Los Angeles County  »  20391 Portside Dr

20391 Portside Drive, Walnut, CA 91789 - Property report

Also known as: 20391 Portside Dr

Property image for 20391 Portside Drive, Walnut, CA 91789
static Mapbox map

Property type

Single Family Residence (0100)

Year built

1985

Acreage

0.506

Sale price

$740,000

General Information

Unlock this property report with a free account

Access up-to-date information from property owner names to sales history, deeds, tax info, mortgages, development data, planimetric maps and more.

Address
Primary address
20391 Portside Dr
Walnut, CA 91789
Zip code
91789
County
Los Angeles

Owner

Find out who owns 20391 Portside Drive, Walnut, CA 91789. Uncover corporate and individual owners with a free account.

Building
Property type
Single Family Residence
Building sq. ft.
1,981
Buildings on lot
1
Year built
1985
Last altered
Bedrooms
4
Bathrooms
3
HVAC
Central refrigeration & heating
Sales
Sale date
01/21/2020
Sale price
$740,000
Arm's length
Tax
Tax year
2026-2027
Property tax
$9,907
Tax per sq. ft.
$5
Zoning & use
Zoning
Light Agricultural (A-1-1)
Units
1
Lot
Acreage
0.506

Area overview

Walk score
1 /100.  Car-Dependent
Transit score
0 /100.  Minimal Transit
Bike score
1 /100.  Somewhat Bikeable
School district
Walnut Valley Unified School District
Weed hazard
Yes
Ownership

Ownership information for 20391 Portside Drive, Walnut, CA

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 20391 Portside Drive, Walnut, CA 91789

Sale date Sale price Buyer name Seller name
01/21/2020 $740,000 XXXX XXX; XXXX XXXXXXX XXXXXXX XXXXX XXX
09/12/2011 $580,000 XXXXXXX XXXXXXXX X; XXXXXXX XXXXXX X XXXX XXXXX XXX

*Most recent sales on record for this property.

More about Los Angeles County property records.

Title documents

Date Type Amount Party 1 Party 2
01/21/2020 Trust Deed XXXX XXX XXXX XXXXXXX XXXXXXX
01/21/2020 Grant Deed
(Sale for consideration - full DTT - Single parcel sale)		 XXXXXXX XXXXX XXX XXXX XXX
01/21/2020 Interspousal Transfer Grant Deed XXXX XX XXX XXXX XXX
09/26/2019 Grant Deed
(Reappraisal transfer - no DTT - Single parcel sale)		 XXXXXXX XXXXXXXX X XXXXXXX XXXXX XXX
09/12/2011 Trust Deed XXXXXXX XXXXXXXX X XXXXX XXXXX XXXX
09/12/2011 Deed
(Sale for consideration - full DTT - Single parcel sale)		 XXXX XXXXX XXX XXXXXXX XXXXXXXX X
10/28/2009 Affidavit Succession Interest
(File correction - Single parcel sale)		 XXXX XXXXXX X XXXXXX XXXX XXXXX XXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 20391 Portside Drive, Walnut, CA

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2026-2027
Base tax
$9,907
Current property tax
$11,044
Tax per sq. ft.
$5
Recent tax assessments
Market value
$841,987
Land value
$591,667
Building value
$250,320

More about Los Angeles County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Assessed value Tax rate Property tax Y-o-Y change
2025-2026 $825,478 1.1766 $9,713 +1.93%
2024-2025 $809,293 1.1774 $9,529 +3.73%
2023-2024 $793,426 1.1578 $9,186 +2.22%
2022-2023 $777,869 1.1553 $8,987 +1.51%
2021-2022 $762,618 1.1609 $8,853 -5.77%
2020-2021 $811,920 1.157137 $9,395 +24.13%
2019-2020 $653,066 1.158918 $7,568 +3.11%
2018-2019 $640,262 1.1465 $7,340 +2.08%
2017-2018 $627,709 1.1456 $7,191 +1.44%
2016-2017 $615,401 1.1519 $7,089 +1.76%

Special assessments & penalties for 20391 Portside Drive, Walnut, CA

Code Description Tax levied
00747 Consolidated Fire Protection District Of La County- Measure E
00311 County Library Services
06221 County Sanitation District #21
06181 Greater L.A. County Vector Control District
03694 La County Regional Park And Open Space District
00744 Los Angeles County Fire Department
00746 Los Angeles County Fire Department Brush Initial Inspection
03071 Los Angeles County Flood Control
02800 Los Angeles County Lighting District
04000 Los Angeles County Sewer Maintenance
00197 Los Angeles County Solid Waste Service Charge
00170 Los Angeles County Trauma/Emerg Srvs
33011 Mwd Water Standby Charge #2
06859 Puente Hills Habitat Preservation Authority Cfd No. 2024-01
00177 Safe Clean Water Program Funding Measure W
36551 Three Valleys Mwd Standby Charge
37092 Walnut Valley Water Standby
Permits

Permit information for 20391 Portside Drive, Walnut, CA

No recently recorded permits for this property.

More about Los Angeles County property records

Neighborhood

Risk

Create a free account to unlock expanded risk information, such as crime incidents in the area, tsunami and landslides risks, or its location relative to FEMA flood zones and the Coastal Barriers Resources System Area (COBRA).

FEMA flood zones

FEMA flood zones
X
Landslides and liquefaction map

Fire hazard zones

Faults and tsunami inundation zones map
Crime incidents map

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 20391 Portside Drive, Walnut, CA 91789 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
Montessori School Of Diamond Bar NR Private PK-K 28 0.65
Montessori School Of Diamond Bar NR Private PK-K 28 0.65
Castle Rock Elementary School 7 Public K-5 646 0.78
Tzu Chi Elementary School - Walnut NR Private K-5 53 0.96
Shelyn Elementary School 7 Public K-6 453 1.22
Elite Open School NR Private 5-12 43 1.27
Evergreen Elementary School 9 Public K-5 719 1.36
Ybarra Academy For The Arts And Technology 7 Public K-8 596 1.50
Wisdom Kids College NR Private K-8 0 1.52
Killian Elementary School 6 Public K-6 452 1.78
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Elite Open School NR Private 5-12 43 1.27
South Pointe Middle School 8 Public 6-8 879 1.32
Ybarra Academy For The Arts And Technology 7 Public K-8 596 1.50
Wisdom Kids College NR Private K-8 0 1.52
International Cross Academy NR Private 1-12 0 1.55
Rowland Adult And Community Education NR Public 0 1.79
Walnut Valley Adult NR Public 0 1.82
Rowland Unified Community Day School NR Public 7-12 31 1.91
Elite Open School NR Private 5-12 70 1.93
Ivy League School NR Private K-11 64 1.93
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Diamond Bar High School 10 Public 9-12 2,557 1.04
Elite Open School NR Private 5-12 43 1.27
International Cross Academy NR Private 1-12 0 1.55
John A. Rowland High School 8 Public 9-12 2,025 1.69
Rowland Adult And Community Education NR Public 0 1.79
Walnut Valley Adult NR Public 0 1.82
Rowland Unified Community Day School NR Public 7-12 31 1.91
Elite Open School NR Private 5-12 70 1.93
Ivy League School NR Private K-11 64 1.93
Institute of Knowledge NR Private K-10 265 2.10

Data provided by GreatSchools.org © 2026. All rights reserved.

Neighbors for 20391 Portside Drive, Walnut, CA

2801 S Jalee CT, Walnut 20417 E Crestline Dr, Walnut 20383 Portside Dr, Walnut 20395 Portside Dr, Walnut 20492 E Crestline Dr, Walnut 20439 E Crestline Dr, Walnut 20484 E Crestline Dr, Walnut 2804 S Jalee CT, Walnut 20379 Portside Dr, Walnut 2803 S Jalee CT, Walnut 2800 S Jalee CT, Walnut 2810 S Jalee CT, Walnut 20387 Portside Dr, Walnut 2809 S Jalee CT, Walnut 20407 E Crestline Dr, Walnut 2817 S Jalee CT, Walnut 20397 Portside Dr, Walnut 20401 E Crestline Dr, Walnut 20411 E Crestline Dr, Walnut 20425 E Crestline Dr, Walnut

Nearby ZIP codes for 20391 Portside Drive, Walnut, CA

91722, Los Angeles County, CA 91723, Los Angeles County, CA 91724, Los Angeles County, CA 91744, Los Angeles County, CA 91745, Los Angeles County, CA 91748, Los Angeles County, CA 91768, Los Angeles County, CA 91773, Los Angeles County, CA 92821, Orange County, CA

Frequently asked questions

What is the year built for 20391 Portside Drive, Walnut, CA 91789?

The development at 20391 Portside Drive, Walnut, CA 91789 was built in 1985.

What is the total square footage of 20391 Portside Drive, Walnut, CA 91789?

20391 Portside Drive, Walnut, CA 91789 has a total of 1,981 square feet.

When was 20391 Portside Drive, Walnut, CA 91789 last sold and what was the sale price?

20391 Portside Drive, Walnut, CA 91789 was last sold on 01/21/2020 for $740,000.

What is the assessed value of 20391 Portside Drive, Walnut, CA 91789?

20391 Portside Drive, Walnut, CA 91789 is currently assessed at $825,478.

What are the property taxes for 20391 Portside Drive, Walnut, CA 91789?

The property taxes for 20391 Portside Drive, Walnut, CA 91789 total $9,712.

Disclaimer

Copyright 2003-2026 by PropertyShark.com

All data comes from government sources. No attempt has been made to validate it. No attempt has been made to validate the accuracy of the programming of this website.

Do not rely on this report to support investment decisions. The only authoritative source for the information in this report is the government agencies from which the data was acquired.

Sign up for a free account