
15878 Bella Siena, Rancho Santa Fe, CA 92067
15878 Bella Siena, Rancho Santa Fe, CA 92067
Property Description
Timeless Resort Estate | Premier Rancho Santa Fe Location Originally built in 2006 by renowned Sylvester Homes, this single-level Tuscan-inspired estate spans nearly 13,000 sq ft on 2 flat, ultra-private acres at the end of a quiet cul-de-sac. Recently refreshed with custom interior upgrades and modern designer lighting, the home blends timeless craftsmanship with a clean, updated aesthetic—making it one of the premier entertainer’s properties on the Rancho Santa Fe market. The flexible floor plan offers 4 bedrooms in the main residence plus a detached guest villa with separate living room and bedroom. Grand-scale interiors include a stunning great room with 23-foot ceilings, exposed wood trusses, and wrought iron chandeliers, opening seamlessly to the outdoor loggia for true indoor-outdoor living. Designed for entertaining, the estate features a movie theater, walnut-paneled library, billiard room with bar and wine cellar, formal dining room with dome ceiling and butler’s pantry, exercise room, and 6-car garage. The private backyard offers a resort-style setting with expansive entertaining areas, fireplace, built-in cabinetry, bar with Sub-Zero refrigeration, and pool bath—enjoyed from nearly every room. Exceptional details throughout include hand-carved mahogany entry doors, stone finishes, custom cabinetry, stain-grade windows and doors, cedar-lined closets, and extensive wood beam work. Quiet, private, and fully usable, this is a rare opportunity to own a legacy estate in one of Rancho Santa Fe’s most desirable locations.
Features & Amenities
Property Details
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Comparative Market Analysis
Luxury Tier · 3 active · 5 closed
Rancho Santa Fe · Single Family Residence
Listed 5.3% above the median closed sale of $12,250,000. Price per sqft ($995) is a 37% discount to closed comps ($1,587). Expect a longer timeline — comps averaged 230 days on market. Luxury tier — fewer comparable sales widen the confidence range.
Price Position
Positioned above the market — commands a premium.
Active Properties (3)
Active Comparables
| Address | City | Year | BD | BTH | SqFt | LotSz | LP/SqFt | LP | DIM | Score |
|---|---|---|---|---|---|---|---|---|---|---|
| 5293 La Glorieta | Rancho Santa Fe | 2009 | 6 | 8 | 9,341 | 131,987 | $1,498 | $13.99M | 48 | 68 |
| 6884 Poco Lago | Rancho Santa Fe | 2023 | 7 | 9 | 11,121 | 97,139 | $1,257 | $13.98M | 143 | 55 |
| 6533 Lago Lindo | Rancho Santa Fe | 2008 | 5 | 7 | 8,382 | 216,929 | $1,652 | $13.85M | 30 | 48 |
| Total: 3 · Average | 6.0 | 8.0 | 9,614.667 | 148,685 | $1,469 | $13.94M | 73.66666666666667 | |||
| Median | 9,341 | $13.98M | ||||||||
Closed Properties (5)
Closed Comparables
| Address | City | Year | Date | BD | BTH | SqFt | LotSz | LP | SP | SP/SqFt | SP/LP | DIM | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4943 El Arco Iris | Rancho Santa Fe | 2009 | 05/28/2026 | 6 | 7 | 9,096 | 111,078 | $11.50M | $11.00M | $1,209 | 0.96 | 34 | 67 |
| 16734 Via De Santa Fe | Rancho Santa Fe | 1928 | 12/04/2025 | 6 | 6 | 6,000 | 90,169 | $12.99M | $12.99M | $2,166 | 1.00 | 55 | 67 |
| 4808 Sunny Acres Lane | Del Mar | 2019 | 07/29/2026 | 6 | 8 | 5,334 | 42,688 | $9.38M | $11.10M | $2,081 | 1.18 | 835 | 57 |
| 6314 El Apajo | Rancho Santa Fe | 2007 | 09/22/2026 | 10 | 17 | 21,805 | 205,168 | $15.99M | $14.50M | $665 | 0.91 | 127 | 55 |
| 17965 Via De Fortuna | Rancho Santa Fe | 2025 | 12/01/2025 | 7 | 8 | 6,757 | 110,642 | $14.25M | $12.25M | $1,813 | 0.86 | 98 | 51 |
| Total: 5 · Average | 7.0 | 9.2 | 9,798.4 | 111,949 | $12.37M | $12.37M | $1,586.8 | — | 229.8 | ||||
| Median | 6,757 | $12.25M | $12.25M | ||||||||||
Market Analysis
List vs Sale $/SqFt
Sale Price Trend
Days on Market
Sale vs List Price
This analysis was generated automatically from MLS data. For an in-depth, human-reviewed valuation, contact Joseph Sardella at josephsardella@gmail.com.