1156 Grubstake Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1156 Grubstake Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,344 sqft · built 1980
Lot Size	0.217 acres (9,429 sqft)
Owner	2 Individual Names on File
Last Sale	$1,070,000 (Sep 2023)
Tax Bill	$13,587 (2025)
Deeds & Mortgages	Sep 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8701-030-015`

Property Details

APN / Parcel Number

Primary APN	`8701-030-015`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	2,344 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	9,429 sqft (0.217 acres)
Lot Dimensions	125 ft deep x 76 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1156 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 43
Legal Subdivision	35026
Legal Tract	35026
Legal Block	1
Legal Lot Number	43
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1006
Census Tract	403320

Owner

1156 Grubstake Dr is owned and occupied by two individuals who bought it in September 2023.

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

Owner of Record	2 Individual Names on File
Mailing Address	1156 GRUBSTAKE DR, DIAMOND BAR, CA 91765-2345
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

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

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 5, 2023 · Amount on File
Deed Sale	Sep 5, 2023 · Amount on File
Prior Sale	Aug 28, 1998 · Amount on File
Deed Document Number	2023589330
Prior Transfer Date	Jun 10, 1996
Prior Transfer Doc	0001046238
Record Updated	Oct 29, 2026

September 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Sep 5, 2023
Property Address	1156 GRUBSTAKE DR, DIAMOND BAR, CA 91765-2345
Document Number	0000589330
Map Reference	MB 919 PG 31-37
Instrument Date	Aug 24, 2023
Instrument	23-0589330
Transaction Type	Transfer
Record Updated	Sep 18, 2023
Title Company	E-CHICAGO TITLE, CHICAGO TITLE

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	Joint Tenants
Address	1156 GRUBSTAKE DR, DIAMOND BAR, CA 91765-2345

Mortgage

Document Number	0000589331
Date	Sep 5, 2023
Instrument	23-0589331

Lender

Name	EAST WEST BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Sep 1, 2053

Interest

Rate Type	Adjustable Rate
Rate	7%
Type Change Date	Sep 1, 2033
Change Frequency	Annually
Min Rate At Change	5%
Max Rate At Change	9%
Index	1-Year T-Bill
Max Rate	13%

Tax Assessment & Valuation

The 2025 property tax bill for 1156 Grubstake Dr was $13,587 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	Diamond Bar City
Unified School District	Walnut Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,113,227 (+2%) Land $742,533 Building $370,694
2025	$13,587.00 Homeowner's exemption	$1,091,400 Land $727,974 Building $363,426
2023	$5,213.00 (+2.16%) Homeowner's exemption	$399,284 Land $160,011 Building $239,273
2022	$5,103.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA maps place 1156 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 1156 Grubstake Dr is moderate, ranking above 63% of the US, with a 0.1% annual chance of 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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