23509 Ridge Line Rd

Diamond Bar, CA 91765

$1,699,000
Price
69,190 / 1.59
Lot Size / Acres
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aerial view of a house with large windows and a yard
an aerial view of a city
a living room with furniture
a large white kitchen with sink and breakfast area
a bathroom with a toilet sink and mirror
a bathroom with a sink and mirror
a view of a dining room with furniture and a chandelier
a dining room with furniture and a large window
a dining room with furniture and a chandelier
a view of hall with furniture and windows
a dining room with furniture and a large window
a room with furniture and a flat screen tv
a room with furniture and screen
a living room with furniture
a backyard of a house with lots of green space
a backyard of a house with lots of green space and lake view
a outdoor view with sitting space
a view of tall trees with wooden fence
a aerial view of a house with swimming pool and garden

Description

Located in the prestigious 24hr guard-gated “The Country Estates” community, this beautiful proposed contemporary residence that is nestled in a highly sought-after location boasting panoramic city lights and mountain views, is graded and ready for construction to be customized and completed by the new owner. Proposed plans for a stunningly perfect contemporary resort-style estate boasting 5 bedroom suites, 7 bathrooms, and approx. 8,000 sqft of pristine and sumptuous living space situated on 1.59...Located in the prestigious 24hr guard-gated “The Country Estates” community, this beautiful proposed contemporary residence that is nestled in a highly sought-after location boasting panoramic city lights and mountain views, is graded and ready for construction to be customized and completed by the new owner. Proposed plans for a stunningly perfect contemporary resort-style estate boasting 5 bedroom suites, 7 bathrooms, and approx. 8,000 sqft of pristine and sumptuous living space situated on 1.59 sprawling acres, this sophisticated modern haven’s offerings would be unlike anything in the community. The immaculate grounds and bountiful amenities—including appealing water features at the elegant main entrance, two exterior balconies, dual professional offices, a lush 8-seat theater, & a gym, a luxurious family rm, living rm - ALL 3 rms with fully openable sliding doors. Incredible luxurious, entertaining backyard boasts a gorgeous infinity edge pool and spa overlooking stunning city light views, BBQ and fire pit areas, and a kids' play area. This estate will offer the possibilities for countless memories. Building plans also include a gourmet chef's kitchen and a service kitchen, featuring a sizable pantry. The upper floor will have the master suite with large his/her closets, enormously lush bathroom, and fully openable sliding doors that lead to an exterior deck. A junior master suite will also feature a walk-in closet and bathroom along with access to an exterior balcony through fully openable sliding doors. The estate will feature a 4-car garage. The existing proposed plans can be modified and changed to the buyers' desire! Don’t miss this chance to custom build your dream home on a fully graded and finished lot! Builder is renowned construction company, Primior JYZ.
  1. Listed by Juliet Chung • DRE #01887530 • Brokerage DRE #01930938 • Country Queen Real Estate • jules.chung@gmail.com
  2. Listed by Diana Cheng • DRE #00856071 • Brokerage DRE #01930938 • Country Queen Real Estate

Property Details for 23509 Ridge Line Road

View
Mountain(s), City Lights, Panoramic
Lot Size Source
Assessor
Assessor Parcel Number
8713-004-004
New Construction
Yes
Pool
No
View
Yes
View
Yes
Association
Yes
LISTING UPDATED: 04/24/2026 05:28 AM

Property Details for 23509 Ridge Line Road

StatusActive
MLS #TR25148967
Days on Market336
Taxes-
HOA Fees$350 / month
Condo/Co-op Fees-
Property TypeLand
MLS TypeLot/Land
Year Built-
Lot Size1.59 AC
CountyLos Angeles County
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Location

Listing Courtesy of Country Queen Real Estate, Juliet Chung, DRE #01887530; Country Queen Real Estate, Diana Cheng, DRE #00856071
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Building Information for 23509 Ridge Line Road

Lot Size1.59 AC

Payment Calculator

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$10,061 per month

30 year fixed, 6.36% Interest

Principal and Interest

$8,466

Property Taxes

$1,245

HOA Dues

$350

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Property Information for 23509 Ridge Line Road

