Google street view image for 525 Mapleton Ave, Boulder, CO 80304

Off market nov 1967 for $31K

$1,892,623

Est. refi paymentEst. refi $217/mo

•

2 ba

•

2,240

sq ft

525 Mapleton Ave, Boulder, CO 80304

About this home

525 Mapleton Ave is a 2,240 square foot house on a 8,383 square foot lot with 2 bedrooms and 2 bathrooms. - it last sold on November 08, 1967 for $31,500. Based on Redfin's Boulder data, we estimate the home's value is $1,892,623.

Single-familyProperty Type

1903Year Built

8,383 sq ftLot Size

$845Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,892,623

$1.9M since sold in November 1967$30K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 20.2% higher than the average sale price ($1.57M) 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
Listing provided by metrolistCO
SOLD AUG 14, 2026
990 Grandview Ave, Boulder, CO 80302
$1,100,000
B
2 beds2 baths2,955 sq ft
990 Grandview Ave, Boulder, CO 80302
SOLD SEP 28, 2026
$1,775,000
C
2 beds2 baths1,371 sq ft
946 Portland Pl, Boulder, CO 80304
Listing provided by metrolistCO
SOLD AUG 5, 2026
$2,215,000
D
3 beds2 baths2,104 sq ft
3133 5th St, Boulder, CO 80304
SOLD SEP 9, 2026
$1,080,000
E
3 beds2 baths1,549 sq ft
3011 13th St, Boulder, CO 80304
SOLD SEP 29, 2026
$1,825,000
F
4 beds2.5 baths2,161 sq ft
2850 6th St, Boulder, CO 80304

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Sell

$1,781,902

Est. take-home

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Est. cash available

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Rent

$4,132/mo

Redfin rental estimate

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Market trends in 80304, CO

Last updated October 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-list price

98.0%

+0.6% MoM

Median sale price

$1.3M

$39K MoM

Avg. days on market

66d

3 days MoM

Recently sold homes

100

1 MoM

New listings for sale

NEW 23 HRS AGO
$240,000
1 bed1 bath400 sq ft
2711 Mapleton Ave #5, Boulder, CO 80304
$799,000
3 beds2 baths1,130 sq ft
4145 Riverside Ave, Boulder, CO 80304
3D WALKTHROUGH
$650,000
2 beds1 bath1,214 sq ft
2950 Broadway St #1, Boulder, CO 80304
3D WALKTHROUGH
$570,000
2 beds1 bath942 sq ft
1299 Yellow Pine Ave, Boulder, CO 80304
Carolyn Dooling • Compass - Denver
OPEN TODAY, 11AM TO 1PM
$1,995,000
5 beds4.5 baths4,223 sq ft
1840 Hawthorn Ave, Boulder, CO 80304
$300,000
1 bed1 bath400 sq ft
2711 Mapleton Ave #1, Boulder, CO 80304
Lydia Moy • WK Real Estate
3D & VIDEO TOUR
$1,050,000
2 beds1 bath1,474 sq ft
3115 Broadway St, Boulder, CO 80304
$1,175,000
3 beds4.5 baths2,992 sq ft
555 Laramie Blvd, Boulder, CO 80304
3D WALKTHROUGH
$1,450,000
4 beds2.5 baths2,554 sq ft
1780 Redwood Ave, Boulder, CO 80304
$985,000
4 beds2 baths1,812 sq ft
2445 Forest Ave, Boulder, CO 80304
See all

Provided by Redfin

Sale history for 525 Mapleton Ave

Year

Property tax

Land + Additions

Assessment*

2025

$14,577 (+2.2%)

$112,544 + $46,581

$159,125

2024

$14,258 (+1.8%)

$112,544 + $46,581

$159,125

2023

$14,011 (+9.4%)

$115,790 + $53,151

$168,941

2022

$12,805 (+4.9%)

$119,474 + $53,151

$172,625

2021

$12,210 (+3.9%)

$87,063 + $57,775

$144,838

2020

$11,752 (+1.6%)

$89,568 + $59,438

$149,006

2019

$11,572 (+15.9%)

$82,940 + $59,223

$142,163

2018

$9,988 (+3.2%)

$82,940 + $59,223

$142,163

2017

$9,675 (−4.5%)

$75,024 + $47,376

$122,400

2016

$10,129 (−6.2%)

