Google street view image for 1040 Mapleton Ave, Boulder, CO 80304

Off Market Nov 1987 for $671K

$4,509,599

Est. refi paymentEst. refi $4,524/mo

•

2.5 ba

•

5,146

sq ft

1040 Mapleton Ave, Boulder, CO 80304

About this home

1040 Mapleton Ave is a 5,146 square foot house on a 0.81 acre lot with 4 bedrooms and 2.5 bathrooms. - it last sold on November 27, 1987 for $671,900. Based on Redfin's Boulder data, we estimate the home's value is $4,509,599.

Single-familyProperty Type

1905Year Built

0.81 acresLot Size

$876Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$4,509,599

$3.8M since sold in November 1987$305K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 56.3% higher than the average sale price ($2.89M) of 6 comparable homes.

SOLD SEP 1, 2026
$2,150,000
A
4 beds2.5 baths2,680 sq ft
1730 Bluff St, Boulder, CO 80304
SOLD AUG 27, 2026
$3,295,000
B
4 beds3 baths2,463 sq ft
1013 Mapleton Ave, Boulder, CO 80304
SOLD FEB 25, 2026
$2,700,000
C
4 beds3 baths3,675 sq ft
625 Concord Ave, Boulder, CO 80304
SOLD JUN 12, 2026
$1,544,000
D
4 beds3 baths2,484 sq ft
1020 Portland Pl, Boulder, CO 80304
SOLD JUL 15, 2026
2230 Knollwood Dr, Boulder, CO 80302
$3,750,000
E
4 beds3 baths4,046 sq ft
2230 Knollwood Dr, Boulder, CO 80302
SOLD MAY 4, 2026
$3,875,000
F
4 beds3 baths3,878 sq ft
2085 Balsam Dr, Boulder, CO 80304

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Earn from this home

Sell

$4,248,663

Est. take-home

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Refinance

Est. cash available

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Rent

$7,443/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

OPEN TODAY, 11AM TO 1PM
$1,295,000
3 beds2 baths1,890 sq ft
3065 23rd St, Boulder, CO 80304
OPEN TODAY, 1PM TO 3PM
$1,600,000
3 beds3.5 baths3,392 sq ft
2748 Winding Trail Dr, Boulder, CO 80304
$1,069,500
4 beds2 baths1,812 sq ft
2445 Forest Ave, Boulder, CO 80304
OPEN TODAY, 1PM TO 3PM
$2,695,000
5 beds3.5 baths3,513 sq ft
3560 16th St, Boulder, CO 80304
$1,549,000
4 beds3 baths3,968 sq ft
3540 19th St, Boulder, CO 80304
Jennifer Crow • RE/MAX Professionals
3D WALKTHROUGH
$820,000
3 beds1.5 baths1,400 sq ft
3565 19th St, Boulder, CO 80304
FOR SALE BY OWNER
$750,000
3 beds2 baths1,552 sq ft
1683 Yellow Pine Ave, Boulder, CO 80304
$1,741,337
3 beds3.5 baths1,999 sq ft
1150 Violet Ave, Boulder, CO 80304
$695,000
2 beds2.5 baths1,368 sq ft
4555 13th St Unit 2A, Boulder, CO 80304
3D & VIDEO TOUR
$1,599,000
3 beds3 baths2,220 sq ft
1969 Joslyn Ct, Boulder, CO 80304
See all

Provided by Redfin

Sale history for 1040 Mapleton Ave

Year

Property tax

Land + Additions

Assessment*

2025

$39,375 (+1.6%)

$261,188 + $151,763

$412,951

2024

$38,750 (+1.8%)

$261,188 + $151,763

$412,951

2023

$38,078 (+12.8%)

$272,563 + $168,364

$440,927

2022

$33,751 (+4.9%)

$276,248 + $168,364

$444,612

2021

$32,184 (−4.0%)

$195,802 + $167,641

$363,443

2020

$33,527 (+1.6%)

$201,437 + $172,465

$373,902

2019

$33,014 (+7.9%)

$225,783 + $159,388

$385,171

2018

$30,588 (+3.2%)

$225,783 + $159,388

$385,171

2017

$29,631 (+22.2%)

$225,072 + $127,728

$352,800

2016

$24,254 (+5.6%)

$225,072 + $127,728

$352,800

2015

$22,967 (+29.7%)

$177,747 + $102,445

$280,192

2014

$17,714 (+2.2%)

$86,844 + $119,201

$206,045

2013

$17,324 (+11.8%)

$86,844 + $119,201

$206,045

2012

$15,500 (+0.9%)

$86,844 + $119,201

$206,045

2011

$15,364 (−10.3%)

$64,635 + $120,391

$185,026

2010

$17,122 (+7.1%)

