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- Listed price
- $4,000,000
- Listed Oct 1, 2026 · $690/sq ft
- Last sold price
- No recorded sale
6 beds|5 ba|5,797 sqft|45,189 sqft lot|1992 Built|1 days listed
1809 Diamond Knoll, Diamond Bar, CA 91765
Property Description
STUNNING DIAMOND BAR ESTATE WITH PANORAMIC VIEWS! Welcome to luxury living in an exclusive gated community in the prestigious Diamond Bar Hills. This immaculate estate offers breathtaking mountain views, soaring vaulted ceilings, beautiful hardwood floors, and an open, light filled floor plan. The gourmet kitchen features quartz countertops, oversized island, stainless-steel appliances, and a stunning glass tile backsplash. The spacious primary suite offers panoramic views and a private wrap-around balcony. Step into your own resort style backyard with a sparkling pool & spa, waterfall grotto, hot tub, built-in BBQ, and gazebo perfect for entertaining or relaxing. A guest house and private gym add even more versatility. Located near premier golf, dining, fitness, and highly acclaimed Walnut Valley Unified schools. Privacy. Luxury. Views. Resort-style living. This exceptional Diamond Bar estate is one you won’t want to miss!
Listing agent: Monica De La RivaDRE #01782939monica.delariva@yahoo.com, Listing office: Lux Bancorp
MLS data updated 10/16/2026, 9:42:27 PM PT
Source: CRMLSMLS #: DW26217188
Belmont insights
Price & property history
Compare recorded home prices, same-type ZIP sales and mortgage rates.
Latest asking price$4,000,000
Oct 1, 2026
Available records12026
From MLS recordsActual listing and closing events
Prices use the left axis; mortgage rates use the right. Hover, tap, or focus the chart and use the arrow keys. Red SOLD badges mark recorded sales.
This home · nearest recorded event
$4,000,000Original asking price · Oct 1, 2026ZIP 91765 · Oct 2026
No monthly averageAt least 3 eligible sales in this month are required.30-year fixed mortgage benchmark
No weekly rateNo published rate within 7 days of this date.This home · 1 price recordsOct 1, 2026 – Oct 1, 2026
ZIP 91765 · same property typeLoading eligible closed sales…
Freddie Mac · national weekly ratesLoading mortgage-rate history…
Recorded sales in this period (0)
No recorded sales in this range. Select All available for older records; missing records do not mean the home never sold.
ZIP averages use publicly displayable closed sales from our licensed MLS feed, matched to the same ZIP and exact property type. Months with fewer than 3 sales are omitted; the current month is incomplete. Lines connect available monthly observations across gaps and do not represent measured prices in missing months. These averages are not adjusted for size, condition, or location within the ZIP, and are not an appraisal. Feed coverage may not include every sale. All available shows the available home and ZIP history, with mortgage rates over the same dates.
Mortgage benchmark: Freddie Mac Primary Mortgage Market Survey®. © Freddie Mac. Weekly national 30-year fixed rates, not APRs or a loan quote. Actual terms vary. Methodology changed in November 2022. The chart does not establish that interest-rate changes caused a home’s price changes.
Lines connect recorded asking and sale prices. They are visual guides, not estimates of the home’s value between those dates.
View listing & sale records
No earlier records were returned by our current sources. This does not mean the home has never sold.
MLS records may be incomplete. Earlier asking prices are not sale prices.