$75,024 + $47,376

$122,400

2015

$10,796 (+59.4%)

$65,750 + $59,222

$124,972

2014

$6,771 (+2.2%)

$31,283 + $55,441

$86,724

2013

$6,623 (−5.2%)

$31,283 + $55,441

$86,724

2012

$6,988 (−7.9%)

$31,283 + $55,441

$86,724

2011

$7,588 (+10.5%)

$33,352 + $58,028

$91,380

2010

$6,868 (+7.1%)

$33,352 + $58,028

$91,380

2009

$6,413

$47,760 + $37,210

$84,970

Tax history for 525 Mapleton Ave

Year

Property tax

Land + Additions

Assessment*

2025

$14,577 (+2.2%)

$112,544 + $46,581

$159,125

2024

$14,258 (+1.8%)

$112,544 + $46,581

$159,125

2023

$14,011 (+9.4%)

$115,790 + $53,151

$168,941

2022

$12,805 (+4.9%)

$119,474 + $53,151

$172,625

2021

$12,210 (+3.9%)

$87,063 + $57,775

$144,838

2020

$11,752 (+1.6%)

$89,568 + $59,438

$149,006

2019

$11,572 (+15.9%)

$82,940 + $59,223

$142,163

2018

$9,988 (+3.2%)

$82,940 + $59,223

$142,163

2017

$9,675 (−4.5%)

$75,024 + $47,376

$122,400

2016

$10,129 (−6.2%)

$75,024 + $47,376

$122,400

2015

$10,796 (+59.4%)

$65,750 + $59,222

$124,972

2014

$6,771 (+2.2%)

$31,283 + $55,441

$86,724

2013

$6,623 (−5.2%)

$31,283 + $55,441

$86,724

2012

$6,988 (−7.9%)

$31,283 + $55,441

$86,724

2011

$7,588 (+10.5%)

$33,352 + $58,028

$91,380

2010

$6,868 (+7.1%)

$33,352 + $58,028

$91,380

2009

$6,413

$47,760 + $37,210

$84,970

*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: 630
Basement Type: Unfinished

Bathroom Information
# of Full Baths: 1
# of 3/4 Baths: 1

Heating & Cooling
Heating Type: Forced Air

Room Information
# of Rooms: 4

Exterior

Exterior Information
Physical Condition: Very Good
Construction Type: Masonry
Building Construction Quality: Good
Exterior Wall: Block/Brick
Roof Covering Type: Asphalt
Roof Shape Type: Asphalt
Building Type: Single Family

Property Information
Subdivision Name: MAPLETON
Living Sq. Ft: 2,240
Ground Floor Sq. Ft: 1,120
Building Sq. Ft: 2,870
Stories Type: 2 Plus
Legal Description: LOTS 52-53 BLK 4 MAPLETON

Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 270
Garage / Carport Type: Detached

Lot Information
# of Buildings: 1
Land Sq. Ft: 8,383
Legal Lot Number: 52
Legal Block Number: 4
Municipality Name: BOULDER
Acres: 0.1924
County Use Description: 1 FAMILY RESID

Financial

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

Public facts

Beds: 2
Baths: 2.0
Sq. Ft.: 2,240
Stories: —
Lot Size: 8,383 square feet
Style: Single Family Residential
Year Built: 1903
Year Renovated: 1965
County: Boulder County
APN: R0002087

Home facts updated by county records on Sep 2, 2026

Around this home

Schools

K - 12
Preschool & daycare

Whittier Elementary School

Public K-5 • Assigned • 1.1mi

6/10

Casey Middle School

Public 6-8 • Assigned • 0.5mi

5/10

Boulder High School

Public 9-12 • Assigned • 0.9mi

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)

44°

22°

51°

29°

63°

40°

64°

40°

70°

47°

83°

57°

90°

64°

84°

60°

76°

53°

65°

43°

54°

33°

53°

33°

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

$1.80M – $2.18M

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New listings for sale in 80304

NEW 23 HRS AGO

$240,000

1 bed1 bath400 sq ft

2711 Mapleton Ave #5, Boulder, CO 80304

Quiet lane • Mature trees • Disabled ramp access

$799,000

3 beds2 baths1,130 sq ft

4145 Riverside Ave, Boulder, CO 80304

Foothills view • Custom closet • Custom murphy bed

3D WALKTHROUGH

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3D WALKTHROUGH

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Private balcony • Butcherblock island • Granite counters

