1128 Grubstake Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1128 Grubstake Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,771 sqft · built 1980
Lot Size	0.231 acres (10,062 sqft)
Owner	2 Individual Names on Record
Last Sale	$203,000 (Jul 1997)
Tax Bill	$4,566 (2025)
Deeds & Mortgages	Aug 2020 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8701-030-010`

Property Details

APN / Parcel Number

Primary APN	`8701-030-010`

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 1980
Effective Year Built	Effective 1980
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	10,062 sqft (0.231 acres)
Lot Dimensions	160 ft deep x 63 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1128 GRUBSTAKE DR
City	DIAMOND BAR
State	CA
Zip	91765-2345
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR18000*
Legal Description	*TR=35026 LOT 38
Legal Subdivision	35026
Legal Tract	35026
Legal Block	1
Legal Lot Number	38
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1006
Census Tract	403320

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 Individual Names on Record
Mailing Address	1128 GRUBSTAKE DR, DIAMOND BAR, CA 91765-2345
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 29, 1997 · Amount on Record
Deed Sale	Jul 29, 1997 · Amount on Record
Deed Document Number	19971152778
Last Transfer Date	Jun 30, 2016
Transfer Doc	0000825250
Record Updated	Oct 29, 2026

August 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	1128 GRUBSTAKE DR, DIAMOND BAR, CA 91765-2345
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	STEWART TITLE OF CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000927265
Date	Aug 11, 2020
Instrument	20-0927265

Lender

Name	E MORTGAGE CAPITAL INC
Type	Mortgage Company
Address	SANTA ANA, CA 92701

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2050

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	Diamond Bar City
Unified School District	Walnut Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$330,592 (+2%) Land $146,405 Building $184,187
2025	$4,566.00 (+8.95%) Homeowner's exemption	$324,111 (+4.04%) Land $143,535 Building $180,576
2023	$4,191.00 (+2.17%) Homeowner's exemption	$311,527 Land $137,962 Building $173,565
2022	$4,102.00

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	Moderate above 63% of the US · lower than 61% of California
Wildfire Likelihood	0.1% annual chance
Exposure	Direct burnable vegetation

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 344 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000

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

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