20633 E Alda Ct, Diamond Bar (Walnut), CA 91789 Property Records

Los Angeles County property record for 20633 E Alda Ct, Diamond Bar, CA 91789

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,515 sqft · built 1981
Lot Size	0.31 acres (13,492 sqft)
Owner	Individual Name on Record
Last Sale	$288,000 (Apr 1997)
Tax Bill	$6,391 (2025)
Deeds & Mortgages	Apr 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8763-017-041`

Property Details

APN / Parcel Number

Primary APN	`8763-017-041`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	2,515 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1981
Effective Year Built	Effective 1981
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	13,492 sqft (0.31 acres)
Lot Dimensions	145 ft deep x 91 ft wide
Garage Type	Attached

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Water Source	Commercial

Location & Zoning

Street Address	20633 E ALDA CT
City	WALNUT
State	CA
Zip	91789-3840
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR110000*
Legal Description	*TR=33645 LOT 35
Legal Subdivision	33645
Legal Tract	33645
Legal Block	3
Legal Lot Number	35
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3006
Census Tract	408707

Owner

Source: Los Angeles County records, as of May 21, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on Record
Mailing Address	20633 E ALDA CT, WALNUT, CA 91789-3840
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 1, 1997 · Amount on Record
Deed Sale	Apr 1, 1997 · Amount on Record
Deed Document Number	1997491537
Prior Transfer Date	Feb 25, 1994
Prior Transfer Doc	0000554840
Record Updated	Sep 20, 2026

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	20633 E ALDA CT, DIAMOND BAR, CA 91789-3840
Transaction Type	Mortgage
Record Updated	May 5, 2021
Title Company	CLEARMARK TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	20633 E ALDA CT, WALNUT, CA 91789-3840

Mortgage

Document Number	0000676290
Date	Apr 28, 2021
Instrument	21-0676290

Lender

Name	STATEWIDE FUNDING INC
Type	Mortgage Company
Address	ONTARIO, CA 91764

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2051

Tax Assessment & Valuation

Source: Los Angeles County assessment roll, as of May 21, 2026

Property Jurisdictions

Type	Name
State	California
County	Los Angeles County
Municipality	Diamond Bar City
Unified School District	Walnut Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2025	$6,391.00 (+9.25%) Homeowner's exemption	$469,036 (+4.04%) Land $173,929 Building $295,107
2023	$5,850.00 (+2.13%) Homeowner's exemption	$450,825 Land $167,176 Building $283,649
2022	$5,728.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

Source: FEMA National Flood Hazard Layer, effective September 30, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	WALNUT VALLEY WATER DISTRICT serves 100,941 people · EPA ID CA1910234
Water Source	Purchased surface water from several systems
Last State Inspection	Jun 2023
Lead	Under 1 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 496 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
Spectrum Cable	1,000 / 1,000
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks, Verizon.

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