630 Mount St, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 630 Mount St, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 1,811 sqft · built 1972
Lot Size	0.181 acres (7,895 sqft)
Owner	2 Individual Names on Record
Last Sale	$970,000 (Jun 2022)
Tax Bill	$13,631 (2025)
Deeds & Mortgages	Jun 2022 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8717-021-022`

Property Details

APN / Parcel Number

Primary APN	`8717-021-022`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	13 Rooms
Stories	2 Stories
Building Area	1,811 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1972
Effective Year Built	Effective 1972
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	7,895 sqft (0.181 acres)
Lot Dimensions	126 ft deep x 61 ft wide
Garage Type	Attached

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Water Source	Commercial

Location & Zoning

Street Address	630 MOUNT ST
City	DIAMOND BAR
State	CA
Zip	91765-1938
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR118000*
Legal Description	TRACT NO 31139 LOT 22
Legal Subdivision	31139
Legal Tract	31139
Legal Block	2
Legal Lot Number	22
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2001
Census Tract	403319

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	630 MOUNT ST, DIAMOND BAR, CA 91765-1938
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 14, 2022 · Amount on Record
Deed Sale	Jun 14, 2022 · Amount on Record
Deed Document Number	2022627276
Prior Transfer Date	Nov 18, 2004
Prior Transfer Doc	0003068991
Record Updated	Oct 29, 2026

June 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jun 14, 2022
Property Address	630 MOUNT ST, DIAMOND BAR, CA 91765-1938
Document Number	0000627276
Map Reference	MB 817 PG 38-41
Instrument Date	Apr 18, 2022
Instrument	22-0627276
Transaction Type	Transfer
Record Updated	Jun 27, 2022
Title Company	WFG TITLE COMPANY/CA, WFG TITLE COMPANY OF CA

Transaction

Amount	Amount Recorded
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	630 MOUNT ST, DIAMOND BAR, CA 91765-1938

Mortgage

Document Number	0000627277
Date	Jun 14, 2022
Instrument	22-0627277

Lender

Name	NAVY FCU
Type	Credit Union

Agreement

Type	VA Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jul 1, 2052

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	Pomona Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,049,956 (+2%) Land $796,344 Building $253,612
2025	$13,631.00 (+10.77%) Homeowner's exemption	$1,029,370 (+4.04%) Land $780,730 Building $248,640
2023	$12,306.00 (+134.94%) Homeowner's exemption	$989,400 Land $750,414 Building $238,986
2022	$5,238.00

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 46% of the US · lower than 72% of California
Wildfire Likelihood	0.08% 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 215 locations within half a mile, as of December 31, 2025

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

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

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