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About this home
Discover an exceptional opportunity at 25489 Palomares Rd, a remarkable estate set on approximately 14 acres in the scenic hills of Castro Valley. Offering approximately 6,890 sq. ft. of total living space, this expansive property features 9 bedrooms and 10 bathrooms, providing abundant room for multi-generational living, extended guests, or a variety of lifestyle possibilities. Your new home offers a unique combination of space, privacy, and flexibility, complemented by a generous six-car garage. Surrounded by beautiful natural scenery, the property provides a peaceful retreat while remaining conveniently located near local amenities and major commuter routes. With its impressive scale and expansive acreage, this one-of-a-kind property offers endless potential for those seeking space, privacy, and a distinctive East Bay lifestyle. An opportunity like this is truly rare.
Single-familyProperty Type
1979Year Built
14.32 acresLot Size
$491Price/Sq.Ft.
6 car garageParking
Listed by Blanca Medellin•DRE #01425242• eXp Realty of California Inc
Listed by Rob Ortiz•DRE #01816989• eXp Realty of California Inc
bridgeMLS, Bay East AOR, or Contra Costa AOR #ML82056195
Aug 25, 2026
Price Changed
$3,380,000
$491/sq ft
Aug 25, 2026
Price Changed
$3,380,000
$491/sq ft
Jul 31, 2026
Listed
$3,800,000
$552/sq ft
Jul 31, 2026
Listed
$3,800,000
$552/sq ft
+11
Discover an exceptional opportunity at 25489 Palomares Rd, a remarkable estate set on approximately 14 acres in the scenic hills of Castro Valley. Offering approximately 6,890 sq. ft. of total living space, this expansive property features 9 bedrooms and 10 bathrooms, providing abundant room for multi-generational living, extended guests, or a variety of lifestyle possibilities. Your new home offers a unique combination of space, privacy, and flexibility, complemented by a generous six-car garage. Surrounded by beautiful natural scenery, the property provides a peaceful retreat while remaining conveniently located near local amenities and major commuter routes. With its impressive scale and expansive acreage, this one-of-a-kind property offers endless potential for those seeking space, privacy, and a distinctive East Bay lifestyle. An opportunity like this is truly rare.
Public Records
Jun 13, 1994
Sold
$799,000
$116/sq ft
Public Records
Mar 1, 1985
Sold
$550,000
$80/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$17,021 (+2.2%)
$552,370 + $805,610
$1,357,980
2024
$16,660 (+2.3%)
$552,370 + $805,610
$1,357,980
2023
$16,281 (+0.7%)
$541,541 + $789,816
$1,331,357
2022
$16,174 (+2.4%)
$520,513 + $759,148
$1,279,661
2021
$15,790 (+2.7%)
$520,513 + $759,148
$1,279,661
2020
$15,381 (−1.6%)
$510,308 + $744,265
$1,254,573
2019
$15,638 (+5.9%)
$505,076 + $736,633
$1,241,709
2018
$14,766 (+3.5%)
$495,173 + $722,191
$1,217,364
2017
$14,273 (+5.1%)
$475,949 + $694,154
$1,170,103
2016
$13,581 (+6.9%)
$475,949 + $694,154
$1,170,103
2015
$12,707 (+0.7%)
$466,618 + $680,545
$1,147,163
2014
$12,622 (+0.4%)
$450,609 + $657,196
$1,107,805
2013
$12,577 (+1.8%)
$450,609 + $657,196
$1,107,805
2012
$12,354 (+1.3%)
$448,574 + $654,229
$1,102,803
2011
$12,197 (+0.6%)
$439,780 + $641,402
$1,081,182
2010
$12,122 (−0.7%)
$431,158 + $628,827
$1,059,985
2009
$12,206 (+2.7%)
$427,937 + $624,130
$1,052,067
2008
$11,879
$428,954 + $625,613
$1,054,567
Public record
Public record
Zoning
Permits
Beds
4
Baths
4
Stories
1.5
Lot width
—
Lot depth
—
Lot size
14.32 Acres
Year renovated
1979
Finished Sq. Ft.
4,270
Unfinished Sq. Ft.
—
Total Sq. Ft.
4,270
Year built
1979
Style
Single Family Residential
County
Alameda County
APN
085A290100100
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 19, 2026.
A
Agricultural Districts
Agricultural districts, hereinafter designated as A districts, are established to promote implementation of general plan land use proposals for agricultural and other nonurban uses, to conserve and protect existing agricultural uses, and to provide space for and encourage such uses in places where more intensive development is not desirable or necessary for the general welfare.
Permitted uses
Include but are not limited to:
Equestrian facility
Greenhouse / nursery
Livestock production
Ranch
Winery & vineyard
Housing-Single unit
Housing-Other
Agriculture-Cropland
Aug 29, 2002 • Active
Building
Replace two package units for heating and air conditioning.
HVAC
Mar 9, 1987 • Final
Building
Relocate the electrical service to a new utility pole for a single-family home.
Electrical
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.
Local insights from Redfin agents
Castro Valley's late-summer market shows a clear split. While median prices hold near $1.2M, increased inventory gives buyers leverage on older properties. However, immaculate homes still go pending in under 15 days. A strong, clean offer is key!
Strong buyer demand keeps the Castro Valley market moving incredibly fast. With homes frequently selling above their $1.2 million median price, decisive action is essential. To win here, buyers need to submit competitive offers quickly and minimize...