Alameda County  »  18938 Madison Ave

18938 Madison Avenue, Castro Valley, CA 94546 Property Information

18938 Madison Avenue, Castro Valley, CA 94546 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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18938 Madison Avenue, Castro Valley, CA 94546
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Address

Primary address 18938 Madison Avenue, Castro Valley
Zip code 94546
County Alameda
Parcel ID 84C-795-2

Sales & Tax Overview for 18938 Madison Avenue, Castro Valley

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Sale date 12/07/2018
Sale price $694,500
Arm's length
Current property tax $8,936

Lot & Building Information for 18938 Madison Avenue, Castro Valley

Building sqft 982
Building class Single Family Residential Homes Used as Such (1100)
Acreage 0.12
Units 1
Year built 1949
Stories 2
Bedrooms 3
Bathrooms 1
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Zoning, Use & Area Overview

Walk Score
Transit Score
Bike Score


Zoning district Single Family Residential (R1-CSU-RV)
School district Castro Vly Unif SCH

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Other Property Data for 18938 Madison Avenue, Castro Valley

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  • • Improvements for 18938 Madison Avenue, Castro Valley , including their type, square footage, grade and when they were built.
  • Development maps such as planimetric, zoning, land use and urban landscape maps (building age and stories).
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About 18938 Madison Avenue, Castro Valley

What is the year built & the total sq. ft. for 18938 Madison Avenue, Castro Valley, CA 94546?

18938 Madison Avenue, Castro Valley, CA 94546 was built in 1949 and has a total of 982 square feet.

What is the assessed value of 18938 Madison Avenue, Castro Valley, CA 94546 and the property tax paid?

Assessed at $774,714, the tax amount paid for 18938 Madison Avenue, Castro Valley, CA 94546 is $9,017.

When was 18938 Madison Avenue, Castro Valley, CA 94546 last sold and what was the last sale price?

18938 Madison Avenue, Castro Valley, CA 94546 was last sold in 12/07/2018 for $694,500.

Ownership Information

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Real Estate Reports:
Laura Pop-Badiu, May 21, 2026 How to Find Land Boundaries: Free & Paid Methods
If you need to find land boundaries fast, you can start with a free county parcel/GIS viewer or a premium platform like PropertyShark to see an approximate parcel outline and lot data. However, keep in mind that a web-based land boundaries map is a starting point, not the legal finish line.
Laura Pop-Badiu, May 07, 2026 Locked-In Owners, Mobile Renters: Homeowners Stay Put as Renters Move 3.7x More Across Largest U.S. Cities 
Renters became the primary drivers of long-distance mobility across the largest U.S. cities, moving 3.7 times more than owners in 2024, as high mortgage rates and housing costs kept many homeowners in place.
Eliza Theiss, Apr 23, 2026 $4.6M Hudson Yards Maintains Top Spot, Luxury Sales in Malba Set $2.5M Price Record for Queens
Despite prices declining, Hudson Yards remained the most expensive NYC neighborhood, but TriBeCa’s growth closed the gap to under $400,000, while Malba set a new historic price record for Queens at $2.5 million, securing the highest ranking ever for the borough at #5.
Research 100M+ property records powered by:
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Past Sales & Property History for 18938 Madison Avenue, Castro Valley

Create a free account to view the complete sales history for 18938 Madison Avenue, Castro Valley, including title documents, transfer conditions, mortgages and liens.

Purchase date Purchase price Buyer name Seller name
12/07/2018 $694,500
08/31/2015 $613,000
09/13/2001 $50,000
       
       
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*Here are the three most recent sales for this property.


Title Documents for 18938 Madison Avenue, Castro Valley

To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.

Date Type Amount Party 1 Party 2 Maturity Document Doc image
03/22/2021 Deed of trust 04/01/2051
09/17/2020 Deed of trust 09/01/2050
11/08/2019 Deed of Trust 11/01/2049
12/07/2018 Deed of Trust 01/01/2049
12/07/2018 Grant Deed
11/14/2016 Deed of Trust 11/01/2031
08/31/2015 Deed of Trust 09/01/2045
08/31/2015 Grant Deed
04/17/2006 Deed
09/13/2001 Deed
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R: Recorded date
D: Document date

Property Taxes for 18938 Madison Avenue, Castro Valley

Access detailed property tax data for 18938 Madison Avenue, Castro Valley, CA 94546. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year: 2025-2026
Base tax $9,018
Current property tax $8,936
Market value $774,714

Assessment History for 18938 Madison Avenue, Castro Valley

Here's the assessment & property tax history for 18938 Madison Avenue, Castro Valley, including the evolution of the total tax rate and corresponding property tax.

