Alameda County  »  1847 Knox St

1847 Knox Street, Castro Valley, CA 94546 Property Information

1847 Knox Street, Castro Valley, CA 94546 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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1847 Knox Street, Castro Valley, CA 94546
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Address

Primary address 1847 Knox Street, