

Apr 7, 2011

Price Changed

$2,148,500

$542/sq ft

Apr 1, 2011

Price Changed

$2,149,000

$542/sq ft

Mar 25, 2011

Price Changed

$2,149,500

$543/sq ft

Jan 21, 2011

Price Changed

$2,149,975

$543/sq ft

Jan 14, 2011

Price Changed

$2,149,980

$543/sq ft

Dec 17, 2010

Price Changed

$2,149,985

$543/sq ft

Dec 14, 2010

Listed

$2,149,990

$543/sq ft

IRES as Distributed by MLS Grid #567965

Jun 30, 2008

Listing Removed

—

May 3, 2008

Listed

$2,390,000

$603/sq ft

IRES as Distributed by MLS Grid #544682

Dec 7, 2007

Listing Removed

—

Aug 24, 2007

Listed

$2,450,000

$618/sq ft

IRES as Distributed by MLS Grid #468107

Jan 3, 2006

Sold

$1,167,500

$295/sq ft

Oct 1, 2005

Listed

$1,340,000

$338/sq ft

IRES as Distributed by MLS Grid #443285

May 20, 2005

Listing Removed

—

Mar 10, 2005

Listed

$1,390,000

$351/sq ft

Public Records

Dec 18, 1975

Sold

$78,000

$20/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$19,218 (+2.1%)

$97,813 + $103,738

$201,551

2024

$18,826 (+1.8%)

$97,813 + $103,738

$201,551

2023

$18,499 (+13.1%)

$100,151 + $114,061

$214,212

2022

$16,358 (+4.9%)

$103,837 + $114,061

$217,898

2021

$15,598 (+5.9%)

$75,665 + $100,483

$176,148

2020

$14,728 (+1.6%)

$77,842 + $103,375

$181,217

2019

$14,502 (+12.0%)

$72,144 + $97,054

$169,198

2018

$12,951 (+3.2%)

$72,144 + $97,054

$169,198

2017

$12,546 (+13.1%)

$65,232 + $84,146

$149,378

2016

$11,093 (+5.6%)

$65,232 + $84,146

$149,378

2015

$10,505 (+11.0%)

$61,929 + $66,227

$128,156

2014

$9,468 (+2.3%)

$39,720 + $70,406

$110,126

2013

$9,260 (−1.0%)

$39,720 + $70,406

$110,126

2012

$9,356 (+0.9%)

$39,720 + $70,406

$110,126

2011

$9,273 (+1.1%)

$23,164 + $88,515

$111,679

2010

$9,168 (−3.6%)

$23,164 + $88,515

$111,679

2009

$9,508

$45,370 + $68,060

$113,430

Tax history for 643 Mapleton Ave

Year

Property tax

Land + Additions

Assessment*

2025

$19,218 (+2.1%)

$97,813 + $103,738

$201,551

2024

$18,826 (+1.8%)

$97,813 + $103,738

$201,551

2023

$18,499 (+13.1%)

$100,151 + $114,061

$214,212

2022

$16,358 (+4.9%)

$103,837 + $114,061

$217,898

2021

$15,598 (+5.9%)

$75,665 + $100,483

$176,148

2020

$14,728 (+1.6%)

$77,842 + $103,375

$181,217

2019

$14,502 (+12.0%)

$72,144 + $97,054

$169,198

2018

$12,951 (+3.2%)

$72,144 + $97,054

$169,198

2017

$12,546 (+13.1%)

$65,232 + $84,146

$149,378

2016

$11,093 (+5.6%)

$65,232 + $84,146

$149,378

2015

$10,505 (+11.0%)

$61,929 + $66,227

$128,156

2014

$9,468 (+2.3%)

$39,720 + $70,406

$110,126

2013

$9,260 (−1.0%)

$39,720 + $70,406

$110,126

2012

$9,356 (+0.9%)

$39,720 + $70,406

$110,126

2011

$9,273 (+1.1%)

$23,164 + $88,515

$111,679

2010

$9,168 (−3.6%)

$23,164 + $88,515

$111,679

2009

$9,508

$45,370 + $68,060

$113,430

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Zoning
Permits

Beds

Baths

Stories

—

Lot width

—

Lot depth

—

Lot size

6,332 Sq. Ft.

Year renovated

1995

Sq. Ft.

3,239

Year built

1900

Style

Single Family Residential

County

Boulder County

APN

R0008802

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 2, 2026.

