23509 Ridge Line Rd
Diamond Bar, CA 91765

$1,699,000

Price

69,190 / 1.59

Lot Size / Acres

23509 Ridge Line Road Diamond Bar, CA 91765 - Photo 1 of 22

Proposed master bedroom's over-sized luxurious walk-in closet with built in shelving and central marble-top island dresser

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.

Listed by Juliet Chung • DRE #01887530 • Brokerage DRE #01930938 • Country Queen Real Estate • 909-374-0299
Listed by Diana Cheng • DRE #00856071 • Brokerage DRE #01930938 • Country Queen Real Estate

Property Details for 23509 Ridge Line Road

View

City Lights, Mountain(s), Panoramic

Lot Size Source

Assessor

Assessor Parcel Number

8713-004-004

New Construction

Yes

Pool

View

Yes

View

Yes

Association

Yes

LISTING UPDATED: 12/22/2025 01:26 AM

Property Details for 23509 Ridge Line Road

Status	Active
MLS #	TR25148967
Days on Market	175
Taxes	-
HOA Fees	$308 / month
Condo/Co-op Fees	-
Compass Type	Land
MLS Type	Lot/Land
Year Built	-
Lot Size	1.59 AC
County	Los Angeles County

Location

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

Add your commute

Building Information for 23509 Ridge Line Road

Lot Size1.59 AC

Payment Calculator

$9,948 per month

30 year fixed, 6.28% Interest

Principal and Interest

$8,395

Property Taxes

$1,245

HOA Dues

$308

The Payment Calculator is for illustrative purposes only.

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

Assessments: Special Assessments, Buyer to Verify
Community Features: Horse Trails, Park, Suburban

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: Excellent Condition, Vinyl, Wrought Iron

View Description: City Lights, Panoramic

Distance To

Distance To Water: 1

Land/Lot Info

Sign on Property: No
Lot Features: Landscaped, Lot Over 40000 Sqft, 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

