23509 Ridge Line Road, Diamond Bar
$1,699,000
0 bd · 0 ba · 0 sqft · Home · Diamond Bar · 457 days on market
Updated October 1, 2026










Key Facts
- Property Type
- Home
- Lot Size
- 69,190 sqft
- HOA
- $350/mo
- Days on Market
- 457
- Listed
- Jul 1, 2025
- MLS #
- TR25148967
- Status
- Pending
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About this home
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.
Highlights
- 0-bedroom, 0-bath home.
- 0 square feet of living space.
- Located in Diamond Bar.
Price History
| Date | Price | Change |
|---|---|---|
| Oct 1, 2026 | $1,699,000 | — |
| Listed Jul 1, 2025 | ||
Location
About Diamond Bar
- Active Listings
- 194
- Median Price
- $1,036,000
Estimate a Monthly Payment
Estimated Monthly Payment
$11,096/mo
Includes estimated taxes and insurance at the assumption rates below. HOA dues are not included — enter your community's HOA (varies widely by community, and absent from listing data) for an accurate total.
- Principal & Interest
- $9,043
- Property Tax
- $1,557
- Insurance
- $496
- HOAnot included — enter your dues
- $0
Estimate only — not a loan offer or rate quote. Confirm actual figures with a lender.
Get Pre-Approved →Listing courtesy of Country Queen Real Estate
Based on information from California Regional MLS as of 2026-10-02T05:41:32.370Z. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS.