Google street view image for 904 Mapleton Ave, Boulder, CO 80304

Off market

$1,993,512

•

1.5 ba

•

2,634

sq ft

904 Mapleton Ave, Boulder, CO 80304

About this home

904 Mapleton Ave is a 2,634 square foot house on a 8,794 square foot lot with 3 bedrooms and 1.5 bathrooms. Based on Redfin's Boulder data, we estimate the home's value is $1,993,512.

Single-familyProperty Type

1900Year Built

8,794 sq ftLot Size

$757Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,993,512

$165K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 5% higher than the average sale price ($1.90M) of 6 comparable homes.

SOLD BY REDFIN JUN 30, 2026
$1,450,000
A
3 beds2 baths1,620 sq ft
826 Maxwell Ave, Boulder, CO 80304
Redfin Corporation
SOLD AUG 27, 2026
$3,295,000
B
4 beds3 baths2,463 sq ft
1013 Mapleton Ave, Boulder, CO 80304
SOLD AUG 14, 2026
990 Grandview Ave, Boulder, CO 80302
$1,100,000
C
2 beds2 baths2,955 sq ft
990 Grandview Ave, Boulder, CO 80302
SOLD SEP 28, 2026
$1,775,000
D
2 beds2 baths1,371 sq ft
946 Portland Pl, Boulder, CO 80304
Real Realty Colorado LLC
SOLD JUN 12, 2026
$1,544,000
E
4 beds3 baths2,484 sq ft
1020 Portland Pl, Boulder, CO 80304
SOLD MAR 23, 2026
$2,225,000
F
3 beds3 baths2,940 sq ft
545 Mapleton Ave, Boulder, CO 80304

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Earn from this home

Sell

$1,877,000

Est. take-home

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Rent

$4,224/mo

Redfin rental estimate

List your home for rent

Market trends in 80304, CO

Last updated September 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

NEW 23 MINS AGO
$390,000
2 beds1 bath910 sq ft
1895 Alpine Ave Unit E9, Boulder, CO 80304
OPEN SUN, 1PM TO 3PM
$635,000
3 beds1.5 baths1,488 sq ft
3874 Broadway St #9, Boulder, CO 80304
VIDEO TOUR
$2,499,000
6 beds4 baths4,684 sq ft
3735 Wild Plum Ct, Boulder, CO 80304
$152,000
3 beds2 baths992 sq ft
4500 19th St #33, Boulder, CO 80304
Mary Gutierrez • Mary Rose Gutierrez-Individual Proprietor
OPEN SAT, 11AM TO 1PM
$1,350,000
4 beds3.5 baths2,862 sq ft
5247 5th St, Boulder, CO 80304
3D WALKTHROUGH
$2,150,000
6 beds3 baths4,254 sq ft
3555 16th St, Boulder, CO 80304
$1,850,000
4 beds1 bath1,324 sq ft
541 Maxwell Ave, Boulder, CO 80304
$315,000
1 bed1 bath592 sq ft
3745 Birchwood Dr #34, Boulder, CO 80304
$1,249,000
3 beds4 baths2,848 sq ft
419 Wild Horse Cir, Boulder, CO 80304
Gregory Pickett • Compass - Denver
3D WALKTHROUGH
$1,399,000
4 beds3 baths2,818 sq ft
3845 Birchwood Dr, Boulder, CO 80304
See all

Provided by Redfin

Sale history for 904 Mapleton Ave

As the MLS and public records start to fill up, we'll list the details here.

Year

Property tax

Land + Additions

Assessment*

2025

$13,170 (+1.1%)

$119,569 + $24,806

$144,375

2024

$13,030 (+1.8%)

$119,569 + $24,806

$144,375

2023

$12,803 (+11.6%)

$118,376 + $36,582

$154,958

2022

$11,468 (+4.9%)

$122,061 + $36,582

$158,643

2021

$10,935 (+13.6%)

$90,058 + $40,380

$130,438

2020

$9,629 (+1.6%)

$92,650 + $41,542

$134,192

2019

$9,481 (+10.0%)

$85,157 + $32,611

$117,768

2018

$8,616 (+3.2%)

$85,157 + $32,611

$117,768

2017

$8,347 (+14.0%)

$75,672 + $30,910

$106,582

2016

$7,322 (+5.6%)

$75,672 + $30,910

$106,582

2015

$6,934 (+17.1%)

$67,978 + $24,573

$92,551

2014

$5,919 (+2.2%)

$27,860 + $40,994

$68,854

2013

$5,789 (−1.0%)

$27,860 + $40,994

$68,854

2012

$5,848 (+0.9%)

$27,860 + $40,994

$68,854

2011

$5,797 (−11.2%)

$28,019 + $41,790

$69,809

2010

$6,531 (−4.6%)

