Los Angeles County  »  20374 Portside Dr

20374 Portside Drive, Walnut, CA 91789 - Property report

Also known as: 20374 Portside Dr

Property image for 20374 Portside Drive, Walnut, CA 91789
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Property type

Single Family Residence with Pool (0101)

Year built

1985

Acreage

0.261

Sale price

$1,450,000

General Information

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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
20374 Portside Dr
Walnut, CA 91789
Zip code
91789
County
Los Angeles

Owner

Find out who owns 20374 Portside Drive, Walnut, CA 91789. Uncover corporate and individual owners with a free account.

Building
Property type
Single Family Residence with Pool
Building sq. ft.
2,072
Buildings on lot
1
Year built
1985
Last altered
Bedrooms
4
Bathrooms
3
HVAC
Central refrigeration & heating
Pool
Yes
Sales
Sale date
10/16/2025
Sale price
$1,450,000
Arm's length
Tax
Tax year
2026-2027
Property tax
$17,402
Tax per sq. ft.
$8
Zoning & use
Zoning
Light Agricultural (A-1-1)
Units
1
Lot
Acreage
0.261

Area overview

Walk score
1 /100.  Car-Dependent
Transit score
0 /100.  Minimal Transit
Bike score
2 /100.  Somewhat Bikeable
School district
Rowland Unified School District
Walnut Valley Unified School District
Weed hazard
No
Ownership

Ownership information for 20374 Portside Drive, Walnut, CA

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

Sales history for 20374 Portside Drive, Walnut, CA 91789

Sale date Sale price Buyer name Seller name
10/16/2025 $1,450,000 XXX XXXXXXX XXXX XXXXXX X XXXXXXX; XXXXXX X XXXX XXX XXXXX X XXXX XXXXXXXXX XXXXX; XXXX XXXXX X XXXXXXX
12/30/2008 $3,400,034 XXXXXXXXX XXXXXXX XXXXX,XX
02/01/2008 $673,000 XXXX XXXXXX X XXX XXXXX X XXXX XXXXXXXXX XXXXX; XXXX XXXXX X XXXXXXX; XXXX XXXXXX X XXXXXXX XXXXXX XXXXXX XXXXXX XXXXX; XXXXXX XXXXXX XXXXXX XXXXXXX

*Most recent sales on record for this property.

More about Los Angeles County property records.

Title documents

Date Type Amount Party 1 Party 2
10/16/2025 Grant Deed
(Sale for consideration - full DTT)		 XXXX XXXXXX X XXXXXXX XXX XXXXXXX
10/16/2025 Interspousal Transfer Grant Deed XXXXX XXXXX XXX XXXXXXX
02/22/2021 Reconveyance
Substitution Trustee		 XXXX XXXXXX XXXX XXXXXX
01/29/2021 Grant Deed
(File correction - Single parcel sale)		 XXXX XXXXXX X XXXX XXXXXX X XXXXXXX
01/29/2021 Trust Deed XXXX XXXXXX X XXXXXXX XXXXX XXX
01/29/2021 Grant Deed XXXX XXXXXX X XXXXXXX XXXX XXXXXX X
06/10/2020 Grant Deed
(File correction - Single parcel sale)		 XXXX XXXXXX XXXX XXXXXX X XXXXXXX
06/10/2020 Trust Deed XXXX XXXXXX XXXXXXX XXXXX XXX
06/10/2020 Grant Deed XXXX XXXXXX X XXXXXXX XXXX XXXXXX
06/05/2019 Grant Deed
(File correction - Single parcel sale)		 XXXX XXXXXX X XXXX XXXXXX X XXXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 20374 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
$17,402
Current property tax
$18,541
Tax per sq. ft.
$8
Recent tax assessments
Market value
$1,479,000
Land value
$1,047,642
Building value
$431,358

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 $819,972 1.1766 $9,648 +1.93%
2024-2025 $803,895 1.1774 $9,465 +3.73%
2023-2024 $788,133 1.1578 $9,125 +2.22%
2022-2023 $772,681 1.1553 $8,927 +1.51%
2021-2022 $757,531 1.1609 $8,794 +1.36%
2020-2021 $749,765 1.157137 $8,676 +3.88%
2019-2020 $720,653 1.158918 $8,352 +3.11%
2018-2019 $706,524 1.1465 $8,100 +2.08%
2017-2018 $692,671 1.1456 $7,935 +1.44%
2016-2017 $679,090 1.1519 $7,823 +1.76%

Special assessments & penalties for 20374 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 20374 Portside Drive, Walnut, CA

Issued date Permit number Permit type Sub type Valuation Expire date Status
09/15/2017
06/14/2017

*Most recent permits on record for this property.

