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555 Sierra Madre Boulevard, San Marino, CA 91108

$4.00M6bd · 6ba · 4,307 sqft
Lot 12,826 sqft•Single Family Residence•
Active
•47d on market•MLS# WS-26202630

Property Description

Exceptional space, flexibility, and value in one of San Marino’s most desirable north-side neighborhoods. Offering approximately 4,300 sq. ft. of total living space, this extensively remodeled property includes a 3,500 sq. ft. main residence with 4 bedrooms and 4 bathrooms, plus a brand-new 800 sq. ft. detached ADU with 2 bedrooms, 2 bathrooms, a full kitchen, and living room—ideal for extended family, guests, a home office, or independent living. Set on an approximately 12,826 sq. ft. lot, the main home blends classic San Marino character with thoughtful updates. The formal dining room opens to an updated gourmet kitchen with granite countertops, newer Frigidaire appliances, and a bright breakfast room. Three spacious bedroom suites are located on the main level, while the second floor features a private master bedroom suite with retreat/loft. Multiple living areas provide excellent space for entertaining, relaxing, and everyday living. The newly completed ADU is a standout feature, functioning as a truly independent residence and adding exceptional versatility to the property. Outside, redesigned landscaping surrounds the home with mature greenery and flowering plants, while one expansive rear patio are perfect for outdoor dining, barbecues, and entertaining. A fully paid solar system adds energy efficiency and long-term savings. Ideally located in north San Marino near The Huntington Library, Art Museum, and Botanical Gardens, the home is also convenient to local schools, parks, shopping, dining, and other community amenities. With 6 bedrooms, 6 bathrooms, approximately 4,300 sq. ft. of total living space, a new ADU, extensive upgrades, and paid solar, 555 Sierra Madre Blvd offers a rare combination of space, flexibility, and value in San Marino.

Features & Amenities

FeeBuilt 1925

Property Details

Land Type
Fee
Year Built
1925
Property Type
Residential
Property Subtype
Single Family Residence
Parking Spaces
2
Garage Spaces
2
Heating
Central
Cooling
Central Air
View
None
Flooring
Laminate, Wood
Roof
Shingle
City
San Marino
Zip Code
91108
County
Los Angeles
Listed byPinnacle Real Estate Group, CHEN DONG

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$20,221.12
Principal & Interest
Loan Amount
$3,199,200
Total Interest
$4,080,403
Total Payment Over 30 Years
$7,279,603
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 · 5 active · 5 closed

555 Sierra Madre Boulevard, San Marino, CA 91108

San Marino · Single Family Residence

$4.00M
Luxury Tier
Beds
6
Baths
6
Sqft
4,307
Lot
12,826 sqft
Year
1925
$/Sqft
$928
Pool: No✓
Spa: No✓
View: None✓
Garage: 2-car✓

Listed in line with the median closed sale of $3,890,450. Luxury tier — fewer comparable sales widen the confidence range.

Price Position

Aligned with the market — fair pricing for the comps.

At market
Subject listed at $4.00M· $928/sqft
Total list price
Closed comps
vs closed median $3.89M
+$109K (+2.8%)
Active comps
vs active median $3.88M
+$119K (+3.1%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $1,044
−$116 (−11.1%)

Active Properties (5)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
1357 Westhaven RoadSan Marino1937553,22317,000$1,178$3.80M4074
845 Canterbury RoadSan Marino1950433,08920,055$1,356$4.19M2971
2964 LombardyPasadena1942433,04316,300$1,150$3.50M10770
1203 Patton WaySan Marino1977564,98915,240$880$4.39M6566
900 Gainsborough DrivePasadena1968655,90020,119$658$3.88M2663
Total: 5 · Average4.84.44,048.817,742.8$1,044.4$3.95M53.4
Median3,223$3.88M

Closed Properties (5)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
627 Winston AvenueSan Marino193011/14/2025443,28713,274$4.20M$4.29M$1,3071.024577
2150 San Pasqual StreetPasadena193407/08/2026453,51610,295$3.88M$3.70M$1,0510.954075
685 Chester AvenueSan Marino195105/28/2026554,40123,064$3.98M$3.89M$8840.984475
2932 Gainsborough DriveSan Marino194109/16/2026444,36512,746$3.50M$3.45M$7900.9911874
1886 San Pasqual StreetPasadena192411/07/2025354,24729,112$4.80M$4.20M$9890.885667
Total: 5 · Average4.04.63,963.217,698.2$3.91M$3.91M$1,004.2—60.6
Median4,247$3.89M$3.89M

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.