Property details

Parking

Parking Features
Covered Spaces: 2
Garage: Yes
Attached Garage: Yes
Garage Spaces: 2

Interior

Bathroom Information
Bathrooms (Full): 1
Bathrooms (Half): 0
Bathrooms (Three Quarter): 1

Bedroom Information
Bedrooms Total: 4

Heating & Cooling
Cooling: Yes
Ceiling Fan(s)
Heating: Yes
Hot Water, Baseboard, Radiator, Wood/Coal

Interior Features
Gas Range/Oven, Dishwasher, Refrigerator, Washer, Dryer
Study Area, High Speed Internet, Separate Dining Room

Room Information
Basement: Partial, Walk-Out Access

Exterior

Exterior Features
Lighting
Fencing: Fenced, Wood
Roof: Composition

Land Information
Road Surface Type: Paved, Asphalt

Lot Information
Horse(s): No
Lot Features: Curbs, Gutters, Sidewalks, Fire Hydrant within 500 Feet, Corner Lot, Level, Historic District
Other Structures: Kennel/Dog Run
Road Frontage Type: City Street
Zoning: LRE

Property Information
Property Type: Residential
View: Yes
Waterfront: No

Subdivision Information
Subdivision Name: Mapleton
MLS Area Major: Boulder

Building Information
Above Grade Finished Area: 2960
Below Grade Finished Area: 687
Building Area Total: 2960
Construction Materials: Stone

Financial

Tax Information
Parcel Number: R0008802
Tax Annual Amount: 4866
Tax Year: 2004

Financial Information
Listing Terms: Cash, Conventional, FHA

Utilities

Utility Information
Utilities: Natural Gas Available, Electricity Available, Cable Available
Electric: Electric,xcel
Gas: Natural Gas,xcel
Sewer: City Sewer

Location

HOA Information
Association: No
Association Fee: 0

School Information
High School District: Boulder Valley Dist RE2
Elementary School: WHITTIER
Middle or Junior School: CASEY
High School: BOULDER

Location Information
Directions: Broadway to Mapleton Ave. West to NW corner of 7th St.
Unparsed Address: 643 Mapleton Ave Boulder CO 80304
Street Number: 643
Street Name: Mapleton
Street Suffix: Ave
City: Boulder
State or Province: CO
County or Parish: Boulder
Country: US
Postal Code: 80304
Coordinates: -105.288019,40.020594
Latitude: 40.020594
Longitude: -105.288019

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 3,239
Stories: —
Lot Size: 6,332 square feet
Style: Single Family Residential
Year Built: 1900
Year Renovated: 1995
County: Boulder County
APN: R0008802

Home facts updated by county records on Sep 2, 2026

Other

Listing Information
Attribution Contact: 3034497000
Close Price: $1,167,500
Photos Count: 10
Special Listing Conditions: Private Owner
Standard Status: Closed

Listing Date Information
Close Date: Tuesday, January 3, 2006
Cumulative Days on Market: 300
Days on Market: 95
Listing Contract Date: Saturday, October 1, 2005
Modification Timestamp: Sunday, November 10, 2024 2:42 AM

Home Information
Levels: Two
Window Features: Window Coverings
Year Built: 1895

Green Information
Green Energy Efficient: Southern Exposure

Around this home

Schools

Whittier Elementary School

Public K-5 • Assigned • 1.0mi

6/10

Casey Middle School

Public 6-8 • Assigned • 0.4mi

5/10

Boulder High School

Public 9-12 • Assigned • 0.8mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

There's a distinctly European ease to Boulder — a town where café culture and mountain culture coexist effortlessly. Pearl Street's patios stay full year-round, cyclists outnumber cars on weekend mornings, and the Flatirons loom just close enough to...
2 months ago • Boulder
Chuck Klijewski
Redfin agent
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Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

4/10 Fire Factor

2% chance of being in a wildfire in next 30 years

3/10 Heat Factor

7 days above 90° expected this year, 19 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

2/10 Air Factor

2 unhealthy days expected this year, 2 days in 30 years

Provided by First Street

Historical weather

Boulder, CO • 80304

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 10.5 hours in June and 6 hours in December, placing it above the U.S. average for solar exposure.

10.5 hrs

6 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$2.80M – $3.39M

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Home values near 643 Mapleton Ave

Data from public records.

Address	Redfin Estimate
617 Mapleton Avenue, Boulder, CO 4 Beds \| 5.5 Baths \| 4052 Sq. Ft.	$4,765,591
712 Mapleton Avenue, Boulder, CO 3 Beds \| 1.5 Baths \| 2642 Sq. Ft.	$2,002,929

Address	Redfin Estimate
625 Mapleton Avenue, Boulder, CO 4 Beds \| 2.5 Baths \| 3554 Sq. Ft.	$3,280,146
640 Mapleton Avenue, Boulder, CO 3 Beds \| 3 Baths \| 3186 Sq. Ft.	$3,438,785

Address	Redfin Estimate
711 Mapleton Avenue, Boulder, CO 3 Beds \| 2 Baths \| 2666 Sq. Ft.	$1,581,952
735 Mapleton Avenue, Boulder, CO 5 Beds \| 3.5 Baths \| 4508 Sq. Ft.	$3,945,248

Property information provided by IRES as Distributed by MLS Grid when last listed in 2005. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 80304, CO

Sale history for 643 Mapleton Ave

Tax history for 643 Mapleton Ave

Public record

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 80304

Home values near 643 Mapleton Ave

More real estate resources