More about Los Angeles County property records

Neighborhood

Risk

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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 20374 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 0.71
Montessori School Of Diamond Bar NR Private PK-K 28 0.71
Castle Rock Elementary School 7 Public K-5 646 0.84
Tzu Chi Elementary School - Walnut NR Private K-5 53 0.91
Shelyn Elementary School 7 Public K-6 453 1.15
Elite Open School NR Private 5-12 43 1.22
Evergreen Elementary School 9 Public K-5 719 1.42
Ybarra Academy For The Arts And Technology 7 Public K-8 596 1.45
Wisdom Kids College NR Private K-8 0 1.47
Killian Elementary School 6 Public K-6 452 1.71
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Elite Open School NR Private 5-12 43 1.22
South Pointe Middle School 8 Public 6-8 879 1.33
Ybarra Academy For The Arts And Technology 7 Public K-8 596 1.45
Wisdom Kids College NR Private K-8 0 1.47
International Cross Academy NR Private 1-12 0 1.53
Rowland Adult And Community Education NR Public 0 1.72
Walnut Valley Adult NR Public 0 1.81
Rowland Unified Community Day School NR Public 7-12 31 1.84
Elite Open School NR Private 5-12 70 1.86
Ivy League School NR Private K-11 64 1.86
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Diamond Bar High School 10 Public 9-12 2,557 1.09
Elite Open School NR Private 5-12 43 1.22
International Cross Academy NR Private 1-12 0 1.53
John A. Rowland High School 8 Public 9-12 2,025 1.62
Rowland Adult And Community Education NR Public 0 1.72
Walnut Valley Adult NR Public 0 1.81
Rowland Unified Community Day School NR Public 7-12 31 1.84
Elite Open School NR Private 5-12 70 1.86
Ivy League School NR Private K-11 64 1.86
Institute of Knowledge NR Private K-10 265 2.12

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

Neighbors for 20374 Portside Drive, Walnut, CA

2749 S Hillrise Dr, Walnut 2765 S Hillrise Dr, Walnut 2781 S Hillrise Dr, Walnut 20388 Portside Dr, Walnut 20359 E Crestline Dr, Walnut 2757 S Hillrise Dr, Walnut 20353 E Crestline Dr, Walnut 2745 S Hillrise Dr, Walnut 2773 S Hillrise Dr, Walnut 20365 E Crestline Dr, Walnut 20370 Portside Dr, Walnut 2789 S Hillrise Dr, Walnut 20347 E Crestline Dr, Walnut 20354 Portside Dr, Walnut 20378 Portside Dr, Walnut 20389 E Crestline Dr, Walnut 20383 E Crestline Dr, Walnut 2798 S Hillrise Dr, Walnut 20377 E Crestline Dr, Walnut 20371 E Crestline Dr, Walnut

Nearby ZIP codes for 20374 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 20374 Portside Drive, Walnut, CA 91789?

The development at 20374 Portside Drive, Walnut, CA 91789 was built in 1985.

What is the total square footage of 20374 Portside Drive, Walnut, CA 91789?

20374 Portside Drive, Walnut, CA 91789 has a total of 2,072 square feet.

When was 20374 Portside Drive, Walnut, CA 91789 last sold and what was the sale price?

20374 Portside Drive, Walnut, CA 91789 was last sold on 10/16/2025 for $1,450,000.

What is the assessed value of 20374 Portside Drive, Walnut, CA 91789?

20374 Portside Drive, Walnut, CA 91789 is currently assessed at $819,972.

What are the property taxes for 20374 Portside Drive, Walnut, CA 91789?

The property taxes for 20374 Portside Drive, Walnut, CA 91789 total $9,647.

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