Check Availability
$1,699,000
● Land - In Contract

23509 Ridge Line Road

Diamond Bar, CA 91765
bedrooms
Studio
bathrooms
0 Bath
$8,693
Est. Monthly
$350
HOA / Fees

About This Property

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.
Unit Size
-
Days on Market
-
Land Size
1.59 acres
Price per sqft
-
Property Type
Land
Property Taxes
-
HOA Dues
$350
Year Built
1975

Listed By

Juliet Chung
Country Queen Real Estate
Diana Cheng
Country Queen Real Estate

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Last updated: 3 months ago (CRMLS #TR25148967)

Price History

Date / Event Date Event Price
Aug 27, 2026 In contract -
In contract
Jul 2, 2025 Listed by Country Queen Real Estate $1,699,000
Listed by Country Queen Real Estate
Aug 14, 2023 No longer available -
No longer available
Feb 16, 2023 Listed by CountryQueen Real Estate $1,999,000
Listed by CountryQueen Real Estate
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 buyer(s)' 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. Asking price includes approved plans, land value, grading, sold as-it-is. The manager has listed the unit size as 8000 square feet.
Apr 30, 2022 No longer available -
No longer available
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Property Highlights

Garage
Exterior Details
Lot Features: Landscaped, LotOver40000Sqft, SprinklerSystem
Lot Size Area: 69190
Lot Size Units: Square Feet
Lot Size Acres: 1.5884
Lot Size Square Feet: 69190
Tax Lot: 50
Water Source: Public
Utilities Details
Sewer : Public Sewer
Location Details
HOA Fee: $350
HOA Fee Frequency: Monthly

Building Info

Overview

    General

  • Year Built: 1975
  • Effective Year Built: 1975
  • Building Count: 1
  • Total Rooms: 8
  • Bedroom Count: 4
  • Full Bathrooms: 3
  • Building Condition: 3
  • Building Quality: 7
  • Construction Type: 17
  • Building Style: 0
  • Exterior Walls Type: 12
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 18
  • Floor Count: 300
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 0
  • Parking Space Count: 3
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 8

    Dimensions

  • Lot Size Square Feet: 69,190
  • Total Building Area: 3,220
  • Building Area: 3,220
  • Building Area Measurement: L

    Heating and Cooling

  • Air Conditioning: 1
  • Heating: 3
  • Heated Square Feet: 3,220
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 1
  • Water Service: 2

Building

  • Building Type: 0
  • Property Class: V
  • Subdivision: 30091
  • Land Acres: 0000001588
  • Standard Land Use Code: 8001
  • County Land Use Code: 010V
  • Legal Description 1: TRACT NO 30091 LOT/SEC 50

Neighborhood

  • School District Name: Walnut Valley Unified School District
  • Census Tract: 403324

Zoning

  • Zoning: LCR140000*

Geography

  • Assessors Map Reference: 97-A3
  • Subdivision Tract Number: 30091
  • Parcel: 8713-004-004
  • Lot: 50
  • Municipality: EAST /N. DIAMOND BAR
  • Latitude: 33.9907
  • Longitude: -117.81

    Address

  • Full Address: 23509 Ridge Line Rd
  • Address - House Number: 23509
  • Address - Street Name: Ridge Line
  • Address - Suffix Type: Rd
  • State: CA
  • City Name: Diamond Bar
  • Carrier Code: C094
  • 4-Digit Zip Code: 3008
  • Zip Code: 91765

Valuation

    Tax

  • Tax Year: 2022
  • Tax Amount: $1,786,882
  • Tax Rate Code Area: 10-069

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $1,176,286
  • Assessed Land Value: $1,176,286

    Sales

  • Current Sale Contract Date: Oct 20, 2015
  • Current Sale Recording Date: Oct 26, 2015
  • Current Sale Price:
  • Current Sale Document Type: 36
  • Current Sale Input Document Number: 15-1308347
  • Previous Sale Recording Date: Oct 29, 2009
  • Previous Sale Contract Date: Oct 05, 2009
  • Previous Sale Amount: $945,000
  • Previous Sale Document Type: 36
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Diamond Bar


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Frequently Asked Questions

When was property at 23509 Ridge Line Road built and last sold?
The property at 23509 Ridge Line Road was built in 1975 and last sold on Oct 20, 2015 for $1,310,000.
How much is this home worth?
The estimated value of the home located at 23509 Ridge Line Road is $1,715,990.
What are some comparable homes to 23509 Ridge Line Road?
There are currently no comparable homes to 23509 Ridge Line Road.