18100 De Souza Pl, Castro Valley, CA, 94546
About This Home
Nestled in a serene, forest-like setting among towering Redwoods and mature landscaping, this exceptional Upper Castro Valley home has been meticulously maintained and offers rare privacy with close proximity to everyday conveniences and top rated schools. A striking exterior opens to an inviting floor plan with vaulted ceilings and oversized windows that flood the home with natural light and hillside views. Seamless flow between the living, dining, and kitchen areas creates an ideal space for both daily living and entertaining. The chef’s kitchen features a large island, stone countertops, designer tile backsplash, and premium stainless-steel appliances including a Wolf 6-burner gas range and Miele double ovens. Cook and dine while enjoying spectacular scenic views. The living room with vaulted ceilings and family room with stone fireplace offer comfort and style. Upstairs, the oversized primary suite boasts tranquil views and a spa-like bath with soaking tub and glass shower, plus two additional bedrooms. The lower level includes a family room and office, fourth bedroom, full bath, workout room and storage. Expansive decks, outdoor kitchen, pergola dining, spa, fire pit, level lawn and water features create a true indoor-outdoor retreat. This is a destination, not a backyard! This home includes a 2-car garage and EV charger and is commuter friendly with access to nearby BART and freeways. Don't miss this exceptional opportunity to start your next chapter in this elegant custom home.
Getting Around
Car-Dependent
Some Transit
Somewhat BikeableSchools
Construction
Condition
- Property condition: Existing
- Year built: 1999
Materials
- Construction materials: Stucco
Type & Style
- Home type: SingleFamily
- Architectural style: Traditional
- Property subType: Single Family Residence
Interior
Appliances
- Appliances included: Dishwasher,Double Oven,Gas Range,Microwave,Oven,Refrigerator,Dryer,Washer
- Laundry features: Dryer,Laundry Room,Washer
Bedrooms & Bathrooms
- Bedrooms: 4
- Bathrooms: 4
- Full bathrooms: 3
- 1/2 bathrooms: 1
Features
- Breakfast Nook,Updated Kitchen
- Window features: Window Coverings
- Flooring: Hardwood,Laminate,Tile,Carpet
- Number of fireplaces: 1
- Fireplace features: Gas
- Fireplace: Yes
Heating & Cooling
- Heating features: Zoned
- Cooling features: Central Air
Interior Area
- Total structure area: 3,400
- Total interior livable area: 3,400 sqft
Kitchen
- Features: Breakfast Nook, Stone Counters, Dishwasher, Double Oven, Disposal, Gas Range/Cooktop, Kitchen Island, Microwave, Oven Built-in, Refrigerator, Updated Kitchen
Property
Details
- Parcel number: 84C86025
- Special condition: Standard
Features
- Levels: Three or More Stories
- Pool features: None
- Exterior features: Back Yard,Front Yard,Garden/Play,Side Yard,Sprinklers Automatic,Sprinklers Front,Storage,Terraced Down,Landscape Back,Landscape Front,Yard Space
- Fencing: Partial
Lot
- Lot size: 7,405 sqft
- Features: Sloped Down,Sprinklers In Rear
Parking
- Total spaces: 4
- Parking features: Attached,Parking Spaces,Garage Door Opener
- Has garage: Yes
- Attached garage spaces: 2
- Covered spaces: 2
Climate Risk is Financial Risk
Every home has a financial story beyond the listing price. Below, you’ll see the climate risks that could affect this property — and in Bills & Affordability, how those risks may influence repairs, insurance, utilities, and long-term value.
Biggest Threats for This Home
- Earthquake
- Inland Flooding
- Heat Wave
- Landslide
- Wildfire
How This Home’s Risks Compare
FEMA Declared Disasters in Alameda County and California
Understanding the Costs
Financial advisors generally recommend spending no more than 30% of your gross household income on housing costs. In practice, many households stretch to 35% or beyond — especially in high-cost markets.
Estimated Costs Today
| Monthly | Annual | |
|---|---|---|
| Mortgage | $10,108 | $121,296 |
| Home Insurance * | $309 | $3,708 |
| Property Taxes | $2,165 | $25,980 |
| Electricity | $729 | $8,749 |
| Total | $13,311 | $159,732 |
Income You'd Need if You Spent...
California FAIR Plan Programs
How Costs Could Change Over Time
Climate risk is quickly impacting all of the major home ownership costs. Adjust the growth rates and percentage of income spent on housing below to see how your housing costs could change over the next 10 years — and what income you'd need to keep up.
Comparing Against the Market
Price Per Sq Ft
vs Other Active Listings
Avg $/sqft
vs Homes Sold Last Month
Median $/sqft
Current Market Trends
Median Price Per Square Foot
The median price per square foot of homes sold in this area each month. Compare this to this listing's price per square foot to gauge whether the home is priced in line with recent sales.
Historicals for This Listing
Zestimate History ($/sqft)
Price History
| Date | Event | Price |
|---|---|---|
| 2026-04-28 | Listed for sale | $1,999,000 |
| 1999-07-09 | Sold | $535,000 |
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