Google street view image for 623 Athens St, Altadena, CA 91001

Off market jan 1990 for $170K

$831,792

Est. refi paymentEst. refi $1,271/mo

•

2 ba

•

1,488

sq ft

623 Athens St, Altadena, CA 91001

About this home

623 Athens St is a 1,488 square foot house on a 9,012 square foot lot with 3 bedrooms and 2 bathrooms. - it last sold on January 18, 1990 for $170,000. Based on Redfin's Altadena data, we estimate the home's value is $831,792.

Single-familyProperty Type

1939Year Built

9,012 sq ftLot Size

$559Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$831,792

$662K since sold in January 1990$42K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 42.4% higher than the average sale price ($584K) of 5 comparable homes.

SOLD SEP 8, 2026
$660,000
A
Land— sq ft
411 E Marigold St, Altadena, CA 91001
SOLD SEP 28, 2026
$560,000
B
Land— sq ft
3154 Alaca Dr, Altadena, CA 91001
SOLD SEP 11, 2026
$600,000
C
Land— sq ft
102 W Poppyfields Dr, Altadena, CA 91001
Compass
SOLD SEP 2, 2026
$550,000
D
Land— sq ft
3324 Raymond Ave, Altadena, CA 91001
SOLD JUN 16, 2026
$550,000
E
Land— sq ft
275 E Pentagon St, Altadena, CA 91001

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Earn from this home

Sell

$785,639

Est. take-home

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Refinance

Est. cash available

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Rent

$4,439/mo

Redfin rental estimate

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Market trends in 91001, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

102.5%

0.1% MoM

Median sale price

$1.6M

$31K MoM

Avg. days on market

45d

5 days MoM

Recently sold homes

0 MoM

New listings for sale

OPEN SUN, 1PM TO 4PM
$2,350,000
3 beds3 baths2,419 sq ft
1211 E Palm St, Altadena, CA 91001
OPEN SAT, 2PM TO 4PM
$1,595,000
4 beds3 baths1,932 sq ft
4369 El Prieto Rd, Altadena, CA 91001
Compass
OPEN SAT, 1PM TO 4PM
$1,099,000
3 beds2 baths1,810 sq ft
93 Reever Way, Altadena, CA 91001
OPEN SAT, 12PM TO 3PM
$1,398,000
3 beds2 baths1,408 sq ft
1856 Harding Ave, Altadena, CA 91001
OPEN SAT, 1PM TO 3PM
$2,388,000
5 beds5.5 baths3,806 sq ft
2195 Mendocino Ln, Altadena, CA 91001
The Agency
OPEN SAT, 2PM TO 4PM
$2,295,000
3 beds2.5 baths2,474 sq ft
2062 New York Dr, Altadena, CA 91001
OPEN SAT, 2PM TO 4PM
$1,898,000
4 beds4 baths2,469 sq ft
2391 Catherine Rd, Altadena, CA 91001
$2,848,000
6 beds5 baths4,180 sq ft
2098 Roosevelt, Altadena, CA 91001
$1,089,000
3 beds1 bath1,264 sq ft
200 W Terrace St, Altadena, CA 91001
See all

Provided by Redfin

Sale history for 623 Athens St

Year

Property tax

Land + Additions

Assessment*

2025

$1,561 (−61.4%)

$119,521

2024

$4,049 (+1.0%)

$117,178

2023

$4,009 (+3.5%)

$176,740 + $137,977

$314,717

2022

$3,875 (+6.3%)

$173,275 + $135,272

$308,547

2021

$3,647 (+3.8%)

$169,878 + $132,620

$302,498

2020

$3,513

$166,548 + $130,020

$296,568

2019

$3,515 (−0.5%)

$164,841 + $128,687

$293,528

2018

$3,534 (+1.1%)

$161,609 + $126,164

$287,773

2017

$3,497 (+2.5%)

$155,335 + $121,266

$276,601

2016

$3,412 (+1.1%)

$155,335 + $121,266

$276,601

2015

$3,374 (+1.8%)

$152,290 + $118,889

$271,179

2014

$3,315 (+1.2%)

$147,065 + $114,811

$261,876

2012

$3,275 (+2.5%)

$146,401 + $114,293

$260,694

2011

$3,196 (+1.6%)

$143,531 + $112,052

$255,583

2010

$3,145 (−0.5%)

$140,717 + $109,855

$250,572

2009

$3,160 (+6.4%)

$139,666 + $109,034

$248,700

2008

$2,971

$139,998 + $109,294

$249,292

Tax history for 623 Athens St

Year

Property tax

Land + Additions

Assessment*

2025

$1,561 (−61.4%)

$119,521

2024

$4,049 (+1.0%)

$117,178

2023

$4,009 (+3.5%)

$176,740 + $137,977

$314,717

2022

$3,875 (+6.3%)

$173,275 + $135,272

$308,547

2021

$3,647 (+3.8%)

$169,878 + $132,620

$302,498

2020

$3,513

$166,548 + $130,020

$296,568

2019

$3,515 (−0.5%)

$164,841 + $128,687

$293,528

2018

$3,534 (+1.1%)

$161,609 + $126,164

$287,773

2017

$3,497 (+2.5%)

$155,335 + $121,266

$276,601

2016

$3,412 (+1.1%)

$155,335 + $121,266

$276,601

2015

$3,374 (+1.8%)

$152,290 + $118,889

$271,179

2014

$3,315 (+1.2%)

$147,065 + $114,811

$261,876

2012

$3,275 (+2.5%)

$146,401 + $114,293

$260,694

2011

$3,196 (+1.6%)

$143,531 + $112,052

$255,583

2010

$3,145 (−0.5%)

$140,717 + $109,855

$250,572

2009

$3,160 (+6.4%)

$139,666 + $109,034

$248,700

2008

$2,971

$139,998 + $109,294

$249,292

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

Permits

Feb 4, 2026 • Active

Electrical permit (simple) - county

Electrical

Jan 21, 2026 • Final

County disaster recovery permit – rebuild project

Construct a new two-story single-family home with an entry porch, attached garage, California room, attached deck, and covered patio.

