For SaleOpen House5d on marketOpen House
18786 Sydney Cir
Castro Valley, CA, 94546 • 94546 • Alameda County
$1,088,000
$606/sqft
Down payment assistance available
4Beds
3Baths
1,796Sqft
0.1 acLot
1991Built
Property DNA
Scenic Views
Hills · Trees/Woods
Contemporary Style
Built 1991 · 35 years of history
Castro Valley
Greenbelt · Other · Guest Parking
Enhanced Security
Carbon Monoxide Detector(s) · Double Strapped Water Heater · Smoke Detector(s)
Outdoor Living
Patio
1 Fireplace
Family Room · Wood Burning
Shed(s)
Shed(s)
2-Car Garage
Attached · Garage Door Opener
This home is getting attention
Listed 5 days ago · 2,894 views · 125 saves
Market activity
Demand and pricing signals for this listing
2,894 views
People checking out this listing
125 saves
Buyers have saved this home
5 days on market
Just listed — act fast
$606/sqft
Price per square foot
About this home
Single Family · Built 1991
Tucked away in a peaceful Castro Valley neighborhood, this beautifully updated home offers privacy, natural light, and stunning hill views. The flexible floor plan features 3 bedrooms plus a spacious loft—ideal as a home office or easily convertible into a 4th bedroom. The home has been thoughtfully refreshed with new interior paint, new flooring, updated light fixtures, newer furnace, upgraded countertops, sinks, and faucets, along with beautifully landscaped outdoor spaces, making it truly move-in ready. Wake up to serene hill views from the primary bedroom, then enjoy a generous backyard with no rear neighbors and open hill views—perfect for quiet morning coffee or hosting gatherings with family and friends, all while enjoying a rare sense of privacy and tranquility. Located in a quiet and established neighborhood, the home provides a peaceful retreat while still being conveniently close to Lake Chabot, parks, shops, restaurants, and easy access to Hwy 580. Top rated Castro Valley School. It’s not just a home, but a lifestyle of comfort, privacy, and community.
Standout features identified
Our analysis highlights beautifully landscaped outdoor spaces, new flooring, and new interior paint as key attractions of this home.
Estimated monthly payment
Based on current rates
$7,082/month
Principal & Interest$5,492
Property Tax$1,088
Insurance$363
HOA$140
Down payment20% ($217,600)
3%50%
Est. 6.48% rate · 30yr fixed · $870,400 loan
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At a glance
Key facts and listing details
TypeResidential, Single Family Residence
Year Built1991
HeatingGravity, Forced Air
CoolingNone
Parking2 Garage spaces
HOA$140 monthly
Lot4,356 sqft
Days on Zillow5 Days
Price/sqft$606
Property
Home typeSingle Family
Sub-typeResidential, Single Family Residence
StyleContemporary
ConditionExisting
Year built1991
Stories2
Systems
HeatingGravity, Forced Air
CoolingNone
RoofComposition
ConstructionWood Siding
Water / SewerPublic / Public Sewer
Parking & Outdoor
ParkingAttached, Garage Door Opener
Garage2 spaces
Fireplaces1
FencingFenced
Lot4,356 sqft
Location & Tax
Neighborhood94546
Parcel84B41529
Bathrooms & Fees
Full baths2
Partial baths1
HOA$140/mo
Features & details
17 categories of property features
Interior Features
Interior
Storage
Updated Kitchen
Appliances
Dishwasher
Microwave
Free-Standing Range
Gas Water Heater
Flooring
Laminate
Carpet
Heating
Gravity
Forced Air
Cooling
None
Laundry
Hookups Only
In Garage
Common Area
Fireplace
Family Room
Wood Burning
Windows
Double Pane Windows
Exterior Features
Exterior
Storage
Low Maintenance
Parking
Attached
Garage Door Opener
Construction
Wood Siding
Patio & Porch
Patio
Lot Features
Premium Lot
Street Light(s)
Wooded
Back Yard
Front Yard
Security
Carbon Monoxide Detector(s)
Double Strapped Water Heater
Smoke Detector(s)
Views
Hills
Trees/Woods
Pool Features
None
Other Structures
Shed(s)
Room details
2 rooms detailed
Bathroom
Shower Over TubStoneWindowSolid SurfaceSplit BathStall ShowerSunken Tub
Kitchen
Stone CountersDishwasherDisposalMicrowaveRange/Oven Free StandingUpdated Kitchen
Listing insights
Market data and value estimates
StatusFor Sale
Days on market5
Est. value$1,069,400
Est. rent$3,626/mo
Tax rate1.22%
Price/sqft$606
On marketApr 2, 2026
PostedApr 2, 2026
Last sold$88,000
MLS updatedApr 7, 2026
Tour days9
Views2,894
Favorites125
How are the schools in Castro Valley?
3 schools rated nearby
Location
Castro Valley, CA, 94546
Price history
5 events
DateEventPrice$/sqftSource
Apr 2, 2026Listed For Sale$1,088,000$606Bay East AOR
Nov 18, 2011Listing Removed$2,245$1Summit Properites Group
Nov 11, 2011Price Change$2,245$1Summit Properites Group
Oct 1, 2011Listed For Rent$2,345$1Summit Properites Group
Nov 26, 1996Sold$88,000$49Public Record
Listed For Sale$1,088,000
Apr 2, 2026•$606/sqft•Bay East AOR
Listing Removed$2,245
Nov 18, 2011•$1/sqft•Summit Properites Group
Price Change$2,245
Nov 11, 2011•$1/sqft•Summit Properites Group
Listed For Rent$2,345
Oct 1, 2011•$1/sqft•Summit Properites Group
Sold$88,000
Nov 26, 1996•$49/sqft•Public Record
Tax history
25 years of records
YearTax paidAssessed value
Apr 7, 2025—$474,448
Apr 7, 2024$6,319$465,146
Apr 7, 2023$6,209$456,028
Apr 7, 2022$6,082$447,087
Apr 7, 2021$5,925$438,321
Apr 7, 2020$5,789$433,828
Apr 7, 2019$5,891$425,325
Apr 7, 2018$5,574$416,987
Apr 7, 2017$5,574$408,812
Apr 7, 2016$5,305$400,798
Apr 7, 2015$4,891$394,779
Apr 7, 2014$4,891$387,047
Apr 7, 2013—$385,300
Apr 7, 2012—$377,746
Apr 7, 2011—$370,340
Apr 7, 2010—$367,573
Apr 7, 2009—$368,447
Apr 7, 2008—$361,224
Apr 7, 2007—$354,143
Apr 7, 2006—$347,200
Apr 7, 2005—$340,395
Apr 7, 2004—$333,721
Apr 7, 2003—$327,607
Apr 7, 2002—$321,183
Apr 7, 2001$3,470$314,884
Nearby homes
Neighborhood details
Local context around this listing
Castro Valley, CA • Alameda County
Nearby cities
AlamedaBerkeleyDublinFremontHaywardLivermoreOaklandPleasanton
Nearby zip codes
9454694552
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