OFF MARKET

Off Market Jan 2023 for $1.7M

$1,763,162

Est. refi paymentEst. refi $11,630/mo

•

1,928

sq ft

520 Mapleton Ave, Boulder, CO 80304

About this home

Public Remarks: Location Incredible! Adorable Mapleton hill bungalow with 4 bdrms, 2 baths. Upper level primary bedroom suite has full bath plus loft space for art, office, and/or just relaxing. Natural light flows throughout, Wood floors, foyer entry. Manageable yard with single garage. clos to downtown. Properties like this don't come along often. No SPD, as-is, current owners have not occupied. Sellers will be participating in a 1031exchange. New price before it's gone - don't miss it!

Single-familyProperty Type

1958Year Built

7,121 sq ftLot Size

$915Est. Price/Sq.Ft.

1 car garageParking

Listed by Patty Young • Property Resources, Inc.

Contact: 3034427368

Bought with Lucy Conklin • Compass - Boulder

•303-487-5472 (broker)

Redfin checked: 2 minutes ago

•Source:IRES as Distributed by MLS Grid #973503

Redfin Estimate

$1,763,162

$38K since sold in January 2023$131K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 24.3% higher than the average sale price ($1.42M) of 6 comparable homes.

SOLD SEP 9, 2026
$1,080,000
A
3 beds2 baths1,549 sq ft
3011 13th St, Boulder, CO 80304
SOLD SEP 1, 2026
$1,350,000
B
4 beds2 baths1,974 sq ft
3190 8th St, Boulder, CO 80304
SOLD FEB 20, 2026
$1,411,000
C
4 beds2 baths1,897 sq ft
1625 4th St, Boulder, CO 80302
SOLD APR 14, 2026
$1,250,000
D
4 beds2.5 baths1,936 sq ft
1805 Forest Ave, Boulder, CO 80304
SOLD JUN 5, 2026
$1,835,000
E
4 beds3 baths2,558 sq ft
675 Dellwood Ave, Boulder, CO 80304
SOLD JUN 11, 2026
$1,583,000
F
3 beds2 baths2,080 sq ft
300 Forest Ave, Boulder, CO 80304

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Earn from this home

Sell

$375,872

Est. take-home

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Refinance

Est. cash available

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Rent

$4,754/mo

Redfin rental estimate

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Market trends in 80302, CO

Last updated August 2026

Buyer's Market

Seller's Market

Buyer's market

Sale-to-List Price

95.3%

0.4% MoM

Median sale price

$1.1M

$64K MoM

Avg. days on market

64d

4 days MoM

Recently sold homes

4 MoM

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See all

Provided by Redfin

Sale history for 520 Mapleton Ave

Year

Property tax

Land + Additions

Assessment*

2025

$10,162 (−5.2%)

$76,481 + $30,094

$106,575

2024

$10,720 (+1.8%)

$76,481 + $30,094

$106,575

2023

$10,534 (−5.9%)

$106,329 + $15,645

$121,974

2022

$11,193 (+4.8%)

$106,329 + $19,330

$125,659

2021

$10,677 (+10.2%)

$80,245 + $39,483

$119,728

2020

$9,685 (+1.6%)

$82,554 + $40,619

$123,173

2019

$9,537 (+10.0%)

$76,434 + $34,835

$111,269

2018

$8,673 (+3.2%)

$76,434 + $34,835

$111,269

2017

$8,401 (+7.2%)

$69,192 + $30,838

$100,030

2016

$7,835 (+5.6%)

$69,192 + $30,838

$100,030

2015

$7,420 (+22.5%)

$60,655 + $29,866

$90,521

2014

$6,056 (+2.2%)

$25,392 + $45,054

$70,446

2013

$5,923 (−8.7%)

$25,392 + $45,054

$70,446

2012

$6,488 (+0.9%)

$25,392 + $45,054

$70,446

2011

$6,431 (+12.5%)

$30,805 + $46,646

$77,451

2010

$5,719 (+7.1%)

$30,805 + $46,646

$77,451

2009

$5,340

$47,760 + $23,000

$70,760

Tax history for 520 Mapleton Ave

Year

Property tax

Land + Additions

Assessment*

2025

$10,162 (−5.2%)

$76,481 + $30,094

$106,575

2024

$10,720 (+1.8%)

$76,481 + $30,094

$106,575

2023

$10,534 (−5.9%)

$106,329 + $15,645

$121,974

2022

$11,193 (+4.8%)

$106,329 + $19,330

$125,659

2021

$10,677 (+10.2%)

$80,245 + $39,483

$119,728

2020

$9,685 (+1.6%)

$82,554 + $40,619

$123,173

2019

$9,537 (+10.0%)

$76,434 + $34,835

$111,269

2018

$8,673 (+3.2%)

$76,434 + $34,835

$111,269

2017

$8,401 (+7.2%)

$69,192 + $30,838

$100,030

2016

$7,835 (+5.6%)

$69,192 + $30,838

$100,030

2015

$7,420 (+22.5%)

$60,655 + $29,866

$90,521

2014

$6,056 (+2.2%)

$25,392 + $45,054

$70,446

2013

$5,923 (−8.7%)

$25,392 + $45,054

$70,446

2012

$6,488 (+0.9%)

$25,392 + $45,054

$70,446

2011

$6,431 (+12.5%)

$30,805 + $46,646

$77,451

2010

$5,719 (+7.1%)

$30,805 + $46,646

$77,451

2009

$5,340

$47,760 + $23,000

$70,760

*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

7,121 Sq. Ft.

