664 N El Camino Real, San Mateo, California 94401, San Mateo, 94401 - 3 bed, 4 bath
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664 N El Camino Real
San Mateo, California 94401
ACTIVE
CONDITION: POOR
3Beds
4Baths
2,550Sq Ft
7,750Lot Size
Property Price
LIST PRICE$1,828,000
EST. MARKET VALUE
$1,903,426
3% BelowMARKET VALUE
SUMMARY
This property presents a Prime Investment Opportunity with a List Price of $1,988,888—positioned well below the $2,032,845 Fair Market Value by 2%. This valuation gap offers $43,957 in Instant Equity. Featuring an extra-large 7,750 sqft R-4 zoned lot, the property provides significant development potential. With a Condition Rating of 5, the aging infrastructure requires modernization, yet the multi-unit layout offers immediate income. This is a high-reward asset ideal for Buy-and-Hold Investors or Developers seeking a strategic Peninsula acquisition.
Estimated Market Value
$1,903,426+$75,426 Equity Potential
Based on Realkey algorithm analyzing recent comparable sales in San Mateo.
Comparable Sales Map
Comparables within 1 miles sold in recently
Map unavailable.
| Address | Sold Price | Beds | Baths | Sq Ft | $/Sqft | Distance |
|---|---|---|---|---|---|---|
★ 664 N El Camino Real Subject | $1,828,000* List Price | 3 | 4 | 2,550 | $746 | - |
A 137 Elm Street Active | $2,075,000 List Price | 4 | 3 | 2,380 | $872 | 0.6 mi |
* Subject property listed price vs sold prices of comps.
Condition Analysis
See Full ReportOVERALL CONDITION SCORE
Poor
TeardownExcellent
Property is extensive renovation needed.
Built in 1925 and marketed primarily as a 'development opportunity,' the property shows significant age. While it has received cosmetic updates like new carpet and paint, the kitchen and bathrooms remain dated (likely 30+ years old) with basic fixtures and older cabinetry. The R-4 zoning and agent focus on land value suggest the structure requires a full rehab or redevelopment.
PROSSTRENGTHS & OPPORTUNITIES
- Development Potential
The property is situated on an extra-large 7,750 sqft lot with R-4 zoning, providing a rare and significant opportunity for high-density residential development in a prime Peninsula location.
- Multi-Unit Income Stream
Featuring a main front house plus two separate rear units (a 1-bedroom and a studio), the flexible layout offers immediate rental income potential or versatile multi-generational living arrangements.
- Strategic Peninsula Location
Ideally located between Downtown Burlingame and Downtown San Mateo, the property offers excellent proximity to Caltrain, major employers, and high-end shopping and dining corridors.
CONSRISKS & DEFICIENCIES
- MLS Listing Discrepancy
Living area discrepancy between mls listing and other public or private record. mls listing living area = 2550, other record living area = 1420. Bedroom count discrepancy between mls listing and other public or private record. mls listing bedroom count = 3, other record bedroom count = 2.
- High-Traffic Exposure
Located directly on El Camino Real, a major arterial thoroughfare, the property is subject to significant traffic noise and may lack the quiet privacy found on interior residential streets.
- Aging Infrastructure
Originally built in 1925, the structures may require substantial capital investment for system upgrades or modernization to meet current market expectations for luxury or high-efficiency living.
About 664 N El Camino Real
Prime development opportunity in a highly desirable El Camino Real location! This property features a front home with 2 bedrooms and 2 full bathrooms, a spacious dining area, and a breakfast nook that opens to the kitchen. Recent updates include new carpeting and partial interior paint. The rear structure offers excellent income potential and is divided into two separate living spaces: one unit features 1 bedroom, 1 full bathroom, and a full kitchen, while the other is a studio with its own bathroom. The flexible layout provides the opportunity to generate additional rental income or accommodate extended family. Situated on an extra-large R-4 zoned lot, this property offers multiple development possibilities (buyer to verify with the appropriate authorities). Conveniently located just minutes from Downtown Burlingame, Downtown San Mateo, Caltrain, shopping, dining, and Highway 101, this is an exceptional opportunity for investors, developers, or owner-users seeking future potential in a prime Peninsula location.
Property Details
Public Facts
- Property Type
- Single Family Residence
- Year Built
- 1925
- Lot Size
- 7,750 Sq. Ft.
Interior
- Total Bedrooms
- 3
- Total Bathrooms
- 4 (4 Full, 0 Half)
Exterior & Parking
No exterior & parking available.
Utilities & Misc
- HOA Fee
- $0 / Month
Neighborhood Insights
San Mateo Unified Schools
San Mateo Park Elementary School
Grades K-5 • 0.3 mi
4/10
Borel Middle School
Grades 6-8 • 1.8 mi
6/10
San Mateo High School
Grades 9-12 • 0.5 mi
7/10
Sensitive Facilities
No sensitive facilities data found.
Neighborhood Comparison
| Feature | Subject | Average Home |
|---|---|---|
| Beds | 3.0 | 3.0 |
| Baths | 4.0 | 2.0 |
| Square foot | 2,550 | 1,680.139 |
| Lot Size | 7,750 | 5,985.125 |
| Price | $1.83M | $2.23M |
| Price per sq ft | $717 | $1.4K |
| Built year | 1925 | 1951 |
| HOA | $0 | $401 |
| Days on market | 35 | 32 |
Pricing History
Listed for Sale
Aug 21, 2026
$1,828,000
$1,988,888
-8% Price Drop
Initial Listing
Price Change
Aug 5, 2026
$1,988,888
Initial Listing
Sold
Dec 27, 2021
$1,669,000
Public Record