$64,635 + $120,391

$185,026

2009

$15,987

$76,420 + $135,420

$211,840

Tax history for 1040 Mapleton Ave

Year

Property tax

Land + Additions

Assessment*

2025

$39,375 (+1.6%)

$261,188 + $151,763

$412,951

2024

$38,750 (+1.8%)

$261,188 + $151,763

$412,951

2023

$38,078 (+12.8%)

$272,563 + $168,364

$440,927

2022

$33,751 (+4.9%)

$276,248 + $168,364

$444,612

2021

$32,184 (−4.0%)

$195,802 + $167,641

$363,443

2020

$33,527 (+1.6%)

$201,437 + $172,465

$373,902

2019

$33,014 (+7.9%)

$225,783 + $159,388

$385,171

2018

$30,588 (+3.2%)

$225,783 + $159,388

$385,171

2017

$29,631 (+22.2%)

$225,072 + $127,728

$352,800

2016

$24,254 (+5.6%)

$225,072 + $127,728

$352,800

2015

$22,967 (+29.7%)

$177,747 + $102,445

$280,192

2014

$17,714 (+2.2%)

$86,844 + $119,201

$206,045

2013

$17,324 (+11.8%)

$86,844 + $119,201

$206,045

2012

$15,500 (+0.9%)

$86,844 + $119,201

$206,045

2011

$15,364 (−10.3%)

$64,635 + $120,391

$185,026

2010

$17,122 (+7.1%)

$64,635 + $120,391

$185,026

2009

$15,987

$76,420 + $135,420

$211,840

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

Zoning and permits

Zoning
Permits

RL-1

Residential-Low 1 District

Primarily single-family detached dwelling units with some duplexes and attached dwelling units at low to very low residential densities.

Permitted uses

Include but are not limited to:

Religious facility
Housing-Multiple units
Educational/school
Recreation
Agriculture-Cropland
Park & open space

Property details

Interior

Basement Information
Basement Sq. Ft: 1,611
Basement Type: Unfinished

Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1

Heating & Cooling
Heating Type: Hot Water

Room Information
# of Rooms: 8

Exterior

Exterior Information
Physical Condition: Excellent
Construction Type: Masonry
Building Construction Quality: Excellent
Exterior Wall: Frame Wood
Roof Covering Type: Clay Tile
Roof Shape Type: Clay Tile
Building Type: Single Family

Property Information
Subdivision Name: BOULDER O T EAST & WEST & NORTH
Living Sq. Ft: 5,146
Ground Floor Sq. Ft: 2,349
Building Sq. Ft: 6,757
Stories Type: 2 Plus
Legal Description: PT N & E OF DITCH & PT N & W OF DITCH OUTLOT 9 SQUIRES TO BOULDER O T WEST BLK 151 & TR 827 30-1N-70

Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 825
Garage / Carport Type: Detached

Lot Information
# of Buildings: 1
Land Sq. Ft: 35,281
Legal Lot Number: 9
Legal Block Number: 151
Municipality Name: BOULDER
Acres: 0.8099
County Use Description: 1 FAMILY RESID

Financial

Assessor Information
Assessment Year: 2025
Tax Area: RE2-BLDR-NCWD-UDFC

Public facts

Beds: 4
Baths: 2.5
Sq. Ft.: 5,146
Stories: —
Lot Size: 0.81 acres
Style: Single Family Residential
Year Built: 1905
Year Renovated: 1980
County: Boulder County
APN: R0006500

Home facts updated by county records on Sep 2, 2026

Around this home

Schools

Whittier Elementary School

Public K-5 • Assigned • 0.7mi

6/10

Casey Middle School

Public 6-8 • Assigned • 0.2mi

5/10

Boulder High School

Public 9-12 • Assigned • 0.6mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

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

$4.29M – $5.19M

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Home values near 1040 Mapleton Ave

Data from public records.

Address	Redfin Estimate
1014 Mapleton Ave, Boulder, CO 5 Beds \| 4.5 Baths \| 5358 Sq. Ft.	$6,299,530
1013 Mapleton Ave, Boulder, CO 4 Beds \| 3 Baths \| 2463 Sq. Ft.	$3,177,107

Address	Redfin Estimate
1063 Mapleton Ave, Boulder, CO 4 Beds \| 3.5 Baths \| 3107 Sq. Ft.	$2,096,136
1020 Mapleton Ave, Boulder, CO 4 Beds \| 2 Baths \| 5600 Sq. Ft.	$3,772,858

Address	Redfin Estimate
1043 Mapleton Ave, Boulder, CO 2 Beds \| 1.5 Baths \| 1235 Sq. Ft.	$1,411,078
1025 Mapleton Ave, Boulder, CO 3 Beds \| 3 Baths \| 2150 Sq. Ft.	$2,387,645

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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 1040 Mapleton Ave

Tax history for 1040 Mapleton Ave

Zoning and permits

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 80304

Home values near 1040 Mapleton Ave

More real estate resources