Google street view image for 18831 Los Alimos St, Porter Ranch, CA 91326

Off market nov 1993 for $356K

$1,306,330

Est. refi paymentEst. refi $2,688/mo

•

3 ba

•

2,974

sq ft

18831 Los Alimos St, Porter Ranch, CA 91326

About this home

18831 Los Alimos St is a 2,974 square foot house on a 8,900 square foot lot with 5 bedrooms and 3 bathrooms. - it last sold on November 24, 1993 for $356,000. Based on Redfin's Porter Ranch data, we estimate the home's value is $1,306,330.

Single-familyProperty Type

1978Year Built

8,900 sq ftLot Size

$439Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,306,330

$950K since sold in November 1993$0 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 5.8% higher than the average sale price ($1.23M) of 6 comparable homes.

SOLD MAY 19, 2026
$1,005,000
A
5 beds3 baths2,591 sq ft
18301 Chatsworth St, Porter Ranch, CA 91326
SOLD JUN 12, 2026
$1,370,000
B
5 beds3 baths3,004 sq ft
18814 Los Alimos St, Northridge, CA 91326
SOLD DEC 5, 2025
$1,275,000
C
5 beds3 baths3,004 sq ft
10721 Crebs Ave, Porter Ranch, CA 91326
SOLD JUL 7, 2026
$1,200,000
D
4 beds3 baths2,452 sq ft
18770 Tribune, Los Angeles, CA 91326
SOLD JUL 20, 2026
$1,345,000
E
5 beds3 baths2,494 sq ft
19461 Twin Hills Pl, Porter Ranch, CA 91326
SOLD SEP 29, 2026
$1,212,500
F
4 beds3 baths2,228 sq ft
18599 Calle Vis, Porter Ranch, CA 91326

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Earn from this home

Sell

$1,234,481

Est. take-home

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Est. cash available

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Rent

$6,075/mo

Redfin rental estimate

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Market trends in Northridge West, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.0%

0.1% MoM

Median sale price

$1.1M

$62K MoM

Avg. days on market

51d

0 days MoM

Recently sold homes

1 MoM

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OPEN TODAY, 12PM TO 4PM
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4 beds3 baths1,917 sq ft
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VIDEO TOUR
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$2,399,995
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COMING SOON
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OPEN SUN, 1PM TO 4PM
$1,799,950
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See all

Provided by Redfin

Sale history for 18831 Los Alimos St

Year

Property tax

Land + Additions

Assessment*

2025

$7,682 (+1.3%)

$228,136 + $389,026

$617,162

2024

$7,580 (+1.9%)

$223,663 + $381,399

$605,062

2023

$7,439 (+4.7%)

$219,278 + $373,921

$593,199

2022

$7,104 (+1.4%)

$214,979 + $366,590

$581,569

2021

$7,004 (−0.9%)

$210,764 + $359,402

$570,166

2020

$7,069 (+3.9%)

$206,632 + $352,355

$558,987

2019

$6,800 (+2.7%)

$204,514 + $348,743

$553,257

2018

$6,620 (+2.2%)

$200,504 + $341,905

$542,409

2017

$6,476 (+2.7%)

$192,719 + $328,629

$521,348

2016

$6,303 (+1.5%)

$192,719 + $328,629

$521,348

2015

$6,212 (−0.4%)

$188,941 + $322,186

$511,127

2014

$6,237 (−1.3%)

$182,458 + $311,131

$493,589

2012

$6,319 (+3.2%)

$181,634 + $309,725

$491,359

2011

$6,124 (−1.1%)

$178,073 + $303,652

$481,725

2010

$6,190 (+3.7%)

$174,582 + $297,699

$472,281

2009

$5,967 (+4.4%)

$173,278 + $295,475

$468,753

2008

$5,716

$173,690 + $296,177

$469,867

Tax history for 18831 Los Alimos St

Year

Property tax

Land + Additions

Assessment*

2025

$7,682 (+1.3%)

$228,136 + $389,026

$617,162

2024

$7,580 (+1.9%)

$223,663 + $381,399

$605,062

2023

$7,439 (+4.7%)

$219,278 + $373,921

$593,199

2022

$7,104 (+1.4%)

$214,979 + $366,590

$581,569

2021

$7,004 (−0.9%)

$210,764 + $359,402

$570,166

2020

$7,069 (+3.9%)

$206,632 + $352,355

$558,987

2019

$6,800 (+2.7%)

$204,514 + $348,743

$553,257

2018

$6,620 (+2.2%)

$200,504 + $341,905

$542,409

2017

$6,476 (+2.7%)

$192,719 + $328,629

$521,348

2016

$6,303 (+1.5%)

$192,719 + $328,629

$521,348

2015

$6,212 (−0.4%)

$188,941 + $322,186

$511,127

2014

$6,237 (−1.3%)

$182,458 + $311,131

$493,589

2012

$6,319 (+3.2%)

$181,634 + $309,725

$491,359

2011

$6,124 (−1.1%)

$178,073 + $303,652

$481,725

2010

$6,190 (+3.7%)

$174,582 + $297,699

$472,281

2009

$5,967 (+4.4%)

$173,278 + $295,475

$468,753

2008

$5,716

$173,690 + $296,177

$469,867

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

Permits

Aug 7, 2019 • Final

Bldg-alter/repair

Remove existing roof tiles, apply new underlayment, and reset the roof tiles.

