503 E Mendocino, Altadena, California 91001, Altadena, 91001 - 5 bed, 4 bath

503 E Mendocino
Altadena, California 91001
Property Price
SUMMARY
Analysis of 503 E Mendocino, Altadena, California 91001 reveals a Prime Investment Opportunity with a current list price of $1,899,000—significantly undercutting the $1,984,131 Fair Market Value by 4%. This valuation gap indicates a +$85,131 Instant Equity potential for buyers. The property maintains a Excellent Condition Rating (95/100), indicating excellent structural integrity and modern finishes throughout. This turnkey property requires minimal updates and is ready for immediate occupancy. Located in a high-demand neighborhood within the Altadena Unified School District, this asset is categorized as a low-risk, high-reward acquisition suitable for both Buy-and-Hold Investors and Owner-Occupants willing to undertake light renovation work.
Estimated Market Value
Comparable Sales Map
Comparables within 1 miles sold in recently
| Address | Sold Price | Beds | Baths | Sq Ft | $/Sqft | Distance |
|---|---|---|---|---|---|---|
★ 503 E Mendocino Subject | $1,899,000* List Price | 5 | 4 | 3,046 | $651 | - |
A 1313 E Palm Street Sold | $1,590,000 | 3 | 3 | 2,862 | $556 | 0.9 mi |
B 379 Buena Loma Active | $1,750,000 List Price | 7 | 4 | 2,950 | $593 | 0.4 mi |
* Subject property listed price vs sold prices of comps.
Condition Analysis
OVERALL CONDITION SCORE
Property is new construction or fully renovated.
Although originally built in 1919, the property has undergone an extensive and high-end renovation within the last few years, transforming it into a modern compound. The main residence and the detached ADU feature impeccably updated kitchens and bathrooms with contemporary styles and high-quality finishes. The property showcases new flooring, modern light fixtures, and updated systems throughout, meeting the criteria for a fully renovated home with no deferred maintenance and a high level of polish.
PROSSTRENGTHS & OPPORTUNITIES
- High Available Lot Utilization
The property has a large lot size, which is more than 4 times of its living area. lot size in square feet = 16831, living area = 3046.
- Versatile Dual-Living Compound
The property features two impeccably renovated residences, including a 3-bedroom main home and a detached 2-bedroom ADU, providing rare flexibility for multi-generational living or significant rental income potential.
- Expansive Private Lot
Spanning nearly 17,000 square feet with automatic gates and a sweeping circular drive, this estate offers a high degree of privacy and curb appeal in a sought-after Altadena pocket.
CONSRISKS & DEFICIENCIES
- MLS Listing Discrepancy
Living area discrepancy between mls listing and other public or private record. mls listing living area = 3046, other record living area = 1719. Bedroom count discrepancy between mls listing and other public or private record. mls listing bedroom count = 5, other record bedroom count = 3.
- Historical Infrastructure Risks
While the home is marketed as a Mid-Century Ranch, the 1919 build date suggests a century-old foundation which may involve legacy plumbing or electrical complexities despite the modern aesthetic updates.
- Limited Pool Scale
The pool is described as an 'intimate jetted pool,' which may be undersized for buyers expecting a full-scale swimming facility on a lot of this significant size.
About 503 E Mendocino
Just moments from iconic Christmas Tree Lane, beyond private automatic gates and a sweeping circular drive, this updated Mid-Century Ranch reveals itself as a rare Altadena compound: serene, refined, and thoughtfully reimagined for modern living. Set on an expansive lot, this property offers two impeccably renovated residences that feel established yet sophisticated, completed with uncompromising attention to detail. The main home features 3 bedrooms and 2 baths, centered around a beautiful open kitchen designed for both daily living and elegant entertaining. Light pours through the interiors, accentuating clean lines, curated materials, and a seamless indoor outdoor flow. Every upgrade has been executed with intention, delivering a level of polish rarely found in homes of this era. A detached 2 bedroom, 2 bath ADU/guest house provides exceptional versatility, ideal for multi-generational living, extended stays, executive-level home office, or private retreat space. Between the two residences, a tranquil courtyard is anchored by a built-in bbq and intimate jetted pool creating a boutique resort ambiance perfect for quiet evenings or curated gatherings. Centrally located in one of the community’s most cherished pockets, this estate feels remarkably secluded offering rare space and discretion in Southern California. In a neighborhood defined by resilience and renewal, this offering represents not only continuity, but the opportunity to step right into a home that has already been thoughtfully elevated. A distinguished Altadena compound designed for those who value privacy, presence, and enduring quality.
Property Details
Public Facts
- Property Type
- Single Family Residence
- Year Built
- 1919
- Lot Size
- 16,831 Sq. Ft.
Interior
- Total Bedrooms
- 5
- Total Bathrooms
- 4 (4 Full, 0 Half)
Exterior & Parking
No exterior & parking available.
Utilities & Misc
- HOA Fee
- $0 / Month
Neighborhood Insights
Sensitive Facilities
No sensitive facilities data found.
Neighborhood Comparison
| Feature | Subject | Average Home | Neighborhood Ranking (50 Listings) |
|---|---|---|---|
| Beds | 5.0 | 3.0 | 90% |
| Baths | 4.0 | 2.0 | 81% |
| Square foot | 3,046 | 1,804.5 | 85% |
| Lot Size | 16,831 | 9,174 | 88% |
| Price | $1.90M | $1.19M | 85% |
| Price per sq ft | $623 | $681 | 33% |
| Built year | 1919 | 1946 | 2% |
| HOA | $0 | $0 | 50% |
| Days on market | 7 | 170 | 2% |
Pricing History
Listed for Sale
Feb 27, 2026
$1,899,000
Initial Listing
Sold
Jul 25, 2023
$1,050,000
Public Record









































