New construction

Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.

Property details

Exterior

Property Information
Subdivision Name: MARATHON HEIGHTS
Living Sq. Ft: 1,488
# of Units: 1
Legal Description: MARATHON HEIGHTS NW 50 FT OF LOT 15

Lot Information
# of Buildings: 1
Land Sq. Ft: 9,012
Legal Lot Number: 15
Legal Block Number: 2
Acres: 0.2069
Depth Footage: 180
Front Footage: 50
Zoning Code: LCR175
County Use Description: SINGLE FAMILY RESID

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 1,488
Stories: —
Lot Size: 9,012 square feet
Style: Single Family Residential
Year Built: 1939
Year Renovated: 1971
County: Los Angeles County
APN: 5841004019

Home facts updated by county records on Oct 8, 2026

Around this home

Schools

Altadena Elementary School

Public K-5 • Assigned • 0.8mi

5/10

Eliot Arts Magnet

Public 6-8 • Assigned • 1.0mi

2/10

John Muir High School

Public 9-12 • Assigned • 2.1mi

4/10

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

8/10 Fire Factor

27% chance of being in a wildfire in next 30 years

5/10 Heat Factor

4 days above 95° expected this year, 12 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

9/10 Air Factor

21 unhealthy days expected this year, 24 days in 30 years

Provided by First Street

Historical weather

Altadena, CA • 91001

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 10.2 hours in June and 6.5 hours in December, placing it above the U.S. average for solar exposure.

10.2 hrs

6.5 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$791,000 – $957,000

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Nearby similar homes

$599,900

Land— sq ft

3041 Via Maderas St, Altadena, CA 91001

NEW 24 HRS AGO

$685,000

Land— sq ft

2228 Maiden Ln, Altadena, CA 91001

OPEN SAT, 1PM TO 4PM

$1,099,000

3 beds2 baths1,810 sq ft

93 Reever Way, Altadena, CA 91001

$1,295,000

Land— sq ft

2235 Mar Vista Ave, Altadena, CA 91001

$698,000

Land— sq ft

3805 Alzada Rd, Altadena, CA 91001

COMPASS

OPEN SAT, 1PM TO 4PM3D WALKTHROUGH

$1,599,990

4 beds3.5 baths2,253 sq ft

2 W Pine St, Altadena, CA 91001

New listings for sale in 91001

OPEN SUN, 1PM TO 4PM

$2,350,000

3 beds3 baths2,419 sq ft

1211 E Palm St, Altadena, CA 91001

OPEN SAT, 2PM TO 4PM

$1,595,000

4 beds3 baths1,932 sq ft

4369 El Prieto Rd, Altadena, CA 91001

Compass

OPEN SAT, 1PM TO 4PM

$1,099,000

3 beds2 baths1,810 sq ft

93 Reever Way, Altadena, CA 91001

OPEN SAT, 12PM TO 3PM

$1,398,000

3 beds2 baths1,408 sq ft

1856 Harding Ave, Altadena, CA 91001

OPEN SAT, 1PM TO 3PM

$2,388,000

5 beds5.5 baths3,806 sq ft

2195 Mendocino Ln, Altadena, CA 91001

The Agency

OPEN SAT, 2PM TO 4PM

$2,295,000

3 beds2.5 baths2,474 sq ft

2062 New York Dr, Altadena, CA 91001

OPEN SAT, 2PM TO 4PM

$1,898,000

4 beds4 baths2,469 sq ft

2391 Catherine Rd, Altadena, CA 91001

$2,848,000

6 beds5 baths4,180 sq ft

2098 Roosevelt, Altadena, CA 91001

$1,089,000

3 beds1 bath1,264 sq ft

200 W Terrace St, Altadena, CA 91001

Home values near 623 Athens St

Data from public records.

Address	Redfin Estimate
661 Athens Street, Altadena, CA 3 Beds \| 4 Baths \| 2544 Sq. Ft.	$1,277,210
613 Athens Street, Altadena, CA 3 Beds \| 1 Baths \| 1738 Sq. Ft.	$861,582

Address	Redfin Estimate
649 Athens Street, Altadena, CA 4 Beds \| 2 Baths \| 1674 Sq. Ft.	$1,115,062
603 Athens Street, Altadena, CA 2 Beds \| 2 Baths \| 1140 Sq. Ft.	$999,782

Address	Redfin Estimate
631 Athens Street, Altadena, CA 3 Beds \| 3 Baths \| 1042 Sq. Ft.	$875,100
589 Athens Street, Altadena, CA 3 Beds \| 2 Baths \| 1712 Sq. Ft.	$1,190,564

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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 91001, CA

Sale history for 623 Athens St

Tax history for 623 Athens St

Permits

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91001

Home values near 623 Athens St

More real estate resources