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15878 Bella Siena, Rancho Santa Fe, CA 92067

$12.9M5bd · 8ba · 12,959 sqft
Lot 2 sqft•Single Family Residence•
Active
•183d on market•MLS# 8N-2603783

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

FeeBuilt 2006

Property Details

Land Type
Fee
Year Built
2006
Property Type
Residential
Property Subtype
Single Family Residence
Parking Spaces
6
Garage Spaces
6
Cooling
Central Air
View
Trees/Woods
City
Rancho Santa Fe
Zip Code
92067
County
San Diego
Listed byLuxury Coast Grp Barry Estates, Sean Barry

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$65,229.42
Principal & Interest
Loan Amount
$10,320,000
Total Interest
$13,162,591
Total Payment Over 30 Years
$23,482,591
This calculator provides estimates only. Actual mortgage payments may include taxes, insurance, HOA fees, and PMI. Contact a lender for accurate quotes.

Comparative Market Analysis

Luxury Tier · 3 active · 5 closed

15878 Bella Siena, Rancho Santa Fe, CA 92067

Rancho Santa Fe · Single Family Residence

$12.9M
Luxury Tier
Beds
5
Baths
8
Sqft
12,959
Lot
2.01 ac
Year
2006
$/Sqft
$995
Pool: Yes✓
Spa: No✓
View: Trees/Woods✓
Garage: 6-car✓

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.

Premium
Subject listed at $12.90M· $995/sqft
Total list price
Closed comps
vs closed median $12.25M
+$650K (+5.3%)
Active comps
vs active median $13.98M
−$1.08M (−7.7%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $1,469
−$474 (−32.3%)

Active Properties (3)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
5293 La GlorietaRancho Santa Fe2009689,341131,987$1,498$13.99M4868
6884 Poco LagoRancho Santa Fe20237911,12197,139$1,257$13.98M14355
6533 Lago LindoRancho Santa Fe2008578,382216,929$1,652$13.85M3048
Total: 3 · Average6.08.09,614.667148,685$1,469$13.94M73.66666666666667
Median9,341$13.98M

Closed Properties (5)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
4943 El Arco IrisRancho Santa Fe200905/28/2026679,096111,078$11.50M$11.00M$1,2090.963467
16734 Via De Santa FeRancho Santa Fe192812/04/2025666,00090,169$12.99M$12.99M$2,1661.005567
4808 Sunny Acres LaneDel Mar201907/29/2026685,33442,688$9.38M$11.10M$2,0811.1883557
6314 El ApajoRancho Santa Fe200709/22/2026101721,805205,168$15.99M$14.50M$6650.9112755
17965 Via De FortunaRancho Santa Fe202512/01/2025786,757110,642$14.25M$12.25M$1,8130.869851
Total: 5 · Average7.09.29,798.4111,949$12.37M$12.37M$1,586.8—229.8
Median6,757$12.25M$12.25M

Market Analysis

List vs Sale $/SqFt

Sale Price Trend

Days on Market

Sale vs List Price

AI-generated CMA

This analysis was generated automatically from MLS data. For an in-depth, human-reviewed valuation, contact Joseph Sardella at josephsardella@gmail.com.