1109 Grubstake Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1109 Grubstake Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,771 sqft · built 1979
Lot Size	0.19 acres (8,291 sqft)
Owner	2 Trust Names on File
Last Sale	$810,000 (Nov 2020)
Tax Bill	$11,000 (2025)
Deeds & Mortgages	Nov 2025 Transfer Nov 2020 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8701-029-021`

Property Details

APN / Parcel Number

Primary APN	`8701-029-021`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	1,771 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1979
Effective Year Built	Effective 1979
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	8,291 sqft (0.19 acres)
Lot Dimensions	116 ft deep x 71 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1109 GRUBSTAKE DR
City	DIAMOND BAR
State	CA
Zip	91765-2346
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCC3-R1800
Legal Description	*TR=35026 LOT 21
Legal Subdivision	35026
Legal Tract	35026
Legal Block	1
Legal Lot Number	21
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1008
Census Tract	403320

Owner

1109 Grubstake Dr is owner-occupied and held in a trust since November 2020.

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

Owner of Record	2 Trust Names on File
Mailing Address	1109 GRUBSTAKE DR, DIAMOND BAR, CA 91765-2346
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
Nov 18, 2025	Intrafamily Transfer, Transfer
Nov 20, 2020	Grant Deed, Transfer · Conventional Mortgage LOANDEPOT.COM LLC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 20, 2020 · Amount on File
Deed Sale	Nov 20, 2020 · Amount on File
Prior Sale	Sep 16, 2005 · Amount on File
Deed Document Number	20201493894
Prior Transfer Date	Nov 18, 1993
Prior Transfer Doc	0002353459
Record Updated	Oct 29, 2026

November 2025: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Nov 18, 2025
Property Address	1109 GRUBSTAKE DR, DIAMOND BAR, CA 91765-2346
Document Number	0000811621
Map Reference	MB 919 PG 31-37
Instrument Date	Nov 8, 2025
Instrument	25-0811621
Transaction Type	Transfer
Record Updated	Dec 4, 2025

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	1109 GRUBSTAKE DR, DIAMOND BAR, CA 91765-2346

November 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Nov 20, 2020
Property Address	1109 GRUBSTAKE DR, DIAMOND BAR, CA 91765-2346
Document Number	0001493894
Map Reference	MB 919 PG 31-37
Instrument Date	Nov 9, 2020
Instrument	20-1493894
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	WFG NATIONAL TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	1109 GRUBSTAKE DR, DIAMOND BAR, CA 91765-2346

Mortgage

Document Number	0001493895
Date	Nov 20, 2020
Instrument	20-1493895

Lender

Name	LOANDEPOT.COM LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Dec 1, 2050

Tax Assessment & Valuation

The 2025 property tax bill for 1109 Grubstake Dr was $11,000.

Source: Los Angeles County assessment roll, as of August 25, 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
2026		$894,301 (+2%) Land $603,047 Building $291,254
2025	$11,000.00 Homeowner's exemption	$876,767 Land $591,223 Building $285,544
2023	$10,261.00 (+2.14%) Homeowner's exemption	$842,723 Land $568,266 Building $274,457
2022	$10,046.00

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

Flood

FEMA maps place 1109 Grubstake Dr in Zone X, an area of minimal flood risk.

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

Wildfire risk around 1109 Grubstake Dr is low, with less than a 0.01% annual chance of wildfire.

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

Wildfire Risk	Low lower than 95% of the US · lower than 97% 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 464 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
Starlink Satellite	280 / 30
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Frontier, GeoLinks.

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