Google street view image for 4140 Riverside Ave, Boulder, CO 80304

Off market sep 1990 for $118K

$857,603

Est. refi paymentEst. refi $822/mo

•

2 ba

•

1,461

sq ft

4140 Riverside Ave, Boulder, CO 80304

About this home

4140 Riverside Ave is a 1,461 square foot house on a 3,400 square foot lot with 2 bedrooms and 2 bathrooms. - it last sold on September 05, 1990 for $118,000. Based on Redfin's Boulder data, we estimate the home's value is $857,603.

Single-familyProperty Type

1982Year Built

3,400 sq ftLot Size

$587Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$857,603

$740K since sold in September 1990$4,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 37.3% lower than the average sale price ($1.37M) of 6 comparable homes.

SOLD SEP 25, 2026
$1,265,000
A
3 beds2.5 baths1,993 sq ft
1422 Yaupon Ave, Boulder, CO 80304
SOLD OCT 10, 2025
$1,190,000
B
3 beds2.5 baths1,336 sq ft
758 Cottage Ln, Boulder, CO 80304
SOLD JUL 14, 2026
$1,355,000
C
3 beds2.5 baths1,920 sq ft
3835 Orion Ct, Boulder, CO 80304
SOLD JUN 15, 2026
$1,445,000
D
3 beds3 baths2,072 sq ft
3856 14th St, Boulder, CO 80304
SOLD JUL 15, 2026
$1,295,000
E
3 beds3 baths1,844 sq ft
1305 Linden Ave, Boulder, CO 80304
SOLD JUN 26, 2026
$1,660,000
F
4 beds3 baths3,051 sq ft
3966 Promontory Ct, Boulder, CO 80304

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Earn from this home

Sell

$806,292

Est. take-home

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Est. cash available

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Rent

$3,571/mo

Redfin rental estimate

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Market trends in 80304, CO

Last updated September 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-List Price

97.4%

+0.1% MoM

Median sale price

$1.3M

$110K MoM

Avg. days on market

63d

8 days MoM

Recently sold homes

103

15 MoM

New listings for sale

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OPEN SAT, 11AM TO 1PM
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3025 Broadway St #18, Boulder, CO 80304
OPEN SAT, 11AM TO 2PM
$4,975,000
5 beds5.5 baths4,687 sq ft
661 Maxwell Ave, Boulder, CO 80304
NEW 25 HRS AGO
$165,000
3 beds2 baths1,184 sq ft
4500 19 St #623, Boulder, CO 80304
Diana Keck • Keck Real Estate
COMING SOON
$1,985,000
4 beds4 baths3,358 sq ft
2117 Jordan Pl, Boulder, CO 80304
$850,000
3 beds1.5 baths1,332 sq ft
4065 Dawn Ct, Boulder, CO 80304
$2,250,000
5 beds4 baths3,926 sq ft
3979 Springleaf Ln, Boulder, CO 80304
Janet Leap • RE/MAX of Boulder
FOR SALE BY OWNER
$1,180,000
5 beds4 baths2,944 sq ft
1225 Kalmia Ave, Boulder, CO 80304
$1,750,000
3 beds2 baths1,446 sq ft
653 Dewey Ave, Boulder, CO 80304
OPEN SAT, 11AM TO 1PM
$4,495,000
4 beds3.5 baths5,026 sq ft
3746 Wonderland Hill Ave, Boulder, CO 80304
See all

Provided by Redfin

Sale history for 4140 Riverside Ave

Year

Property tax

Land + Additions

Assessment*

2025

$5,520 (−1.7%)

$31,094 + $33,044

$64,138

2024

$5,615 (+1.8%)

$31,094 + $33,044

$64,138

2023

$5,518 (+17.3%)

$29,306 + $41,285

$70,591

2022

$4,706 (+4.9%)

$32,991 + $41,285

$74,276

2021

$4,487 (+16.8%)

$26,820 + $30,802

$57,622

2020

$3,841 (+1.6%)

$27,592 + $31,689

$59,281

2019

$3,782 (+18.8%)

$24,954 + $26,319

$51,273

2018

$3,184 (−17.1%)

$24,954 + $26,319

$51,273

2017

$3,839 (+11.4%)

$18,288 + $27,425

$45,713

2016

$3,445 (+5.6%)

$18,288 + $27,425

$45,713

2015

$3,262 (+14.3%)

$17,034 + $22,766

$39,800

2014

$2,855 (+2.2%)

$14,965 + $18,244

$33,209

2013

$2,792 (+6.0%)

$14,965 + $18,244

$33,209

2012

$2,634 (+0.9%)

$14,965 + $18,244

$33,209

2011

$2,611 (+1.5%)

$11,940 + $19,502

$31,442

2010

$2,573 (+7.1%)

$11,940 + $21,094

$33,034

2009

$2,403

$18,940 + $12,900

$31,840

Tax history for 4140 Riverside Ave

Year

Property tax

Land + Additions

Assessment*

2025

$5,520 (−1.7%)

$31,094 + $33,044

$64,138

2024

$5,615 (+1.8%)

$31,094 + $33,044

$64,138

2023

$5,518 (+17.3%)

$29,306 + $41,285

$70,591

2022

$4,706 (+4.9%)

$32,991 + $41,285

$74,276

2021

$4,487 (+16.8%)

$26,820 + $30,802

$57,622

2020

$3,841 (+1.6%)