Date	Event & Source	Price	Appreciation
Jul 2, 2025	Listed (Active) CRMLS #TR25148967	$1,699,000	—
Jul 2, 2025	Listed (Active) SDMLS #TR25148967	$1,699,000	—
Jul 2, 2025	Listed (Active) CLAW #TR25148967MR	$1,699,000	—
Jan 1, 2025	Expired CRMLS #TR24054787		—
Dec 31, 2024	Expired CLAW #TR24054787MR	$1,988,000	—
Aug 22, 2024	Withdrawn / Cancelled CRMLS #TR24054787	$1,988,000	—
Aug 22, 2024	Expired SDMLS #TR24054787		—
Aug 22, 2024	Withdrawn / Cancelled SDMLS #TR24054787		—
Mar 19, 2024	Listed (Active) SDMLS #TR24054787	$1,988,000	—
Mar 19, 2024	Listed (Active) CLAW #TR24054787MR	$1,988,000	—
Mar 19, 2024	Listed (Active) CRMLS #TR24054787	$1,988,000	—
Mar 7, 2024	Withdrawn / Cancelled CRMLS #TR23019209	$1,999,000	—
Mar 1, 2024	Expired CRMLS #TR23027655		—
Feb 29, 2024	Expired CLAW #TR23027655MR	$1,999,000	—
Aug 12, 2023	Withdrawn / Cancelled CRMLS #TR23027655		—
Aug 12, 2023	Expired SDMLS #TR23027655	$1,999,000	—
Aug 12, 2023	Withdrawn / Cancelled SDMLS #TR23019209		—
Aug 12, 2023	Withdrawn / Cancelled CLAW #TR23027655MR		—
Aug 12, 2023	Withdrawn / Cancelled CLAW #TR23019209MR		—
Feb 16, 2023	Listed (Active) CRMLS #TR23027655	$1,999,000	—
Feb 14, 2023	Listed (Active) CLAW #TR23027655MR	$1,999,000	—
Feb 14, 2023	Listed (Active) SDMLS #TR23027655	$1,999,000	—
Feb 4, 2023	Listed (Active) SDMLS #TR23019209	$1,999,000	—
Feb 4, 2023	Listed (Active) SDMLS #TR23019209		—
Feb 4, 2023	Listed (Active) CRMLS #TR23019209	$1,999,000	—
Feb 4, 2023	Listed (Active) CLAW #TR23019209MR	$1,999,000	—
Apr 29, 2022	Withdrawn / Cancelled CRMLS #TR21167381	$2,595,000	—
Apr 29, 2022	Withdrawn / Cancelled SDMLS #TR21167381		—
Apr 29, 2022	Withdrawn / Cancelled CLAW #TR21167381MR		—
Feb 4, 2022	Price Change SDMLS #TR21167381	$2,595,000	—
Feb 3, 2022	Price Change CLAW #TR21167381MR	$2,595,000	—
Sep 30, 2021	Listed (Active) SDMLS #TR21167381	$2,695,000	—
Sep 30, 2021	Listed (Active) CRMLS #TR21167381	$2,695,000	—
Sep 30, 2021	Listed (Active) CLAW #TR21167381MR	$2,695,000	—
Oct 23, 2015	Sold CLAW #CV15167122MR	$1,310,000	—
Oct 23, 2015	Sold CRMLS #CV15167122	$1,310,000	—
Oct 20, 2015	Sold (Public Record) Public Record #558405477	$1,310,000	+5.6% / yr
Sep 29, 2015	Pending CRMLS #CV15167122		—
Sep 29, 2015	Pending CLAW #CV15167122MR		—
Aug 12, 2015	Price Change CRMLS #CV15167122	$1,450,000	—
Jul 30, 2015	Withdrawn / Cancelled CLAW #WS15153245MR		—
Jul 30, 2015	Listed (Active) CLAW #CV15167122MR	$1,490,000	—
Jul 30, 2015	Withdrawn / Cancelled CRMLS #WS15153245	$1,490,000	—
Jul 30, 2015	Listed (Active) CRMLS #CV15167122	$1,490,000	—
Jul 14, 2015	Listed (Active) CLAW #WS15153245MR	$1,490,000	—
Jul 14, 2015	Listed (Active) CRMLS #WS15153245	$1,490,000	—
Jul 7, 2015	Withdrawn / Cancelled CLAW #WS15083089MR		—
Jul 7, 2015	Withdrawn / Cancelled CRMLS #WS15083089	$1,490,000	—
Apr 20, 2015	Listed (Active) CLAW #WS15083089MR	$1,590,000	—
Apr 20, 2015	Listed (Active) CRMLS #WS15083089	$1,590,000	—
Oct 29, 2009	Sold CLAW #C09062153MR	$945,000	—
Oct 29, 2009	Sold CRMLS #C09062153	$945,000	—
Oct 5, 2009	Sold (Public Record) Public Record #277623557	$945,000	+1.1% / yr
Oct 1, 2009	Pending CRMLS #C09062153		—
Oct 1, 2009	Pending CLAW #C09062153MR		—
Jun 6, 2009	Listed (Active) CRMLS #C09062153	$1,099,000	—
Jun 6, 2009	Listed (Active) CLAW #C09062153MR	$1,099,000	—
Aug 27, 2008	Expired CRMLS #C08095147	$1,250,000	—
Aug 27, 2008	Expired CLAW #C08095147MR		—
Aug 26, 2008	Withdrawn / Cancelled CRMLS #P644844	$1,250,000	—
Aug 26, 2008	Withdrawn / Cancelled CLAW #P644844MR		—
Jun 26, 2008	Listed (Active) CRMLS #P644844	$1,250,000	—
Jun 26, 2008	Listed (Active) CLAW #C08095147MR	$1,250,000	—
Jun 26, 2008	Listed (Active) CLAW #P644844MR	$1,250,000	—
Jun 26, 2008	Listed (Active) CRMLS #C08095147	$1,250,000	—
Jun 17, 2008	Expired CRMLS #H08055645	$1,490,000	—
Jun 17, 2008	Expired CLAW #H08055645MR		—
Apr 16, 2008	Listed (Active) CLAW #H08055645MR	$1,490,000	—
Apr 16, 2008	Listed (Active) CRMLS #H08055645	$1,490,000	—
Nov 18, 1991	Sold (Public Record) Public Record #62150311	$780,000	—
Nov 18, 1991	Sold (Public Record) Public Record #62150310	$780,000	—