Year Assessment value Total tax rate Property tax Year over year change
2025-2026 $774,714 1.164 $9,018 +0.69%
2024-2025 $759,525 1.1791 $8,956 -48.84%
2023-2024 $744,635 2.3508 $17,505 +101.36%
2022-2023 $730,037 1.1908 $8,693 +2.52%
2021-2022 $715,723 1.1848 $8,480 +2.29%

Permits for 18938 Madison Avenue, Castro Valley

The complete history of permits filed for 18938 Madison Avenue, Castro Valley, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.

Issued Permit Type Status
06/19/2025
04/21/2025
03/06/2019
02/04/2019
       
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Castro Valley residential market stats

Median Sale Price
$989,000
-8.4% YoY
Median Price/Sqft
$669
3.4% YoY
Alameda County Median Sale Price
$965,000
-7.1% YoY

Access a detailed real estate market overview of Castro Valley so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Castro Valley and compare it to other neighborhoods in Alameda County.

Check out recently sold homes in Castro-Valley and see how their prices compare.

Risk

Create a free account to unlock extended information for 18938 Madison Avenue, Castro Valley, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).

FEMA flood zone(s) X (See more on map)
Fire hazard zone See more on map
Faults and tsunami inundation zone map
Landslides and liquefaction map

Transportation

Access the detailed traffic volume map for 18938 Madison Avenue, Castro Valley to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

View daily traffic map

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance to school (mi)
Vannoy Elementary School 7 Public K-5 441 0.24
Early Bird Montessori School NR Private PK, K-1 30 0.27
Early Bird Montessori School NR Private PK, K-1 30 0.27
Castro Valley Adult And Career Education NR Public 0 0.40
Alma Preschool NR Public 52 0.44

Nearest middle schools

Name Rating Type Grade range No of students Distance to school (mi)
Castro Valley Adult And Career Education NR Public 0 0.40
Alma Preschool NR Public 52 0.44
Redwood Christian Schools NR Private K-12 706 0.52
Creekside Middle School 8 Public 6-8 760 0.56
Canyon Middle School 6 Public 6-8 1,332 0.67

Nearest high schools

Name Rating Type Grade range No of students Distance to school (mi)
Castro Valley Adult And Career Education NR Public 0 0.40
Alma Preschool NR Public 52 0.44
Redwood Christian Schools NR Private K-12 706 0.52
Castro Valley High School 9 Public 9-12 2,799 0.77
Liberty School NR Private 1-12 0 1.21

Data provided by GreatSchools.org © 2025. All rights reserved.

Neighbors for 18938 Madison Avenue, Castro Valley

Here are the neighbors for 18938 Madison Avenue, Castro Valley.

Address Square feet Purchase date Purchase price
4854 James Ave, Castro Valley 1,379 06/10/2025
4938 Vannoy Ave, Castro Valley 1,172 05/11/2005 $575,000
19244 Redwood Rd, Castro Valley 3,000 09/19/2013
4914 Vannoy Ave, Castro Valley 1,905 07/29/1992 $146,500
5079 Ray Ave, Castro Valley 1,752 05/31/2024 $1,205,000
19257 James Pl, Castro Valley 1,972 08/19/2024 $1,380,000
4926 Vannoy Ave, Castro Valley 2,104 09/12/2003 $375,000
5019 Ray Ave, Castro Valley 982 03/09/2016
4841 Kathleen Ave, Castro Valley 1,391 07/22/2008
4989 Kathleen Ave, Castro Valley 2,760 11/17/2020
4822 Kathleen Ave, Castro Valley 1,280 12/08/2023 $907,000
4951 Vannoy Ave, Castro Valley 1,275 12/19/2025
5073 Ray Ave, Castro Valley 1,238 04/11/2019
3929 Nichandros St, Castro Valley 1,300 09/15/2020 $881,000
4852 Kathleen Ave, Castro Valley 1,674 02/03/2014
5049 Ray Ave, Castro Valley 1,759 01/30/2019
4069 Nichandros St, Castro Valley 1,300 08/19/2022 $925,000
4847 Kathleen Ave, Castro Valley 1,028 03/26/1999 $219,000
3970 Stevens St, Castro Valley 1,335 05/21/2004 $510,000
4945 Vannoy Ave, Castro Valley 859 12/07/2017 $550,000

Nearby ZIP Codes for 18938 Madison Avenue, Castro Valley

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