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633 Mount St, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 633 Mount St, Diamond Bar, CA 91765 · Last verified August 2026

Property Highlights

Property TypeResidential > Single Family > Home
Bedrooms4 Beds
Bathrooms3 Baths
Year BuiltBuilt 1978
Square Footage2,454 sqft Living Area
Lot Size9,226 sqft (0.212 acres)
OccupancyOwner Occupied
Last Sale$720,000 (2019)
Tax Bill$10,913.00 (2025)

Property Details

APN / Parcel Number

Primary APN8717-021-017

Interior

Bedrooms4 Beds
Full Baths3 Baths
Total Rooms10 Rooms
Building Area2,454 sqft Living Area
Stories1 Stories
FireplaceFireplace
Fireplaces1 Fireplaces

Exterior

Year BuiltBuilt 1972
Effective Year BuiltEffective 1978
Architectural StyleConventional Style
Exterior MaterialStucco Exterior
Construction TypeWood Construction
Roof ConstructionGable Roof Construction
Roof MaterialWood Shingle Roof
Lot Area9,226 sqft (0.212 acres)
Depth X Width142 ft x 66 ft Depth x Width
Garage TypeAttached Garage

Utilities and HVAC

Cooling SystemCentral Cooling
Heating SystemCentral Heating
Water SourceCommercial Water Source

Location & Zoning

Street Address633 MOUNT ST
CityDIAMOND BAR
StateCA
Zip91765-1939
Property UsageResidential Property Usage
TypeResidential > Single Family > Home
Legal DescriptionTRACT NO 31139 LOT 17
Legal Subdivision31139
Legal Tract31139
Legal Block2
Legal Lot Number17
JurisdictionLOS ANGELES CA
Minor Civil DivisionEAST SAN GABRIEL VALLEY
Census Blockgroup2
Census Block2001
Census Tract403319

Owner

Source: Los Angeles County records · APN 8717-021-017

Assessment roll updated May 21, 2026 · Last verified August 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record2 Company Names on File
Mailing Address633 MOUNT ST, DIAMOND BAR, CA 91765-1939
OccupancyOwner Occupied
Owner TypeOwner is a Company
VestingOwner is a Trust, Trust

Deeds, Mortgages & Sale History

DateDocument
Jan 24, 2023Intrafamily Transfer, Transfer
Jul 07, 2020Quit Claim Deed, Transfer
CAPITALEND HM LOANS
Oct 20, 2020Quit Claim Deed, Transfer
NOT AVAILABLE
Jun 14, 2019Grant Deed, Transfer · Conventional Mortgage
CAPITALEND HM LOANS

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleJun 14, 2019 · Amount on Record
Deed SaleJun 14, 2019 · Amount on Record
Prior SaleNov 05, 2002 · Amount on Record
Deed Doc Number2019566990
Last Transfer DateJan 18, 2023
Transfer Doc0000048436
Record RefreshedSep 20, 2026

January 2023: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionLOS ANGELES CA
Recording DateJan 24, 2023
Property Address633 MOUNT ST, DIAMOND BAR, CA 91765-1939
Document Number0000048436
Map ReferenceMB 817 PG 38-41
Instrument DateJan 18, 2023
Instrument23-0048436
Transaction TypeTransfer
Record UpdatedJun 07, 2023

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Interfamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address633 MOUNT ST, DIAMOND BAR, CA 91765-1939

July 2020: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionLOS ANGELES CA
Recording DateJul 07, 2020
Property Address633 MOUNT ST, DIAMOND BAR, CA 91765-1939
Document Number0000741501
Instrument DateJun 27, 2020
Instrument741501
Transaction TypeTransfer
Record UpdatedJul 15, 2020
Title CompanyWESTMINSTER TITLE COMPANY INC, WESTMINSTER TITLE CO INC

Transaction

Tax$0.00
Amount AccuracyFull Value
Additional
  • Quitclaim Document
  • Interfamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipTenants In Common
Address633 MOUNT ST DIAMOND BAR CA 917651939, DIAMOND BAR, CA 91765-1939

Mortgage

Document Number741502
DateJul 07, 2020
Instrument741502
Lender
NameCAPITALEND HM LOANS
AddressSANTA ANA, CA 92707
Agreement
AmountAmount Recorded
Term360 Months
DueJul 06, 2050

October 2020: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionLOS ANGELES CA
Recording DateOct 20, 2020
Property Address633 MOUNT ST, DIAMOND BAR, CA 91765-1939
Document Number0001305245
Instrument DateJun 25, 2020
Instrument1305245
Transaction TypeTransfer
Record UpdatedNov 23, 2020
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Quitclaim Document

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address633 MOUNT ST DIAMOND BAR CA 917651939, DIAMOND BAR, CA 91765-1939

June 2019: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionLOS ANGELES CA
Recording DateJun 14, 2019
Property Address633 MOUNT ST, DIAMOND BAR, CA 91765-1939
Document Number0000566990
Instrument DateMay 21, 2019
Instrument566990
Transaction TypeTransfer
Record UpdatedJun 20, 2019
Title CompanyWFG NATIONAL TITLE COMPANY/CA, WFG NAT'L TITLE CO/CA

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$792.00
Amount AccuracyFull Value
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipTenants In Common
Address633 MOUNT ST DIAMOND BAR CA 917651939, DIAMOND BAR, CA 91765-1939

Mortgage

Document Number566991
DateJun 14, 2019
Instrument566991
Lender
NameCAPITALEND HM LOANS
AddressSANTA ANA, CA 92707
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term360 Months
DueJun 13, 2049

Tax Assessment & Valuation

Source: Los Angeles County records · Assessment roll updated May 21, 2026 · Last verified August 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyLos Angeles County
MunicipalityDiamond Bar City
Unified School DistrictPomona Unified School District (KG - 12)

Tax Bill & Assessment History

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

YearTax BillAssessed Value
2025$10,913.00 (+11.29%) Homeowner's exemption$803,169 (+4.04%) Land $560,881 Building $242,288
2023$9,806.00 (+1.56%) Homeowner's exemption$771,983 Land $539,102 Building $232,881
2022$9,655.00

Flood & Wildfire

633 Mount St is in FEMA Zone X, outside the Special Flood Hazard Area, with no wildfire exposure.

Flood

Source: FEMA National Flood Hazard Layer · Los Angeles County (06037C), updated September 30, 2026

FEMA Flood ZoneZone X
minimal flood hazard · outside the 0.2% annual chance floodplain
Special Flood Hazard AreaNo

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020

Wildfire Risk to HomesNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach of burnable land

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

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