22 22 Calle Del Casarillo, Diablo, California 94528, Diablo, 94528 - 6 bed, 6 bath

22 22 Calle Del Casarillo, Diablo, California 94528 home-pic-0

22 22 Calle Del Casarillo

Diablo, California 94528

ACTIVE
CONDITION: EXCELLENT
6Beds
6Baths
4,246Sq Ft
20,000Lot Size

Property Price

LIST PRICE$4,122,000
EST. MARKET VALUE
$3,841,244
7% AboveMARKET VALUE

SUMMARY

Analysis of 22 22 Calle Del Casarillo, Diablo, California 94528 reveals a property with a current list price of $4,122,000, which is 7% above the estimated $3,841,244 Fair Market Value. Buyers should carefully evaluate the pricing and consider negotiation opportunities. 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 Diablo 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

$3,841,244
Based on Realkey algorithm analyzing recent comparable sales in Diablo.

Comparable Sales Map

Comparables within 1 miles sold in recently

Address Sold Price BedsBathsSq Ft$/SqftDistance
22 22 Calle Del Casarillo
Subject
$4,122,000*
List Price
664,246$905-
A
1826 Alameda Diablo
Sold
$3,650,000554,995$7310.5 mi
B
1953 La Cadena
Sold
$4,900,000665,306$9230.2 mi

* Subject property listed price vs sold prices of comps.

Condition Analysis

OVERALL CONDITION SCORE

Excellent
TeardownExcellent

Property is new construction or fully renovated.

While originally built in 1972, the property has undergone an extensive, high-end renovation within the last 5 years that meets current luxury standards. The kitchen is fully modernized with sculptural quartzite countertops and professional-grade Miele appliances, while the primary suite features a spa-caliber wet room with heated floors. With rich hardwood flooring throughout, updated fixtures, and a fully equipped two-story guest residence, the home shows no signs of deferred maintenance and presents as a virtually new estate.

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 = 20000, living area = 4246.

  • Great Schools

    Middle School: Los Cerros Middle School (9/10). High School: Monte Vista High School (10/10).

  • Detached Guest Residence

    The property features a rare two-story guest house complete with its own kitchen, laundry, and fireplace, providing exceptional versatility for multi-generational living or a private executive suite.

CONSRISKS & DEFICIENCIES

  • MLS Listing Discrepancy

    Living area discrepancy between mls listing and other public or private record. mls listing living area = 4246, other record living area = 3151. Bedroom count discrepancy between mls listing and other public or private record. mls listing bedroom count = 6, other record bedroom count = 4.

  • Vintage Infrastructure

    Originally built in 1972, the property may present challenges associated with older underlying systems and infrastructure despite the extensive high-end aesthetic renovations.

  • Premium Market Positioning

    At a price point exceeding $4.1 million, the property is positioned at the top of the local market, which may result in a more limited pool of qualified buyers and a longer sales cycle.

About 22 22 Calle Del Casarillo

In the storied enclave of Diablo, where privacy and prestige quietly define the landscape, this masterfully crafted estate presents a rare opportunity to own a home of substance and serenity. Classic Craftsman architecture gives way to soaring interiors filled with natural light and framed garden vistas. Rich wood floors run throughout, grounding the home in warmth and refinement. Dual fireplaces anchor the living and family rooms, while expansive decks blur the line between indoors and out. At the center, a statement kitchen pairs sculptural quartzite with professional-grade Miele appliances — equally suited for intimate dinners or elegant entertaining. The primary suite is designed as a private retreat: heated floors, a spa-caliber wet room bath, and an expansive custom wardrobe evoke the feeling of a five-star resort. A secondary ensuite, two additional bedrooms, and a dedicated pool bath ensure both flexibility and thoughtful design. Outdoors, the estate unfolds into a resort-like sanctuary — sparkling pool, tranquil fountain, firelit evenings beneath the stars, and layered gardens offering both beauty and seclusion. Completing the property is a rare two-story guest residence with its own kitchen, laundry, fireplace, and private yard — ideal for extended family, executive qua

Property Details

Public Facts

Property Type
Single Family Residence
Year Built
1972
Lot Size
20,000 Sq. Ft.

Interior

Total Bedrooms
6
Total Bathrooms
6 (6 Full, 0 Half)

Exterior & Parking

No exterior & parking available.

Utilities & Misc

HOA Fee
$0 / Month

Neighborhood Insights

Diablo Unified Schools

Green Valley Elementary School

Grades K-5 • 1.5 mi

8/10

Los Cerros Middle School

Grades 6-8 • 1.6 mi

9/10

Monte Vista High School

Grades 9-12 • 1.8 mi

10/10

Sensitive Facilities

No sensitive facilities data found.

Neighborhood Comparison

FeatureSubjectAverage HomeNeighborhood Ranking (50 Listings)
Beds6.04.5
60%
Baths6.05.0
60%
Square foot4,2464,620.5
50%
Lot Size20,00026,876.5
30%
Price$4.12M$3.89M
50%
Price per sq ft$971$912
70%
Built year19721974
50%
HOA$0$0
50%
Days on market1084
10%

Pricing History

Listed for Sale

Feb 25, 2026

$4,122,000

Initial Listing

Sold

Jun 9, 2005

$1,492,500

Public Record

Sold

May 27, 1999

$540,000

Public Record

Sold

Mar 18, 1994

$409,000

Public Record

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