$27,592 + $31,689

$59,281

2019

$3,782 (+18.8%)

$24,954 + $26,319

$51,273

2018

$3,184 (−17.1%)

$24,954 + $26,319

$51,273

2017

$3,839 (+11.4%)

$18,288 + $27,425

$45,713

2016

$3,445 (+5.6%)

$18,288 + $27,425

$45,713

2015

$3,262 (+14.3%)

$17,034 + $22,766

$39,800

2014

$2,855 (+2.2%)

$14,965 + $18,244

$33,209

2013

$2,792 (+6.0%)

$14,965 + $18,244

$33,209

2012

$2,634 (+0.9%)

$14,965 + $18,244

$33,209

2011

$2,611 (+1.5%)

$11,940 + $19,502

$31,442

2010

$2,573 (+7.1%)

$11,940 + $21,094

$33,034

2009

$2,403

$18,940 + $12,900

$31,840

*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-2

Residential-Low 2 District

Medium density residential areas primarily used for small-lot residential development, including without limitation, duplexes, triplexes, or townhouses, where each unit generally has direct access at ground level.

Permitted uses

Include but are not limited to:

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

Property details

Interior

Basement Information
Basement Sq. Ft: 576
Basement Finish: Finished
Basement Type: Finished

Bathroom Information
# of Full Baths: 2

Heating & Cooling
Heating Type: Forced Air

Room Information
# of Rooms: 5

Exterior

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

Property Information
Subdivision Name: WILDWOOD
Living Sq. Ft: 1,461
Ground Floor Sq. Ft: 597
Building Sq. Ft: 1,749
Stories Type: 2 Plus
Legal Description: LOT 19 WILDWOOD

Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 220
Garage / Carport Type: Detached

Lot Information
# of Buildings: 1
Land Sq. Ft: 3,400
Legal Lot Number: 19
Municipality Name: BOULDER
Acres: 0.0781
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.: 1,461
Stories: —
Lot Size: 3,400 square feet
Style: Single Family Residential
Year Built: 1982
Year Renovated: 1982
County: Boulder County
APN: R0087568

Home facts updated by county records on Sep 2, 2026

Around this home

Schools

Crest View Elementary School

Public K-5 • Assigned • 0.4mi

9/10

Centennial Middle School

Public 6-8 • Assigned • 0.7mi

6/10

Boulder High School

Public 9-12 • Assigned • 2.5mi

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

3% chance of being in a wildfire in next 30 years

3/10 Heat Factor

7 days above 92° expected this year, 17 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

$815,000 – $987,000

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Nearby similar homes

OPEN SAT, 11AM TO 1PM3D & VIDEO TOUR

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2975 18th St, Boulder, CO 80304

VIDEO TOUR

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Gregory Pickett • Compass - Denver

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$3,495,000

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1425 Upland Ave, Boulder, CO 80304

Patrick Dolan • RE/MAX of Boulder

OPEN SAT, 11AM TO 1PMVIDEO TOUR

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New listings for sale in 80304

OPEN SAT, 11AM TO 1PM3D & VIDEO TOUR

$1,095,000

3 beds1.5 baths1,897 sq ft

2975 18th St, Boulder, CO 80304

OPEN SAT, 11AM TO 1PM

$425,000

1 bed1 bath469 sq ft

3025 Broadway St #18, Boulder, CO 80304

OPEN SAT, 11AM TO 2PM

$4,975,000

5 beds5.5 baths4,687 sq ft

661 Maxwell Ave, Boulder, CO 80304

NEW 25 HRS AGO

$165,000

3 beds2 baths1,184 sq ft

4500 19 St #623, Boulder, CO 80304

Listing provided by REColorado as Distributed by MLS Grid

COMING SOON

$1,985,000

4 beds4 baths3,358 sq ft

2117 Jordan Pl, Boulder, CO 80304

$850,000

3 beds1.5 baths1,332 sq ft

4065 Dawn Ct, Boulder, CO 80304

$2,250,000

5 beds4 baths3,926 sq ft

3979 Springleaf Ln, Boulder, CO 80304

Listing provided by REColorado as Distributed by MLS Grid

FOR SALE BY OWNER

$1,180,000

5 beds4 baths2,944 sq ft

1225 Kalmia Ave, Boulder, CO 80304

$1,750,000

3 beds2 baths1,446 sq ft

653 Dewey Ave, Boulder, CO 80304

Home values near 4140 Riverside Ave

Data from public records.

Address	Redfin Estimate
4135 Riverside Ave, Boulder, CO 3 Beds \| 2 Baths \| 1644 Sq. Ft.	$794,704
4110 Riverside Ave, Boulder, CO 4 Beds \| 2 Baths \| 2110 Sq. Ft.	$1,072,059

Address	Redfin Estimate
4130 Riverside Ave, Boulder, CO 4 Beds \| 2 Baths \| 2448 Sq. Ft.	$1,138,873
4106 Riverside Ave, Boulder, CO 3 Beds \| 2 Baths \| 2050 Sq. Ft.	$948,561

Address	Redfin Estimate
4120 Riverside Ave, Boulder, CO 2 Beds \| 3 Baths \| 1969 Sq. Ft.	$1,176,633
4170 Riverside Ave, Boulder, CO 2 Beds \| 2 Baths \| 1152 Sq. Ft.	$874,530

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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 4140 Riverside Ave

Tax history for 4140 Riverside 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 4140 Riverside Ave

More real estate resources