21017 Granite Wells Dr, Walnut, CA 91789 Property Records

Los Angeles County property record for 21017 Granite Wells Dr, Walnut, CA 91789

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,220 sqft · built 1988
Lot Size	0.257 acres (11,177 sqft)
Owner	2 Trust Names on File
Tax Bill	$7,990 (2025)
Deeds & Mortgages	Feb 2021 Transfer Feb 2021 Mortgage
Flood Zone	Zone D (undetermined)
APN	`8710-021-036`

Property Details

APN / Parcel Number

Primary APN	`8710-021-036`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Building Area	2,220 sqft Living Area

Exterior

Year Built	Built 1988
Effective Year Built	Effective 1988
Construction Type	Wood
Lot Area	11,177 sqft (0.257 acres)
Lot Dimensions	177 ft deep x 65 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	21017 GRANITE WELLS DR
City	WALNUT
State	CA
Zip	91789-1361
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	WASP1*
Legal Description	TR=44019 LOT 57
Legal Subdivision	44019
Legal Tract	44019
Legal Block	1
Legal Lot Number	57
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1020
Census Tract	403409

Owner

21017 Granite Wells Dr is owner-occupied and held in a trust since January 2021.

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

Owner of Record	2 Trust Names on File
Mailing Address	21017 GRANITE WELLS DR, WALNUT, CA 91789-1361
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Feb 9, 2021	Intrafamily Transfer, Transfer UNISOURCE
Feb 9, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage NETWORK CAPITAL FUNDING CORP

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Transfer Date	Jan 11, 2021
Transfer Doc	0000221713
Record Updated	Oct 29, 2026

February 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Feb 9, 2021
Property Address	21017 GRANITE WELLS DR, WALNUT, CA 91789-1361
Document Number	0000221713
Map Reference	MB 1051 PG 53-61
Instrument Date	Jan 11, 2021
Instrument	21-0221713
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	UNISOURCE

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	21017 GRANITE WELLS DR, WALNUT, CA 91789-1361

February 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Feb 9, 2021
Property Address	21017 GRANITE WELLS DR, WALNUT, CA 91789-1361
Document Number	0000221711
Map Reference	MB 1051 PG 53-61
Instrument Date	Jan 11, 2021
Instrument	21-0221711
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	UNISOURCE

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	21017 GRANITE WELLS DR, WALNUT, CA 91789-1361

Mortgage

Document Number	0000221712
Date	Feb 9, 2021
Instrument	21-0221712

Lender

Name	NETWORK CAPITAL FUNDING CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Feb 1, 2051

Tax Assessment & Valuation

The 2025 property tax bill for 21017 Granite Wells Dr was $7,990 with a homeowner's exemption.

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		$572,476 (+2%) Land $189,666 Building $382,810
2025	$7,990.00 Homeowner's exemption	$561,252 Land $185,948 Building $375,304
2023	$7,402.00 (+1.93%) Homeowner's exemption	$539,460 Land $178,728 Building $360,732
2022	$7,262.00

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

Flood

FEMA maps place 21017 Granite Wells Dr in Zone D, where flood risk has not been studied.

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

FEMA Flood Zone	Zone D undetermined · not studied
Flood Insurance Requirement	Not required lenders may require it

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

Wildfire

Wildfire risk around 21017 Granite Wells Dr is low, with a 0.02% annual chance of wildfire.

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

Wildfire Risk	Low lower than 94% of the US · lower than 96% of California
Wildfire Likelihood	0.02% 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	GSWC-SAN DIMAS private · serves 56,564 people · EPA ID CA1910142
Water Source	Purchased surface water from several systems
Last State Inspection	May 2025
Lead	2 ppb (2024–2026) 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 300 locations within half a mile, as of December 31, 2025

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

May also be available: AT&T, Frontier, GeoLinks, Verizon.

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