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Welcome to Casa Diamante, a stunning Spanish & Monterey inspired dream home privately nestled behind the gates of Skyhaus at Rancho Tesoro. Settled atop the peak of the 250-acre master-planned community, 146 Diamante Road offers sweeping views overlooking San Marcos. Our Seller never intended to sell this dream home, as they invested HUNDREDS of thousands of dollars in upgrades to curate this sophisticated retreat. Let's play the upgrade game... you name it, as it was most likely upgraded! From the private and prime location of this lot (end cap offering seclusion and privacy) to the professionally appointed touches throughout. Andrew Lauren Interiors perfectly equipped the interior with the finest of designer finishes and upgrades. Not only is Casa Diamante a designers dream home, it is also a state-of-the-art smart home, complete with nearly all of the bells and whistles one could wish for! From owned solar, surround sound, custom window treatments, highly upgraded cabinetry w/custom lighting throughout, custom built in's (galore), including a queen-sized Murphy bed in the office... this home promises to remain timeless for generations to come! Casa Diamante is perfect for a multitude of lifestyles, as the seamless flow makes it perfect for entertaining large parties or serves as the perfect sanctuary to retreat. This home reveals as if it is a brand new home, so please feel free to bring anyone looking for a turn-key place to call home! Outside of the gated community, acres of open space and miles of scenic trails are your to roam at Rancho Tesoro. Skyhaus homeowners will enjoy a private recreation center, (The Bungalow), located steps away with a pool, fire pit and BBQ pavilion. Ranch Tesoro's stunning setting is located south of Hwy 78, so you are easily connected to 15 Fwy, coastal Carlsbad, a multitude of shopping & business centers, San Marcos Unified schools & located a short drive to some of San Diego's most favorite destinations!
Listing agent: Lisa Pacheco-Ballard DRE #01446970 lisapachecoballard@gmail.com, Listing office: Harcourts Avanti
MLS data updated 11/2/2026, 3:02:46 AM PT
Source: CRMLS, MLS #: 230007276SD
Belmont insights
Compare recorded home prices, same-type ZIP sales and mortgage rates.
Jun 8, 2023
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
$926,500Closed sale · Jun 8, 2023ZIP 92078 · Jun 2023
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.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.
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.