Google street view image for 19271 Castlebay Ln, Porter Ranch, CA 91326

Off market mar 1991 for $295K

$1,239,115

Est. refi paymentEst. refi $575/mo

•

4 ba

•

2,612

sq ft

19271 Castlebay Ln, Porter Ranch, CA 91326

About this home

19271 Castlebay Ln is a 2,612 square foot house on a 0.25 acre lot with 4 bedrooms and 4 bathrooms. - it last sold on March 26, 1991 for $295,000. Based on Redfin's Porter Ranch data, we estimate the home's value is $1,239,115.

Single-familyProperty Type

1966Year Built

0.25 acresLot Size

$474Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,239,115

$944K since sold in March 1991$11K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 0.4% higher than the average sale price ($1.23M) of 6 comparable homes.

SOLD JUL 2, 2026
$1,389,000
A
4 beds3 baths2,618 sq ft
19238 Castlebay Ln, Porter Ranch, CA 91326
Equity Union
SOLD OCT 8, 2026
$1,150,000
B
4 beds2.5 baths2,552 sq ft
11856 Porter Valley Dr, Porter Ranch, CA 91326
SOLD SEP 23, 2026
11833 Preston Trails Ave, Porter Ranch, CA 91326
$1,055,000
C
4 beds3 baths2,620 sq ft
11833 Preston Trails Ave, Porter Ranch, CA 91326
Coldwell Banker Realty
SOLD AUG 19, 2026
$1,231,600
D
3 beds3 baths2,492 sq ft
12251 Derwent Ave, Porter Ranch, CA 91326
SOLD MAY 11, 2026
$1,300,000
E
4 beds3 baths2,450 sq ft
18931 Kinbrace St, Porter Ranch, CA 91326
SOLD MAR 18, 2026
$1,280,000
F
4 beds3 baths2,543 sq ft
12115 Braemore Pl, Porter Ranch, CA 91326

Claim this home to receive a free report every month with insights on the changing estimate.

Earn from this home

Sell

$1,170,905

Est. take-home

List your home with Redfin and save $6,196

Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$6,374/mo

Redfin rental estimate

List your home for rent

Market trends in Porter Ranch, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

99.2%

+0.0% MoM

Median sale price

$1.2M

$57K MoM

Avg. days on market

41d

2 days MoM

Recently sold homes

9 MoM

New listings for sale

VIDEO TOUR
$1,274,900
5 beds3 baths2,450 sq ft
18854 Muirkirk, Porter Ranch, CA 91326
$1,195,000
4 beds3 baths2,814 sq ft
12026 Falcon Crst, Porter Ranch, CA 91326
$1,420,000
4 beds3 baths2,399 sq ft
20609 W Chestnut Cir, Porter Ranch, CA 91326
VIDEO TOUR
$850,000
2 beds2.5 baths1,399 sq ft
11501 Meleto, Porter Ranch, CA 91326
$1,170,000
5 beds2.5 baths1,944 sq ft
19776 Ahwanee Ln, Porter Ranch, CA 91326
$949,950
2 beds2 baths1,418 sq ft
18658 Brymer St, Porter Ranch, CA 91326
$1,325,000
5 beds3 baths2,618 sq ft
19309 Olympia St, Porter Ranch, CA 91326
COMING SOON
$3,295,000
5 beds6 baths5,067 sq ft
20218 W Liverpool Way, Porter Ranch, CA 91326
VIDEO TOUR
$2,099,000
5 beds5 baths4,116 sq ft
20362 Via Galileo, Porter Ranch, CA 91326
$2,649,000
4 beds4.5 baths5,492 sq ft
20239 Jubilee Way W, Porter Ranch, CA 91326
See all

Provided by Redfin

Sale history for 19271 Castlebay Ln

Year

Property tax

Land + Additions

Assessment*

2025

$8,237 (+1.2%)

$217,076 + $453,987

$671,063

2024

$8,141 (+1.9%)

$212,820 + $445,086

$657,906

2023

$7,988 (+4.8%)

$208,648 + $436,359

$645,007

2022

$7,624 (+1.4%)

$204,557 + $427,803

$632,360

2021

$7,521 (−0.9%)

$200,547 + $419,415

$619,962

2020

$7,592 (+4.0%)

$196,615 + $411,192

$607,807

2019

$7,300 (+1.5%)

$194,599 + $406,976

$601,575

2018

$7,195 (+2.2%)

$190,784 + $398,997

$589,781

2017

$7,038 (+2.6%)

$183,377 + $383,504

$566,881

2016

$6,860 (+1.5%)

