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

503 E Mendocino, Altadena, California 91001 home-pic-0

503 E Mendocino

Altadena, California 91001

ACTIVE
CONDITION: EXCELLENT
5Beds
4Baths
3,046Sq Ft
16,831Lot Size

Property Price

LIST PRICE$1,899,000
EST. MARKET VALUE
$1,984,131
4% BelowMARKET VALUE

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

$1,984,131 +$85,131 Equity Potential
Based on Realkey algorithm analyzing recent comparable sales in Altadena.

Comparable Sales Map

Comparables within 1 miles sold in recently

Address Sold Price BedsBathsSq Ft$/SqftDistance
503 E Mendocino
Subject
$1,899,000*
List Price
543,046$651-
A
1313 E Palm Street
Sold
$1,590,000332,862$5560.9 mi
B
379 Buena Loma
Active
$1,750,000
List Price
742,950$5930.4 mi

* Subject property listed price vs sold prices of comps.

Condition Analysis

OVERALL CONDITION SCORE

Excellent
TeardownExcellent

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

FeatureSubjectAverage HomeNeighborhood Ranking (50 Listings)
Beds5.03.0
90%
Baths4.02.0
81%
Square foot3,0461,804.5
85%
Lot Size16,8319,174
88%
Price$1.90M$1.19M
85%
Price per sq ft$623$681
33%
Built year19191946
2%
HOA$0$0
50%
Days on market7170
2%

Pricing History

Listed for Sale

Feb 27, 2026

$1,899,000

Initial Listing

Sold

Jul 25, 2023

$1,050,000

Public Record

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