Income / Expense / Tax Details
Income Details
  • Current Financing: Conventional
Tax / Assessment Info
  • Tax Tract Number: 30091
  • Tax Census Tract: 4033.24
  • CFD/Mello-Roos Fee: $0
  • Tax Lot: 50
Community / Development
Community / Development
  • Assessments: Special Assessments, Buyer to Verify
  • Community Features: Horse Trails, Suburban, Park
  • Complex Name: DBCEA
  • Complex Features: Horse Trails
  • Association Name: DBCEA
  • Association Phone: (909) 861-4114
Property / Structure Info
Exterior Features
  • Fence: Vinyl, Wrought Iron
  • Fencing: Vinyl, Excellent Condition, Wrought Iron
  • View Description: City Lights, Panoramic
Distance To
  • Distance To Water: 1
Land/Lot Info
  • Sign on Property: No
  • Lot Features: Lot Over 40000 Sqft, Landscaped, Sprinkler System
  • Current Use: Residential
  • Additional Property Use: Residential
  • Possible Use: Residential
  • Land Lease: No
  • Land Lease Type: Fee
  • Road Surface Type: Paved
  • Water: Public
  • Sewer: Public Sewer
  • Utilities: Sewer Connected
  • Electric: Sewer Connected
  • Water Source: Public
Parking Info
  • Carport Spaces: 0
Property / Structure Info
  • Residential Styles: Lots/Land

Property History for 23509 Ridge Line Road

DateEvent & SourcePriceAppreciation
Jul 2, 2025

Listed (Active)

SDMLS #TR25148967

$1,699,000—
Jul 2, 2025

Listed (Active)

CRMLS #TR25148967

$1,699,000—
Jul 2, 2025

Listed (Active)

CLAW #TR25148967MR

$1,699,000—
DateEvent & SourcePrice
07/02/2025

Listed (Active)

SDMLS #TR25148967

$1,699,000
07/02/2025

Listed (Active)

CRMLS #TR25148967

$1,699,000
07/02/2025

Listed (Active)

CLAW #TR25148967MR

$1,699,000

For completeness, we often displays two records for one sale: the MLS record and the public record.

Public Records for 23509 Ridge Line Road

Taxable ValueLand$1,223,807Additions-Total$1,223,807
Tax Record2025$14,941 ($1,245 / month)
Home Facts
Beds4Total Finished SqFt3,220 SqFtAbove Grade Finished SqFt3,220 SqFtLot Size69,190 SqFtStyleResidentialYear Built1975ZoningLCR140000*CountyLOS ANGELESAPN8713-004-004

Schools near 23509 Ridge Line Road

This home is within Walnut Valley Unified School District.
Rating
School
Type
Grades
Distance
Evergreen Elementary School
Public - K to 5
Chaparral Middle School
Public - 6 to 8
Diamond Bar High School
Public - 9 to 12
Ron Hockwalt Academies (Continuation) School
Public - 9 to 12
Rating
School
Distance
Evergreen Elementary School
PublicK to 5

Chaparral Middle School
Public6 to 8

Diamond Bar High School
Public9 to 12

Ron Hockwalt Academies (Continuation) School
Public9 to 12

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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More information about 23509 Ridge Line Road, Diamond Bar, CA 91765

23509 Ridge Line Road is a 1.59 ac of land for sale in Diamond Bar, CA 91765. This property was listed for sale on July 2, 2025 by Country Queen Real Estate, it's currently listed at $1,699,000. It has been on the market for a total of 336 days and was last sold on October 23, 2015. This listing's school district is Walnut Valley Unified School District. Nearby schools include Evergreen Elementary School, Chaparral Middle School and Diamond Bar High School. 23509 Ridge Line Road is a 0-bed, 0-bath, 1.59 ac of land on a 69,190 sq. ft. / 1.59 acres lot.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of Country Queen Real Estate, Juliet Chung, DRE #01887530; Country Queen Real Estate, Diana Cheng, DRE #00856071

Based on information from one of the following Multiple Listing Services: CRMLS, CLAW, I-Tech, ROWMLS, GPSMLS, SDMLS, VCRDS/PFAR, Idyllwild Association of Realtors, Ojai Valley Board of REALTORS and/or AVMLS. Information being provided is for the visitor’s personal, noncommercial use and may not be used for any purpose other than to identify prospective properties visitor may be interested in purchasing. The data contained herein is copyrighted by CRMLS, CLAW, I-Tech, ROWMLS, GPSMLS, SDMLS, VCRDS/PFAR, Idyllwild Association of Realtors, Ojai Valley Board of REALTORS and/or AVMLS is protected by all applicable copyright laws. Any dissemination of this information is in violation of copyright laws and is strictly prohibited. Property information referenced on this web site comes from the Internet Data Exchange (IDX) program of the MLS. This web site may reference real estate listing(s) held by a brokerage firm other than the broker and/or agent who owns this web site. For the avoidance of doubt, the accuracy of all information, regardless of source, is deemed reliable but not guaranteed and should be personally verified through personal inspection by and/or with the appropriate professionals.