$183,377 + $383,504

$566,881

2015

$6,761 (−0.4%)

$179,782 + $375,985

$555,767

2014

$6,788 (−1.3%)

$173,614 + $363,084

$536,698

2012

$6,876 (+3.3%)

$172,830 + $361,444

$534,274

2011

$6,654 (+198.0%)

$169,442 + $354,357

$523,799

2010

$2,233 (+3.6%)

$166,120 + $347,409

$513,529

2009

$2,155 (−57.3%)

$164,879 + $101

$164,980

2008

$5,040

$165,271 + $102

$165,373

Tax history for 19271 Castlebay Ln

Year

Property tax

Land + Additions

Assessment*

2025

$8,237 (+1.2%)

$217,076 + $453,987

$671,063

2024

$8,141 (+1.9%)

$212,820 + $445,086

$657,906

2023

$7,988 (+4.8%)

$208,648 + $436,359

$645,007

2022

$7,624 (+1.4%)

$204,557 + $427,803

$632,360

2021

$7,521 (−0.9%)

$200,547 + $419,415

$619,962

2020

$7,592 (+4.0%)

$196,615 + $411,192

$607,807

2019

$7,300 (+1.5%)

$194,599 + $406,976

$601,575

2018

$7,195 (+2.2%)

$190,784 + $398,997

$589,781

2017

$7,038 (+2.6%)

$183,377 + $383,504

$566,881

2016

$6,860 (+1.5%)

$183,377 + $383,504

$566,881

2015

$6,761 (−0.4%)

$179,782 + $375,985

$555,767

2014

$6,788 (−1.3%)

$173,614 + $363,084

$536,698

2012

$6,876 (+3.3%)

$172,830 + $361,444

$534,274

2011

$6,654 (+198.0%)

$169,442 + $354,357

$523,799

2010

$2,233 (+3.6%)

$166,120 + $347,409

$513,529

2009

$2,155 (−57.3%)

$164,879 + $101

$164,980

2008

$5,040

$165,271 + $102

$165,373

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

Permits

May 29, 2009 • Final

Bldg-addition

Construct a new covered entry porch at the first floor and a second floor addition including a master bedroom, bathroom, and walk-in closet. Perform an interior remodel and repair the roof due to fire damage.

Addition

Remodel

Nov 14, 2008 • Final

Grading

Construct an addition to a single-family home.

Addition

Grading

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

Property Information
Subdivision Name: 28648
Living Sq. Ft: 2,612
# of Units: 1
Legal Description: TRACT NO 28648 LOT 1

Lot Information
# of Buildings: 1
Land Sq. Ft: 10,920
Legal Lot Number: 1
Municipality Name: LOS ANGELES
Acres: 0.2507
Depth Footage: 129
Front Footage: 85
Zoning Code: LARS
County Use Description: SINGLE FAMILY RESID

Location Information
Parcel Location Influence: Corner

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 4
Baths: 4.0
Sq. Ft.: 2,612
Stories: —
Lot Size: 0.25 acres
Style: Single Family Residential
Year Built: 1966
Year Renovated: 1980
County: Los Angeles County
APN: 2820008001

Home facts updated by county records on Oct 8, 2026

Around this home

Schools

Castlebay Lane Charter School

Charter K-5 • Assigned • 0.4mi

10/10

Robert Frost Middle School

Public 6-8 • Assigned • 2.4mi

9/10

Valley Academy Of Arts And Sciences

Public 9-12 • Assigned • 3.7mi

7/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Porter Ranch is best known for its upscale homes and scenic views, offering a luxurious suburban lifestyle. The area features well-planned communities, abundant parks, and access to hiking trails, making it ideal for those who enjoy outdoor...
7 days ago • Porter Ranch
Scott Reiber
Redfin Premier agent
349 deals
Was this helpful?
LA real estate remains resilient, with long-term demand, limited desirable inventory, and strong neighborhood-by-neighborhood opportunities. For savvy buyers and sellers, the current market creates opportunities to negotiate strategically and build...
5 days ago • Los Angeles
Phil Robinson
Redfin agent
58 deals
Was this helpful?
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,...
1 month ago • Los Angeles
Peter Santos
Redfin Premier agent
86 deals
Was this helpful?

Climate risks

1/10 Flood Factor

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

7/10 Fire Factor

26% chance of being in a wildfire in next 30 years

5/10 Heat Factor

5 days above 100° expected this year, 14 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

5/10 Air Factor

7 unhealthy days expected this year, 9 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

$1.18M – $1.43M

Reach more buyers when you sell with Redfin. Save up to $12,391 in fees. 3 minutes to get started.

