4247 Gem Ave, Castro Valley, California 94546, Castro Valley, 94546 - 3 bed, 3 bath
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4247 Gem Ave
Castro Valley, California 94546
ACTIVE
CONDITION: EXCELLENT
3Beds
3Baths
1,737Sq Ft
5,775Lot Size
Property Price
LIST PRICE$999,000
EST. MARKET VALUE
$1,059,968
5% BelowMARKET VALUE
SUMMARY
This Stunning Move-In Ready Home is a Strong Value Opportunity, listed at $999,000—positioned well below the $1,059,968 Fair Market Value by 5%. This valuation gap offers $60,968 in Instant Equity for the buyer. Featuring a Mint Condition Rating with a fully renovated kitchen, new HVAC, and roof, this home offers a lifestyle of comfort. Located near Top-Rated Schools like Marshall Elementary, it is an ideal sanctuary for growing families or first-time buyers seeking a premium, stress-free transition.
Estimated Market Value
$1,059,968+$60,968 Equity Potential
Based on Realkey algorithm analyzing recent comparable sales in Castro Valley.
Comparable Sales Map
Comparables within 1 miles sold in recently
Map unavailable.
| Address | Sold Price | Beds | Baths | Sq Ft | $/Sqft | Distance |
|---|---|---|---|---|---|---|
★ 4247 Gem Ave Subject 3 bd · 3 ba · 1,737 sqft · $610 | $999,000* List Price | 3 | 3 | 1,737 | $610 | - |
A 4315 Omega Ave Sold 3 bd · 2 ba · 1,591 sqft · $666 · 0.1 mi | $1,060,000 | 3 | 2 | 1,591 | $666 | 0.1 mi |
B 19026 Center St Sold 3 bd · 2 ba · 1,740 sqft · $652 · 0.6 mi | $1,135,000 | 3 | 2 | 1,740 | $652 | 0.6 mi |
C 4352 Gem Ave Sold 3 bd · 2 ba · 1,510 sqft · $662 · 0.2 mi | $998,888 | 3 | 2 | 1,510 | $662 | 0.2 mi |
D 18650 Center St Sold 3 bd · 2 ba · 1,681 sqft · $684 · 0.8 mi | $1,150,000 | 3 | 2 | 1,681 | $684 | 0.8 mi |
E 2305 Star Ave Sold 3 bd · 2 ba · 1,586 sqft · $532 · 1.0 mi | $844,500 | 3 | 2 | 1,586 | $532 | 1.0 mi |
F 5239 Katrina Ct Sold 3 bd · 2 ba · 1,576 sqft · $730 · 0.8 mi | $1,150,000 | 3 | 2 | 1,576 | $730 | 0.8 mi |
G 20556 Forest Ave Sold 3 bd · 2 ba · 1,319 sqft · $682 · 0.3 mi | $900,000 | 3 | 2 | 1,319 | $682 | 0.3 mi |
H 4884 Larimer Way Pending 3 bd · 2 ba · 1,599 sqft · $681 · 0.5 mi | $1,088,888 List Price | 3 | 2 | 1,599 | $681 | 0.5 mi |
* Subject property listed price vs sold prices of comps.
Condition Analysis
See Full ReportOVERALL CONDITION SCORE
Excellent
TeardownExcellent
Property is new construction or fully renovated.
The property has undergone a complete, permitted renovation within the last 5 years. It features a modern kitchen with high-end finishes, updated bathrooms, and brand-new major systems including a 200-amp electrical panel, plumbing, HVAC furnace/ductwork, and a new roof, placing it in mint, move-in-ready condition.
PROSSTRENGTHS & OPPORTUNITIES
- Comprehensive Permitted Renovations
The property has undergone extensive, permitted upgrades including a new composition roof, 200-amp electrical panel, updated plumbing, and a new HVAC system, offering the peace of mind typically associated with new construction.
- Prime Educational Proximity
Ideally located for families, the home is within walking distance to highly-rated schools, including Marshall Elementary (0.1 miles) and Creekside Middle School (0.2 miles), both boasting strong academic ratings.
- High-End Modern Finishes
The interior features premium upgrades such as a chef-inspired kitchen with a pot filler and custom cabinetry, designer lighting, and spa-like bathrooms with rainfall showerheads and modern fixtures.
CONSRISKS & DEFICIENCIES
- MLS Listing Discrepancy
Living area discrepancy between mls listing and other public or private record. mls listing living area = 1737, other record living area = 1080.
- Modest Lot Size
At 5,775 square feet, the lot is relatively compact for the area, which may limit options for significant outdoor expansion or large-scale recreational space.
- 1940s Structural Origin
Despite the thorough renovation, the 1947 original build date may result in certain architectural limitations or room proportions that differ from contemporary open-concept designs.
About 4247 Gem Ave
Welcome to 4247 Gem Avenue, a beautifully renovated single-story home in the heart of Castro Valley! Thoughtfully transformed with quality craftsmanship, modern finishes, and extensive upgrades completed with permits. The stunning kitchen features stainless steel appliances, custom cabinetry, a spacious island, and a pot filler. Beautifully designed bathrooms offer walk-in showers, rainfall showerheads, and modern fixtures. Major improvements include new electrical wiring with a 200-amp panel, updated plumbing and drainage, a new HVAC furnace and ductwork, and a new composition roof. Additional highlights include waterproof plank flooring, designer lighting, an EV-ready garage, and refreshed landscaping. Conveniently located near Castro Valley’s highly regarded schools, shopping, dining, and commuter routes. Move-in ready with the peace of mind of permitted improvements!
Property Details
Public Facts
- Property Type
- Single Family Residence
- Year Built
- 1947
- Lot Size
- 5,775 Sq. Ft.
Interior
- Total Bedrooms
- 3
- Total Bathrooms
- 3 (3 Full, 0 Half)
Exterior & Parking
No exterior & parking available.
Utilities & Misc
- HOA Fee
- $0 / Month
Neighborhood Insights
Castro Valley Unified Schools
Marshall Elementary School
Grades K-5 • 0.1 mi
8/10
Creekside Middle School
Grades 6-8 • 0.2 mi
7/10
Canyon Middle School
Grades 6-8 • 0.8 mi
7/10
Sensitive Facilities
No sensitive facilities data found.
Neighborhood Comparison
| Feature | Subject | Average Home |
|---|---|---|
| Beds | 3.0 | 3.4 |
| Baths | 3.0 | 2.3 |
| Square foot | 1,737 | 1,782.99 |
| Lot Size | 5,775 | 7,378.72 |
| Price | $999.0K | $1.26M |
| Price per sq ft | $575 | $700 |
| Built year | 1947 | 1958 |
| HOA | $0 | $201 |
| Days on market | 4 | 39 |
Pricing History
Listed for Sale
Oct 20, 2026
$999,000
Initial Listing
Sold
Jul 29, 2025
$755,000
Public Record