| Primary address | 20870 Ashfield Avenue, Castro Valley |
| Alternate address(es) | 20868 Ashfield Ave |
| Zip code | 94546 |
| County | Alameda |
| Parcel ID | 84A-40-40 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 10/03/2023 |
| Sale price | $1,200,000 |
| Arm's length | Register |
| Property tax | $14,247 |
| Building sqft | 1,548 |
| Building class | Double or Duplex Type - Two Units (2200) |
| Acreage | 0.15 |
| Units | 2 |
| Year built | 1958 |
| Stories | 1 |
| Bedrooms | 4 |
| Bathrooms | 2 |
| Zoning district | Cv Central Business District? Subarea 11, W (S11-W) |
| School district | Castro Vly Unif SCH |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
Property reports include comprehensive occupancy, improvement and development information (where available).
Create a free account to access valuable data points such as:
20870 Ashfield Avenue, Castro Valley, CA 94546 was built in 1958 and has a total of 1,548 square feet.
What is the assessed value of 20870 Ashfield Avenue, Castro Valley, CA 94546 and the property tax paid?Assessed at $1,224,000, the tax amount paid for 20870 Ashfield Avenue, Castro Valley, CA 94546 is $14,247.
When was 20870 Ashfield Avenue, Castro Valley, CA 94546 last sold?20870 Ashfield Avenue, Castro Valley, CA 94546 was last sold in 02/25/2025.
How many residential units does this building have?This building has 2 residential unit(s).
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
Create a free account to view the complete sales history for 20870 Ashfield Avenue, Castro Valley, including title documents, transfer conditions, mortgages and liens.
*Here are the three most recent sales for this property.
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.
R: Recorded date
D: Document date
Access detailed property tax data for 20870 Ashfield Avenue, Castro Valley, CA 94546. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025-2026 |
| Property tax | $14,247 |
| Market value | $1,224,000 |
Here's the assessment & property tax history for 20870 Ashfield 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 | $1,224,000 | 1.164 | $14,247 | +0.69% |
| 2024-2025 | $1,200,000 | 1.1791 | $14,149 | +1045.12% |
| 2023-2024 | $52,561 | 2.3508 | $1,236 | +101.36% |
| 2022-2023 | $51,531 | 1.1908 | $614 | +2.44% |
| 2021-2022 | $50,520 | 1.1848 | $599 | +2.36% |
The complete history of permits filed for 20870 Ashfield 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.
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.
Create a free account to unlock extended information for 20870 Ashfield 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 | Register |
| Landslides and liquefaction map | Register |
Access the detailed traffic volume map for 20870 Ashfield 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 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Castro Valley Elementary School | 6 | Public | K-5 | 472 | 0.34 |
| Our Lady Of Grace School | NR | Private | K-8 | 218 | 0.51 |
| Special Education-Preschool-Laurel | NR | Public | 1 | 0.66 | |
| The Montessori Giving Tree | NR | Private | K-6 | 12 | 0.71 |
| Strobridge Elementary School | NR | Public | K-6 | 362 | 0.72 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Our Lady Of Grace School | NR | Private | K-8 | 218 | 0.51 |
| Special Education-Preschool-Laurel | NR | Public | 1 | 0.66 | |
| Redwood Christian Schools | NR | Private | K-12 | 706 | 0.92 |
| Anchor Education, Inc. | NR | Private | 3-12 | 18 | 0.99 |
| Anchor Education, Inc. School | NR | Private | 3-12 | 0 | 1.00 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Special Education-Preschool-Laurel | NR | Public | 1 | 0.66 | |
| Castro Valley High School | 9 | Public | 9-12 | 2,799 | 0.75 |
| Redwood Christian Schools | NR | Private | K-12 | 706 | 0.92 |
| Anchor Education, Inc. | NR | Private | 3-12 | 18 | 0.99 |
| Anchor Education, Inc. School | NR | Private | 3-12 | 0 | 1.00 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 20870 Ashfield Avenue, Castro Valley.