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1230 Winston Avenue, San Marino, CA 91108

$4.99M3bd · 4ba · 4,022 sqft
Lot 24,847 sqft•Single Family Residence•
Active
•48d on market•MLS# P1-28584

Property Description

Nestled on a sprawling, park-like 0.57-acre double lot in one of San Marino's most coveted neighborhoods, this Georgian Colonial estate offers a rare blend of timeless character and modern luxury. Designed by architect Cyril Bennett, known for his design of the Pasadena Playhouse and the Raymond Theater, this property features a meticulously updated 1941 home plus a detached, oversized luxury 4-car garage, complete with a kitchenette, built-in appliances, and gorgeous ¾ bathroom. This is an excellent bonus space for a home gym, catering prep, or game room with every amenity imaginable - air-conditioning, built-in cabinets, walk-in closet, finished floor, and 2 pull-down staircases to the huge plywood-decked attic storage area. From the moment you enter the home, you will recognize its sophistication. The grand foyer features a sweeping staircase and a high domed ceiling. The formal living room, accented by crown molding, oak hardwood floors, large bay windows, and a gas fireplace, flows seamlessly through 2 sets of French doors to a stunning patio area. A beautiful library/family room provides a serene retreat, with cozy wood paneling and a built-in TV/entertainment center, offering picturesque views of the property's lush landscaping and towering redwoods. The gourmet kitchen is mise en place made manifest, equipped with Viking stainless steel appliances, farmhouse porcelain sink, quartz countertops, a breakfast nook and access to the elegant dining room. Beyond the main residence, the estate excels in versatility. Descend the storybook stone stairs to a private outdoor oasis showcasing a waterfall, fireplace and plenty of seating for al fresco dining. A temperature-controlled secluded summer cottage, featuring French doors and a paver stone patio, provides an ideal spot for home office or studio. There is no shortage of entertaining spaces. The private rear yard features a built-in firepit, an outdoor kitchen with high-end built-in appliances, including a barbecue, sink, cooktop and refrigerator. With an abundance of amenities, upgrades, and entertainment space, this property is a rare find. The system updates include a new 400-amp electrical panel, updated wiring and plumbing, dual 5-ton HVAC units, 2 water heaters, an automatic driveway gate and plenty of on-site parking. Conveniently situated near the Huntington Library and San Marino High School, this exceptional property seamlessly integrates classic elegance with contemporary functionality.

Features & Amenities

FeeBuilt 1941

Property Details

Land Type
Fee
Year Built
1941
Property Type
Residential
Property Subtype
Single Family Residence
Garage Spaces
4
Heating
Central, Forced Air
Cooling
Central Air, Dual, Ductless
View
None
Flooring
Tile, Wood
Roof
Shake, Wood
City
San Marino
Zip Code
91108
County
Los Angeles
Listed byThe Agency, Sarah N Rogers

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$25,222.04
Principal & Interest
Loan Amount
$3,990,400
Total Interest
$5,089,535
Total Payment Over 30 Years
$9,079,935
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

1230 Winston Avenue, San Marino, CA 91108

San Marino · Single Family Residence

$4.99M
Luxury Tier
Beds
3
Baths
4
Sqft
4,022
Lot
24,847 sqft
Year
1941
$/Sqft
$1240
Pool: No✓
Spa: No✓
View: None✓
Garage: 4-car✓

Listed 12.7% above the median closed sale of $4,425,000. Closed comps sold at 110% of list — strong seller's market. Luxury tier — fewer comparable sales widen the confidence range.

Price Position

Positioned above the market — commands a premium.

Premium
Subject listed at $4.99M· $1,240/sqft
Total list price
Closed comps
vs closed median $4.42M
+$563K (+12.7%)
Active comps
vs active median $3.70M
+$1.29M (+34.8%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $984
+$256 (+26.0%)

Active Properties (3)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
880 Canterbury RoadSan Marino1951443,94024,503$1,180$4.65M883
1206 Winston AvenueSan Marino1936443,52321,585$877$3.09M1977
1164 Adair StreetSan Marino1930444,13611,552$895$3.70M6068
Total: 3 · Average4.04.03,866.33319,213.333$984$3.81M29
Median3,940$3.70M

Closed Properties (5)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
1523 Chelsea RoadSan Marino193905/12/2026443,78322,983$4.09M$4.28M$1,1301.052680
1190 Lorain RoadSan Marino194007/24/2026443,72922,410$3.98M$4.42M$1,1871.114180
1455 Chelsea RoadSan Marino194807/09/2026443,48027,370$4.39M$4.95M$1,4221.133777
1570 Charlton RoadSan Marino194007/15/2026443,87716,290$3.89M$4.85M$1,2511.252174
2932 Gainsborough DriveSan Marino194109/16/2026444,36512,746$3.50M$3.45M$7900.9911770
Total: 5 · Average4.04.03,846.820,359.8$4.39M$4.39M$1,156—48.4
Median3,783$4.42M$4.42M

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.