Roofing

Jul 9, 2019 • Final

Electrical

Install a roof-mounted solar photovoltaic system on a one or two-family residential building.

Electrical

Solar

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

Interior

Heating & Cooling
Air Conditioning Type: Central
Heating Type: Central

Exterior

Pool Information
Has Pool

Property Information
Subdivision Name: 31878
Living Sq. Ft: 2,974
# of Units: 1
Legal Description: TR=31878 LOT 4

Lot Information
# of Buildings: 1
Land Sq. Ft: 8,900
Legal Lot Number: 4
Municipality Name: LOS ANGELES
Acres: 0.2043
Depth Footage: 147
Front Footage: 67
Zoning Code: LARS
County Use Description: SINGLE FAMILY RESID

Location Information
Parcel Location Influence: Cul-De-Sac

Utility Information
Water Service Type: Public

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 5
Baths: 3.0
Sq. Ft.: 2,974
Stories: —
Lot Size: 8,900 square feet
Style: Single Family Residential
Year Built: 1978
Year Renovated: 1978
County: Los Angeles County
APN: 2717024027

Home facts updated by county records on Oct 6, 2026

Around this home

Schools

Beckford Charter for Enriched Studies

Charter K-5 • Assigned • 0.3mi

10/10

Granada Hills Charter High School

Charter K-12 • Assigned • 1.1mi

9/10

Northridge Academy High

Public 9-12 • Assigned • 1.8mi

6/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

The LA market is rewarding realistic pricing and good strategy. Buyers have more choices and are taking their time, while sellers who price correctly are still getting results. The days of simply “testing the market” are behind us—in this market,...
4 weeks ago • Los Angeles
Peter Santos
Redfin Premier agent
85 deals
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Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

2/10 Fire Factor

0.00% chance of being in a wildfire in next 30 years

6/10 Heat Factor

7 days above 100° expected this year, 17 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

6/10 Air Factor

10 unhealthy days expected this year, 12 days in 30 years

Provided by First Street

Historical weather

Porter Ranch, CA • 91326

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 hours in June and 6.3 hours in December, placing it above the U.S. average for solar exposure.

10 hrs

6.3 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.24M – $1.50M

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New listings for sale in 91326

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NEW 16 HRS AGO

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4 beds4 baths2,537 sq ft

11149 Chimineas Ave, Porter Ranch, CA 91326

OPEN TODAY, 12PM TO 4PMVIDEO TOUR

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VIDEO TOUR

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OPEN SUN, 1PM TO 4PM3D WALKTHROUGH

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Pinnacle Estate Properties

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4 beds6 baths4,721 sq ft

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OPEN SUN, 2PM TO 5PM

$989,000

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COMING SOON

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3 beds2 baths1,460 sq ft

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OPEN SUN, 1PM TO 4PM

$1,799,950

4 beds4 baths3,192 sq ft

19300 Singing Hls, Porter Ranch, CA 91326

Home values near 18831 Los Alimos St

Data from public records.

Address	Redfin Estimate
18847 Los Alimos St, Porter Ranch, CA 5 Beds \| 3 Baths \| 3004 Sq. Ft.	$1,392,584
18823 Los Alimos St, Porter Ranch, CA 5 Beds \| 3 Baths \| 3004 Sq. Ft.	$1,473,543

Address	Redfin Estimate
18841 Los Alimos St, Porter Ranch, CA 5 Beds \| 3.5 Baths \| 3004 Sq. Ft.	$1,341,874
18815 Los Alimos St, Porter Ranch, CA 5 Beds \| 4 Baths \| 3106 Sq. Ft.	$1,450,727

Address	Redfin Estimate
18837 Los Alimos St, Porter Ranch, CA 4 Beds \| 3 Baths \| 2456 Sq. Ft.	$1,299,399
18809 Los Alimos St, Los Angeles, CA 5 Beds \| 3 Baths \| 3004 Sq. Ft.	$1,407,248

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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 Northridge West, CA

Sale history for 18831 Los Alimos St

Tax history for 18831 Los Alimos St

Permits

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91326

Home values near 18831 Los Alimos St

More real estate resources