$28,019 + $41,790

$69,809

2009

$6,849

$56,120 + $34,630

$90,750

Tax history for 904 Mapleton Ave

Year

Property tax

Land + Additions

Assessment*

2025

$13,170 (+1.1%)

$119,569 + $24,806

$144,375

2024

$13,030 (+1.8%)

$119,569 + $24,806

$144,375

2023

$12,803 (+11.6%)

$118,376 + $36,582

$154,958

2022

$11,468 (+4.9%)

$122,061 + $36,582

$158,643

2021

$10,935 (+13.6%)

$90,058 + $40,380

$130,438

2020

$9,629 (+1.6%)

$92,650 + $41,542

$134,192

2019

$9,481 (+10.0%)

$85,157 + $32,611

$117,768

2018

$8,616 (+3.2%)

$85,157 + $32,611

$117,768

2017

$8,347 (+14.0%)

$75,672 + $30,910

$106,582

2016

$7,322 (+5.6%)

$75,672 + $30,910

$106,582

2015

$6,934 (+17.1%)

$67,978 + $24,573

$92,551

2014

$5,919 (+2.2%)

$27,860 + $40,994

$68,854

2013

$5,789 (−1.0%)

$27,860 + $40,994

$68,854

2012

$5,848 (+0.9%)

$27,860 + $40,994

$68,854

2011

$5,797 (−11.2%)

$28,019 + $41,790

$69,809

2010

$6,531 (−4.6%)

$28,019 + $41,790

$69,809

2009

$6,849

$56,120 + $34,630

$90,750

*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: 314
Basement Finish: Finished
Basement Type: Finished

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

Heating & Cooling
Heating Type: Hot Water

Room Information
# of Rooms: 10

Exterior

Exterior Information
Physical Condition: Good
Construction Type: Masonry
Building Construction Quality: Good
Exterior Wall: Stone
Roof Covering Type: Asphalt
Roof Shape Type: Asphalt
Building Type: Single Family

Property Information
Subdivision Name: BOULDER O T EAST & WEST & NORTH
Living Sq. Ft: 2,634
Ground Floor Sq. Ft: 1,372
Building Sq. Ft: 2,634
Stories Type: 2 Plus
Legal Description: LOT 10 BLK 151 SQUIRES TO BOULDER O T WEST

Lot Information
# of Buildings: 1
Land Sq. Ft: 8,794
Legal Lot Number: 10
Legal Block Number: 151
Municipality Name: BOULDER
Acres: 0.2019
County Use Description: 1 FAMILY RESID

Financial

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

Public facts

Beds: 3
Baths: 1.5
Sq. Ft.: 2,634
Stories: —
Lot Size: 8,794 square feet
Style: Single Family Residential
Year Built: 1900
Year Renovated: 1970
County: Boulder County
APN: R0007198

Home facts updated by county records on Sep 2, 2026

Around this home

Schools

Whittier Elementary School

Public K-5 • Assigned • 0.8mi

6/10

Casey Middle School

Public 6-8 • Assigned • 0.3mi

5/10

Boulder High School

Public 9-12 • Assigned • 0.7mi

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, 18 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

$1.89M – $2.29M

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New listings for sale in 80304

NEW 23 MINS AGO

$390,000

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1895 Alpine Ave Unit E9, Boulder, CO 80304

OPEN SUN, 1PM TO 3PM3D WALKTHROUGH

$635,000

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3874 Broadway St #9, Boulder, CO 80304

VIDEO TOUR

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$152,000

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4500 19th St #33, Boulder, CO 80304

Mary Gutierrez • Mary Rose Gutierrez-Individual Proprietor

OPEN SAT, 11AM TO 1PM3D & VIDEO TOUR

$1,350,000

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3D WALKTHROUGH

$2,150,000

6 beds3 baths4,254 sq ft

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Home values near 904 Mapleton Ave

Data from public records.

Address	Redfin Estimate
1014 Mapleton Ave, Boulder, CO 5 Beds \| 4.5 Baths \| 5358 Sq. Ft.	$6,506,036
811 Mapleton Ave, Boulder, CO 5 Beds \| 4.5 Baths \| 4997 Sq. Ft.	$4,047,481

Address	Redfin Estimate
839 Mapleton Ave, Boulder, CO 2 Beds \| 1.5 Baths \| 2408 Sq. Ft.	$1,955,097
936 Mapleton Ave, Boulder, CO 4 Beds \| 2 Baths \| 2626 Sq. Ft.	$3,282,316

Address	Redfin Estimate
909 Mapleton Ave, Boulder, CO 5 Beds \| 4 Baths \| 5118 Sq. Ft.	$3,489,470
1001 Mapleton Ave, Boulder, CO 5 Beds \| 3.5 Baths \| 5849 Sq. Ft.	$4,895,246

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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 904 Mapleton Ave

Tax history for 904 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 904 Mapleton Ave

More real estate resources