Need the cash from your home fast? Sell to .

Nearby similar homes

$1,170,000

5 beds2.5 baths1,944 sq ft

19776 Ahwanee Ln, Porter Ranch, CA 91326

$3,685,000

5 beds4.5 baths4,932 sq ft

20336 W Windsor Ln, Porter Ranch, CA 91326

$1,199,899

4 beds3 baths2,826 sq ft

18313 Index St, Porter Ranch, CA 91326

OPEN SAT, 1PM TO 4PM

$1,399,000

4 beds3 baths3,191 sq ft

11842 Eddleston Dr, Porter Ranch, CA 91326

$2,750,000

5 beds5 baths4,407 sq ft

17814 Greyhawk Pl, Granada Hills, CA 91344

3D WALKTHROUGH

$1,620,000

5 beds3 baths2,355 sq ft

19270 Ludlow St, Los Angeles, CA 91324

New listings for sale in 91326

VIDEO TOUR

$1,274,900

5 beds3 baths2,450 sq ft

18854 Muirkirk, Porter Ranch, CA 91326

$1,195,000

4 beds3 baths2,814 sq ft

12026 Falcon Crst, Porter Ranch, CA 91326

$1,420,000

4 beds3 baths2,399 sq ft

20609 W Chestnut Cir, Porter Ranch, CA 91326

VIDEO TOUR

$850,000

2 beds2.5 baths1,399 sq ft

11501 Meleto, Porter Ranch, CA 91326

$1,170,000

5 beds2.5 baths1,944 sq ft

19776 Ahwanee Ln, Porter Ranch, CA 91326

$949,950

2 beds2 baths1,418 sq ft

18658 Brymer St, Porter Ranch, CA 91326

$1,325,000

5 beds3 baths2,618 sq ft

19309 Olympia St, Porter Ranch, CA 91326

COMING SOON

$3,295,000

5 beds6 baths5,067 sq ft

20218 W Liverpool Way, Porter Ranch, CA 91326

VIDEO TOUR

$2,099,000

5 beds5 baths4,116 sq ft

20362 Via Galileo, Porter Ranch, CA 91326

Home values near 19271 Castlebay Ln

Data from public records.

Address	Redfin Estimate
19265 Castlebay Ln, Porter Ranch, CA 3 Beds \| 3 Baths \| 2003 Sq. Ft.	$1,098,541
19243 Castlebay Ln, Porter Ranch, CA 5 Beds \| 3 Baths \| 2310 Sq. Ft.	$1,210,695

Address	Redfin Estimate
19257 Castlebay Ln, Porter Ranch, CA 4 Beds \| 3 Baths \| 2450 Sq. Ft.	$1,222,275
19235 Castlebay Ln, Porter Ranch, CA 4 Beds \| 3 Baths \| 2465 Sq. Ft.	$1,153,255

Address	Redfin Estimate
19251 Castlebay Ln, Porter Ranch, CA 3 Beds \| - Baths \| 2492 Sq. Ft.	$1,231,318
19227 Castlebay Ln, Porter Ranch, CA 4 Beds \| 3 Baths \| 2378 Sq. Ft.	$1,313,023

Download the Redfin App on the Apple App Store

Download the Redfin App from the Google Play Store

Join us

Become an Agent

Get referrals

Careers

Find homes faster

About us

Find us

Subsidiaries

Affiliated Business

Countries

United States

Canada

Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.

Do not sell or share my personal information.

REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.

California DRE #01521930

Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures

New Mexico Real Estate Licenses

TREC: Info About Brokerage Services, Consumer Protection Notice

All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.

Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.

If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.

REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.

GreatSchools Ratings provided by GreatSchools.org.

90027 homes for sale
90049 homes for sale
90503 homes for sale
90505 homes for sale
90210 homes for sale

Houses for rent in Los Angeles	Agents near me	Irvine, CA homes for sale	Los Angeles Housing Market
Houses for sale near me	San Diego, CA homes for sale	Fremont, CA homes for sale
Land for sale near me	San Francisco, CA homes for sale	Sacramento, CA homes for sale
Open Houses near me	Los Angeles, CA homes for sale	Los Angeles Property Records
Condos for sale near me	San Jose, CA homes for sale	CA New Listings

Pasadena homes for sale
Long Beach homes for sale
Huntington Beach homes for sale

About this home

Redfin Estimate

Earn from this home

Market trends in Porter Ranch, CA

Sale history for 19271 Castlebay Ln

Tax history for 19271 Castlebay Ln

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 19271 Castlebay Ln

More real estate resources