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21002 Cornerstone Drive
Walnut CA 91789 US

$959,000

Active Listing ID CV26038033
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4 bed
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3.00 Bath (3 Full)
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Lot: 17,474.00 Square Feet
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Condominium

$959,000

Active Listing ID CV26038033
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21002 Cornerstone Drive All information provided is believed to be reliable but is not guaranteed and should be independently verified by buyers and their representatives. Buyers are advised to conduct all necessary inspections, investigations, and due diligence to satisfy themselves with respect to the property and the transaction as a whole. The seller reserves the right to select all escrow, title, and transaction-related service providers. Neither the Seller, Listing Office, nor Listing Agent makes any representation or warranty, expressed or implied, regarding the accuracy or completeness of the information provided. Buyer may be required to cross-qualify with the seller’s preferred lender. To ensure timely review, please submit complete offers including the RPA, a current pre-approval letter, FICO scores, and proof of funds to oliver@oliverweigroup.com. Kindly text (909) 377-6789 to confirm receipt once submitted. We appreciate your professionalism and look forward to a smooth and well-coordinated escrow.

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Property Features

  • Facts
  • Lot Size: 17,474.00 Square Feet
  • Property Type: Residential
  • Property Sub-type: Condominium
  • Features
  • Full Bathrooms: 3
  • Cooling System: Central Air
  • Exterior Finish: Community Features Included: Park
  • Heating Fuels: Central

Property

  • propertytype: Residential
  • propertysubtype: Condominium
  • listprice: 959000
  • unparsedaddress: 21002 Cornerstone Drive
  • postalcity: Walnut
  • stateorprovince: CA
  • country: US
  • postalcode: 91789
  • bathroomsfull: 3
  • bathroomshalf: 0
  • bathroomsonequarter: 0
  • bathroomsthreequarter: 0
  • lotsizeacres: 0.401147842056933
  • lotsizeunits: Square Feet
  • lotsizearea: 17474
  • livingarea: 1800
  • livingareaunits: Square Feet
  • listagentfullname: Oliver Wei
  • listagentemail: oliver@oliverweigroup.com
  • listagentkey: 3yd-MRMLSCA-CV37593
  • listagentmlsid: CV37593
  • listagentpreferredphone: 9093776789
  • listagentofficephone: 6262391700
  • listofficekey: 3yd-MRMLSCA-50813
  • listagentstatelicense: 01980763
  • listofficemlsid: 50813
  • disclaimer: Copyright © 2026 California Regional Multiple Listing Service, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
  • sourcesystemid: MRMLSCA
  • yearbuilt: 2018
  • listingcontractdate: 2026-02-25
  • listagenturl: https://www.oliverweigroup.com/
  • countyorparish: Los Angeles
  • parcelnumber: 8720047083
  • elementaryschooldistrict: Walnut Valley Unified
  • middleorjuniorschooldistrict: Walnut Valley Unified
  • highschooldistrict: Walnut Valley Unified
  • cooling: Central Air
  • heating: Central
  • numberofunitstotal: 143
  • fireplaceyn: False
  • transactiontype: ForSale
  • storiestotal: 3
  • parkingtotal: 2
  • view: City
  • waterfrontyn: False
  • franchiseaffiliation: HomeSmart International
  • exteriorfeatures: Community Features Included: Park
  • architecturalstyle: Other
  • rooms: Bathroom 1, Bathroom 2, Bathroom 3, Bedroom 1, Bedroom 2, Bedroom 3, Bedroom 4
  • dock: False
  • poolprivateyn: False
  • spayn: False
  • internetaddressdisplayyn: True
  • internetautomatedvaluationdisplayyn: True
  • internetconsumercommentyn: True
  • openhouse: { "AppointmentRequiredYN": false, "ListingKey": "3yd-MRMLSCA-CV26038033", "OpenHouseEndTime": "2026-02-28T23:30:00+00:00", "OpenHouseId": "CV26038033", "OpenHouseRemarks": null, "OpenHouseStartTime": "2026-02-28T21:30:00+00:00", "OpenHouseType": null, "VirtualOpenHouseURL": null }, { "AppointmentRequiredYN": false, "ListingKey": "3yd-MRMLSCA-CV26038033", "OpenHouseEndTime": "2026-03-01T23:30:00+00:00", "OpenHouseId": "CV26038033", "OpenHouseRemarks": "", "OpenHouseStartTime": "2026-03-01T21:30:00+00:00", "OpenHouseType": null, "VirtualOpenHouseURL": null }
  • customfields: {"AdditionalInformation":{}, "AlternatePrices":[], "BrokerName":"HomeSmart Professional Partners Realty", "BuilderEmail":null, "BuilderFax":null, "BuilderPhone":null, "City":null, "Country":null, "Expenses":[{"ExpenseCategory":"Home Owner Assessments Fee", "ExpenseFrequency":"Monthly", "ExpenseValue":262}], "GeocodeOptions":null, "LeadRoutingEmail":"oliver@oliverweigroup.com", "ListBrokerageCity":"Monrovia", "ListBrokerageCountry":"US", "ListBrokerageEmail":"mhischier@hs2move.com", "ListBrokerageLogoUrl":"http://brokerlogos.listhub.net/110/267077/20140527172600882.png", "ListBrokerageName":"HomeSmart Professional Partners Realty", "ListBrokeragePhone":"(626) 239-1695", "ListBrokeragePostalCode":"91016", "ListBrokerageStateOrProvince":"CA", "ListBrokerageUnitNumber":null, "ListBrokerageUnparsedAddress":"134 W. Olive Ave.", "ListBrokerageWebsiteUrl":"http://homesmartprofessionalpartners.com/", "ListOfficeAddress1":"515 S Myrtle Ave Ste B", "ListOfficeAddress2":null, "ListOfficeBrokerMlsId":"SSCHULI3", "ListOfficeCity":"Monrovia", "ListOfficeCountry":"US", "ListOfficeEmail":"Lisa.Schulz@homesmartegr.com", "ListOfficePostalCode":"91016", "ListOfficeStateOrProvince":"CA", "ListPriceCurrencyType":"USD", "ListingTitle":"Condominium - Walnut, CA", "ListingURL":"https://www.realtor.com/realestateandhomes-detail/21002-Cornerstone-Dr_Walnut_CA_91789_M10085-93884?f=listhub&s=MRMLSCA&m=CV26038033&c=rexren", "MLSModificationTimestamp":"2026-02-25T00:30:26Z", "Neighborhoods":[], "PostalCode":null, "RawPropertySubType":"Condominium", "RawPropertyType":"Residential", "RoomCount":null, "StateOrProvince":null, "Taxes":[], "UnitNumber":null, "UnparsedAddress":null}
Listing Changed: 2/26/2026 5:08:59 AM GMT
Source Updated Date: 2/26/2026 12:48:25 PM GMT

Courtesy of: Oliver Wei, HomeSmart, Evergreen Realty, oliver@oliverweigroup.com

Copyright © 2026 California Regional Multiple Listing Service, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.