Date	Event & Source	Price
07/02/2025	Listed (Active) CRMLS #TR25148967	$1,699,000
07/02/2025	Listed (Active) SDMLS #TR25148967	$1,699,000
07/02/2025	Listed (Active) CLAW #TR25148967MR	$1,699,000
01/01/2025	Expired CRMLS #TR24054787	—
12/31/2024	Expired CLAW #TR24054787MR	$1,988,000
08/22/2024	Withdrawn / Cancelled CRMLS #TR24054787	$1,988,000
08/22/2024	Expired SDMLS #TR24054787	—
08/22/2024	Withdrawn / Cancelled SDMLS #TR24054787	—
03/19/2024	Listed (Active) SDMLS #TR24054787	$1,988,000
03/19/2024	Listed (Active) CLAW #TR24054787MR	$1,988,000
03/19/2024	Listed (Active) CRMLS #TR24054787	$1,988,000
03/07/2024	Withdrawn / Cancelled CRMLS #TR23019209	$1,999,000
03/01/2024	Expired CRMLS #TR23027655	—
02/29/2024	Expired CLAW #TR23027655MR	$1,999,000
08/12/2023	Withdrawn / Cancelled CRMLS #TR23027655	—
08/12/2023	Expired SDMLS #TR23027655	$1,999,000
08/12/2023	Withdrawn / Cancelled SDMLS #TR23019209	—
08/12/2023	Withdrawn / Cancelled CLAW #TR23027655MR	—
08/12/2023	Withdrawn / Cancelled CLAW #TR23019209MR	—
02/16/2023	Listed (Active) CRMLS #TR23027655	$1,999,000
02/14/2023	Listed (Active) CLAW #TR23027655MR	$1,999,000
02/14/2023	Listed (Active) SDMLS #TR23027655	$1,999,000
02/04/2023	Listed (Active) SDMLS #TR23019209	$1,999,000
02/04/2023	Listed (Active) SDMLS #TR23019209	—
02/04/2023	Listed (Active) CRMLS #TR23019209	$1,999,000
02/04/2023	Listed (Active) CLAW #TR23019209MR	$1,999,000
04/29/2022	Withdrawn / Cancelled CRMLS #TR21167381	$2,595,000
04/29/2022	Withdrawn / Cancelled SDMLS #TR21167381	—
04/29/2022	Withdrawn / Cancelled CLAW #TR21167381MR	—
02/04/2022	Price Change SDMLS #TR21167381	$2,595,000
02/03/2022	Price Change CLAW #TR21167381MR	$2,595,000
09/30/2021	Listed (Active) SDMLS #TR21167381	$2,695,000
09/30/2021	Listed (Active) CRMLS #TR21167381	$2,695,000
09/30/2021	Listed (Active) CLAW #TR21167381MR	$2,695,000
10/23/2015	Sold CLAW #CV15167122MR	$1,310,000
10/23/2015	Sold CRMLS #CV15167122	$1,310,000
10/20/2015	Sold (Public Record) Public Record #558405477	$1,310,000 +5.6% / yr
09/29/2015	Pending CRMLS #CV15167122	—
09/29/2015	Pending CLAW #CV15167122MR	—
08/12/2015	Price Change CRMLS #CV15167122	$1,450,000
07/30/2015	Withdrawn / Cancelled CLAW #WS15153245MR	—
07/30/2015	Listed (Active) CLAW #CV15167122MR	$1,490,000
07/30/2015	Withdrawn / Cancelled CRMLS #WS15153245	$1,490,000
07/30/2015	Listed (Active) CRMLS #CV15167122	$1,490,000
07/14/2015	Listed (Active) CLAW #WS15153245MR	$1,490,000
07/14/2015	Listed (Active) CRMLS #WS15153245	$1,490,000
07/07/2015	Withdrawn / Cancelled CLAW #WS15083089MR	—
07/07/2015	Withdrawn / Cancelled CRMLS #WS15083089	$1,490,000
04/20/2015	Listed (Active) CLAW #WS15083089MR	$1,590,000
04/20/2015	Listed (Active) CRMLS #WS15083089	$1,590,000
10/29/2009	Sold CLAW #C09062153MR	$945,000
10/29/2009	Sold CRMLS #C09062153	$945,000
10/05/2009	Sold (Public Record) Public Record #277623557	$945,000 +1.1% / yr
10/01/2009	Pending CRMLS #C09062153	—
10/01/2009	Pending CLAW #C09062153MR	—
06/06/2009	Listed (Active) CRMLS #C09062153	$1,099,000
06/06/2009	Listed (Active) CLAW #C09062153MR	$1,099,000
08/27/2008	Expired CRMLS #C08095147	$1,250,000
08/27/2008	Expired CLAW #C08095147MR	—
08/26/2008	Withdrawn / Cancelled CRMLS #P644844	$1,250,000
08/26/2008	Withdrawn / Cancelled CLAW #P644844MR	—
06/26/2008	Listed (Active) CRMLS #P644844	$1,250,000
06/26/2008	Listed (Active) CLAW #C08095147MR	$1,250,000
06/26/2008	Listed (Active) CLAW #P644844MR	$1,250,000
06/26/2008	Listed (Active) CRMLS #C08095147	$1,250,000
06/17/2008	Expired CRMLS #H08055645	$1,490,000
06/17/2008	Expired CLAW #H08055645MR	—
04/16/2008	Listed (Active) CLAW #H08055645MR	$1,490,000
04/16/2008	Listed (Active) CRMLS #H08055645	$1,490,000
11/18/1991	Sold (Public Record) Public Record #62150311	$780,000
11/18/1991	Sold (Public Record) Public Record #62150310	$780,000

For completeness, Compass 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
9/10	Evergreen Elementary School	Public - Serves this home	K to 5	1.6 mi
8/10	Chaparral Middle School	Public - Serves this home	6 to 8	0.6 mi
10/10	Diamond Bar High School	Public - Serves this home	9 to 12	1.7 mi
NR	Ron Hockwalt Academies (Continuation) School	Public - Choice school	9 to 12	2.9 mi


Rating	School	Distance
9/10	Evergreen Elementary School PublicK to 5 Serves this home	1.6 mi
8/10	Chaparral Middle School Public6 to 8 Serves this home	0.6 mi
10/10	Diamond Bar High School Public9 to 12 Serves this home	1.7 mi
NR	Ron Hockwalt Academies (Continuation) School Public9 to 12 Choice school	2.9 mi

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 175 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.

23509 Ridge Line RdDiamond Bar, CA 91765

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

23509 Ridge Line Rd
Diamond Bar, CA 91765