Huge Price Reduction! Now Professionally Painted, Staged and ready for Immediate Occupancy! Come Check Out this move-in-ready showplace! Fabulous Castro Valley VIEWS! Upgraded kitchen & bathrooms, inside laundry. Hardwood floors. Low maintenance Professionally landscaped, yards. Large party deck off the kitchen-family room is sure to provide countless hours for creating lots of happy memories with family and friends! Just minutes from downtown Castro Valley, BART, both Eden and Kaiser Medical Centers, two International Airports, three Universities and thousands of High Tech, high paying Job Opportunities! If you saw this one before the mid-June upgrades, Come Check this out again! You won't be sorry. PLUS ask me about the 30 year fixed rate financing with below Market Interest Rate, with as low as 3% Down, (or more...) No Mortgage insurance and a $7500 Credit for Buyer's Closing Costs !!
Single-familyProperty Type
1976Year Built
7,296 sq ftLot Size
$564Price/Sq.Ft.
2 car garageParking
Listed by Steve Moniz•DRE #00373244• Premier Properties
Bought with Ruben Hernandez•DRE #02164467• Kinetic Real Estate
Est. $3,807 per month, based on comparable rentals
Sale and tax history for 21671 Shady Spring Rd
Sale History
Tax History
Date
Event
Price
bridgeMLS, Bay East AOR, or Contra Costa AOR #41128976
Sep 16, 2026
Sold
$920,000
$564/sq ft
Aug 24, 2026
Pending
—
Aug 1, 2026
Price Changed
$999,998
$613/sq ft
Mar 31, 2026
Listed
$1,099,998
$674/sq ft
Public Records
Jul 23, 1993
Sold
$248,500
$152/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$5,915 (+2.6%)
$129,152 + $301,124
$430,276
2024
$5,765 (+2.0%)
$126,620 + $295,220
$421,840
2023
$5,651 (+2.4%)
$124,137 + $289,432
$413,569
2022
$5,517 (+1.2%)
$119,317 + $278,194
$397,511
2021
$5,451 (+1.4%)
$119,317 + $278,194
$397,511
2020
$5,377 (−0.7%)
$116,978 + $272,740
$389,718
2019
$5,414 (+6.3%)
$115,778 + $269,943
$385,721
2018
$5,092 (+2.6%)
$113,508 + $264,651
$378,159
2017
$4,965 (+6.1%)
$109,102 + $254,376
$363,478
2016
$4,680 (+2.8%)
$109,102 + $254,376
$363,478
2015
$4,554 (+5.7%)
$106,963 + $249,389
$356,352
2014
$4,308 (+1.3%)
$103,293 + $240,833
$344,126
2013
$4,252 (+2.2%)
$103,293 + $240,833
$344,126
2012
$4,161 (+1.9%)
$102,827 + $239,745
$342,572
2011
$4,085 (+2.2%)
$100,811 + $235,045
$335,856
2010
$3,997 (−1.3%)
$98,834 + $230,437
$329,271
2009
$4,049 (+4.1%)
$98,096 + $228,716
$326,812
2008
$3,888
$98,329 + $229,259
$327,588
Public record
Public record
Zoning
Permits
Beds
—
Baths
—
Stories
—
Lot width
—
Lot depth
—
Lot size
7,296 Sq. Ft.
Year renovated
1977
Sq. Ft.
1,632
Year built
1976
Style
Single Family Residential
County
Alameda County
APN
415 019000200
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Oct 20, 2026.
R1
Single-Family Residence Districts
Single-family residence districts, hereinafter designated as R-1 districts, are established to provide for and protect established neighborhoods of one-family dwellings, and to provide space in suitable locations for additional development of this kind, together with appropriate community facilities and allowance for restricted interim cultivation of the soil compatible with such low-density residential development.
Permitted uses
Include but are not limited to:
Housing-Single unit
Agriculture-Cropland
Agriculture-Grove / orchard
Dec 23, 2019 • Final
Building
Install a dedicated gas line and a free-standing gas fireplace.
Gas
Feb 18, 2011 • Final
Building
Replace the furnace.
HVAC
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Parking
Parking Information
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Int Access From Garage, Parking Spaces, Garage Faces Front, Garage Door Opener
Interior
Virtual Tour
Bathroom Information
# of Bathrooms Total: 3
# of Bathrooms Full: 2
# of Bathrooms Partial: 1
Interior Features
Appliances: Dishwasher, Gas Range, Oven, Gas Water Heater
Accessibility Features: Grab Bars, Stair Lift
Laundry Features: Inside
Upper Level Features: 3 Bedrooms, 2 Baths, Primary Bedrm Suite - 1, Laundry Facility, Main Entry
Street Level Features: 0.5 Bath
Window Features: Window Coverings
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood, Linoleum, Carpet
Room Information
Kitchen Features: 220 Volt Outlet,Stone Counters,Dishwasher,Eat-in Kitchen,Disposal,Gas Range/Cooktop,Oven Built-in
Rooms Total: 6
Room Type: Basement, Eat-In Kitchen, Game Room, Laundry
Fireplace Features: Family Room, Free Standing, Gas, Metal
Basement: Crawl Space
Exterior
Building Information
Construction Materials: Stone, Stucco, Wood
Building Area Total: 1,632
Foundation Details: Raised
Exterior Features
Patio And Porch Features: Deck, Patio
Exterior Features: Back Yard, Side Yard, Terraced Up, Landscape Back, Landscape Front
Fencing: Fenced
Property Information
Living Area: 1632
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1976
Direction Faces: Northeast
Lot Information
Lot Size Square Feet: 7296
Lot Size Area: 0.167
Lot Size Units: Acres
Lot Size Acres: 0.167
Lot Features: Premium Lot, Sloped Up, Back Yard, Curb(s), Front Yard, Landscaped, Street Light(s)
Utilities
Green Features Information
Green Energy Efficient: Ceiling Insulation
Utility Information
Water Source: Public
Electric: 220 Volts in Kitchen
Sewer: Public Sewer
Heating & Cooling
Has Heating
Heating: Forced Air, Natural Gas, Central
Cooling: No Air Conditioning
Location
Homeowners Association Information
Pets Allowed: Yes
School Information
High School District: Hayward (510) 784-2600
Public facts
Beds: —
Baths: —
Sq. Ft.: 1,632
Stories: —
Lot Size: 7,296 square feet
Style: Single Family Residential
Year Built: 1976
Year Renovated: 1977
County: Alameda County
APN: 415 019000200
Home facts updated by county records on Oct 20, 2026
Around this home
Schools
Fairview Elementary School
Public K-6 • Assigned • 1.8mi
2/10
Bret Harte Middle School
Public 7-8 • Assigned • 1.1mi
4/10
Hayward High School
Public 9-12 • Assigned • 1.3mi
5/10
Provided by GreatSchools
Local insights from Redfin agents
Castro Valley remains a highly competitive market. On average, homes are selling for 103.7% of their asking price, with nearly 60% of properties closing above list price.
Castro Valley's fall market offers great buyer leverage. While median prices hold steady around $1.2M, increased inventory gives you room to negotiate on homes needing updates. Turnkey properties still move fast in under 15 days, so act quickly with...
Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2026. This data may not match public records. Learn more.