Listing provided by REColorado as Distributed by MLS Grid

OPEN TODAY, 11AM TO 1PMVIDEO TOUR

$1,995,000

5 beds4.5 baths4,223 sq ft

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Vaulted ceilings • Private yards • En-suite bath

$300,000

1 bed1 bath400 sq ft

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Modern appliances • Designated parking • Common laundry

Listing provided by REColorado as Distributed by MLS Grid

3D & VIDEO TOUR

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2 beds1 bath1,474 sq ft

3115 Broadway St, Boulder, CO 80304

Goat trail • North boulder park • Mature greenery

$1,175,000

3 beds4.5 baths2,992 sq ft

555 Laramie Blvd, Boulder, CO 80304

End-unit townhome • Corner lot • Brick facade

3D WALKTHROUGH

$1,450,000

4 beds2.5 baths2,554 sq ft

1780 Redwood Ave, Boulder, CO 80304

Designer kitchen • Inviting living room • Mature trees

Home values near 525 Mapleton Ave

Data from public records.

Address	Redfin Estimate
520 Mapleton Avenue, Boulder, CO 4 Beds \| 2 Baths \| 1928 Sq. Ft.	$1,737,322
501 Mapleton Avenue, Boulder, CO 5 Beds \| 5 Baths \| 4832 Sq. Ft.	$3,112,995
516 Mapleton Avenue, Boulder, CO 3 Beds \| 2.5 Baths \| 2872 Sq. Ft.	$2,542,663
550 Mapleton Avenue, Boulder, CO 5 Beds \| - Baths \| 5801 Sq. Ft.	$4,699,980
520 Maxwell Avenue, Boulder, CO 3 Beds \| 2 Baths \| 1686 Sq. Ft.	$1,989,535
516 Maxwell Avenue, Boulder, CO 4 Beds \| 4.5 Baths \| 3633 Sq. Ft.	—
540 Maxwell Avenue, Boulder, CO 2 Beds \| 1 Baths \| 836 Sq. Ft.	$924,219

Address	Redfin Estimate
502 Mapleton Avenue, Boulder, CO 5 Beds \| 4 Baths \| 4508 Sq. Ft.	$3,095,086
456 Mapleton Avenue, Boulder, CO 5 Beds \| 3.5 Baths \| 3683 Sq. Ft.	$2,333,092
545 Mapleton Avenue, Boulder, CO 3 Beds \| 3 Baths \| 2940 Sq. Ft.	$2,668,701
607 Mapleton Avenue, Boulder, CO 4 Beds \| 2.5 Baths \| 3202 Sq. Ft.	$2,697,584
2424 5th Street, Boulder, CO 3 Beds \| 3 Baths \| 2965 Sq. Ft.	$1,950,621
2415 5th Street, Boulder, CO 2 Beds \| 1.5 Baths \| 1795 Sq. Ft.	$1,698,509
510 Maxwell Avenue, Boulder, CO 4 Beds \| 3 Baths \| 3143 Sq. Ft.	$2,163,537

Address	Redfin Estimate
515 Mapleton Avenue, Boulder, CO 2 Beds \| 1 Baths \| 1377 Sq. Ft.	$1,327,984
535 Mapleton Avenue, Boulder, CO 6 Beds \| 4 Baths \| 5158 Sq. Ft.	$3,175,283
555 Mapleton Avenue #B, Boulder, CO 3 Beds \| 4 Baths \| 3900 Sq. Ft.	$3,054,580
534 Mapleton Avenue, Boulder, CO 4 Beds \| 2.5 Baths \| 3063 Sq. Ft.	$2,866,724
2409 5th Street, Boulder, CO 4 Beds \| 4.5 Baths \| 4343 Sq. Ft.	$2,908,518
530 Maxwell Avenue, Boulder, CO 3 Beds \| 3 Baths \| 2751 Sq. Ft.	$1,709,749
2433 5th Street, Boulder, CO 3 Beds \| 2 Baths \| 1874 Sq. Ft.	$1,847,552

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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 525 Mapleton Ave

Tax history for 525 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 525 Mapleton Ave

More real estate resources