Year renovated

1985

Sq. Ft.

1,928

Year built

1958

Style

Single Family Residential

County

Boulder County

APN

R0000606

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 2, 2026.

Property details

Parking

Parking Features
Covered Spaces: 1
Garage: Yes
Garage Spaces: 1
Parking Features: Alley Access

Interior

Bathroom Information
Bathrooms (Full): 2
Bathrooms (Half): 0
Bathrooms (Three Quarter): 0

Bedroom Information
Bedrooms Total: 4

Heating & Cooling
Heating: Yes
Forced Air

Interior Features
Gas Range/Oven, Self Cleaning Oven, Dishwasher, Refrigerator, Washer, Dryer
Fireplace: Yes
Fireplace Features: Living Room, Single Fireplace
Flooring: Wood Floors
Study Area, High Speed Internet, Open Floorplan, Stain/Natural Trim, Loft, Beamed Ceilings
Laundry Features: Main Level

Room Information
Basement: Radon Unknown

Exterior

Exterior Features
Lighting
Fencing: Partial
Roof: Composition

Land Information
Road Surface Type: Paved, Asphalt

Lot Information
Horse(s): No
Lot Features: Curbs, Gutters, Sidewalks, Lawn Sprinkler System, Historic District
Road Frontage Type: City Street
Zoning: Res

Property Information
Property Type: Residential
Waterfront: No

Subdivision Information
Subdivision Name: Mapleton
MLS Area Major: Boulder

Building Information
Above Grade Finished Area: 1928
Below Grade Finished Area: 0
Building Area Total: 1928
Construction Materials: Wood/Frame, Brick/Brick Veneer

Financial

Tax Information
Parcel Number: R0000606
Tax Annual Amount: 10677
Tax Year: 2021

Financial Information
Listing Terms: Cash, Conventional

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

School Information
High School District: Boulder Valley Dist RE2
Elementary School: Whittier
Middle or Junior School: Casey
High School: Boulder

Location Information
Directions: North side of Mapleton, west of 9th Street
Unparsed Address: 520 Mapleton Ave Boulder CO 80304
Street Number: 520
Street Name: Mapleton
Street Suffix: Ave
City: Boulder
State or Province: CO
County or Parish: Boulder
Country: US
Postal Code: 80304
Coordinates: -105.2894,40.02018
Latitude: 40.02018
Longitude: -105.2894

Public facts

Beds: 4
Baths: 2.0
Sq. Ft.: 1,928
Stories: —
Lot Size: 7,121 square feet
Style: Single Family Residential
Year Built: 1958
Year Renovated: 1985
County: Boulder County
APN: R0000606

Home facts updated by county records on Sep 2, 2026

Other

Miscellaneous Information
Exclusions: Staging supplies and furnishings

Listing Information
Attribution Contact: 3034427368
Close Price: $1,725,000
Photos Count: 28
Possible Use: Single Family
Special Listing Conditions: Private Owner
Standard Status: Closed

Listing Date Information
Close Date: Friday, January 13, 2023
Cumulative Days on Market: 116
Days on Market: 116
Listing Contract Date: Wednesday, August 17, 2022
Modification Timestamp: Friday, August 2, 2024 1:54 AM

Home Information
Levels: Bi-Level
Window Features: Window Coverings
Year Built: 1958

Around this home

Schools

Whittier Elementary School

Public K-5 • Assigned • 1.1mi

6/10

Casey Middle School

Public 6-8 • Assigned • 0.6mi

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)

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

$1.68M – $2.03M

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Home values near 520 Mapleton Ave

Data from public records.

Address	Redfin Estimate
502 Mapleton Ave, Boulder, CO 5 Beds \| 4 Baths \| 4508 Sq. Ft.	$3,266,913
501 Mapleton Ave, Boulder, CO 5 Beds \| 5 Baths \| 4832 Sq. Ft.	$3,044,684

Address	Redfin Estimate
515 Mapleton Ave, Boulder, CO 2 Beds \| 1 Baths \| 1377 Sq. Ft.	$1,354,528
456 Mapleton Ave, Boulder, CO 5 Beds \| 3.5 Baths \| 3683 Sq. Ft.	$2,397,064

Address	Redfin Estimate
525 Mapleton Ave, Boulder, CO 2 Beds \| 2 Baths \| 2240 Sq. Ft.	$1,822,622
535 Mapleton Ave, Boulder, CO 6 Beds \| 4 Baths \| 5158 Sq. Ft.	$3,236,697

Property information provided by IRES as Distributed by MLS Grid when last listed in 2022. 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 80302, CO

Sale history for 520 Mapleton Ave

Tax history for 520 Mapleton Ave

Public record

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 520 Mapleton Ave

More real estate resources