527 Castlehill Dr, Walnut, CA 91789 Property Records

Los Angeles County property record for 527 Castlehill Dr, Walnut, CA 91789

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,376 sqft · built 1980
Lot Size	0.338 acres (14,716 sqft)
Owner	2 Company Names on Record
Tax Bill	$4,609 (2025)
Deeds & Mortgages	Apr 2026 Sale
Flood Zone	Zone X (minimal risk)
APN	`8722-013-037`

Property Details

APN / Parcel Number

Primary APN	`8722-013-037`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	11 Rooms
Stories	2 Stories
Building Area	2,376 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1980
Effective Year Built	Effective 1980
Architectural Style	Conventional
Construction Type	Wood
Roof Type	Hip
Roof Material	Composition Shingle
Lot Area	14,716 sqft (0.338 acres)
Lot Dimensions	150 ft deep x 105 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	527 CASTLEHILL DR
City	WALNUT
State	CA
Zip	91789-2624
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	WAR18500RU
Legal Description	*TR=PARCEL MAP AS PER BK 51 PG 28 OF P M LOT 2
Legal Subdivision	PARCEL MAP NO 4106 AS PER MAP FILED IN
Legal Block	2
Legal Lot Number	2
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2001
Census Tract	403401

Owner

Source: Los Angeles County records, as of August 25, 2026

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

Owner of Record	2 Company Names on Record
Mailing Address	527 CASTLEHILL DR, WALNUT, CA 91789-2624
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Transfer Date	Mar 29, 2026
Transfer Doc	0000273620
Record Updated	Oct 29, 2026

April 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Apr 17, 2026
Property Address	527 CASTLEHILL DR, WALNUT, CA 91789-2624
Document Number	0000273620
Instrument Date	Mar 29, 2026
Instrument	2026273620
Transaction Type	Transfer
Record Updated	Aug 27, 2026
Title Company	NONE LISTED ON DOCUMENT

Transaction

Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	527 CASTLEHILL DR, WALNUT, CA 91789-2624

Tax Assessment & Valuation

Source: Los Angeles County assessment roll, as of August 25, 2026

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$338,088 (+2%) Land $63,376 Building $274,712
2025	$4,609.00 (+7.94%) Homeowner's exemption	$331,460 (+4.04%) Land $62,134 Building $269,326
2024	$4,270.00 (+3.64%)
2023	$4,120.00 (+3.39%) Homeowner's exemption	$318,591 Land $59,722 Building $258,869
2022	$3,985.00

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	Low lower than 99.1% of the US · lower than 99.2% of California
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond 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 322 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
Starlink Satellite	280 / 30
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks, Verizon.

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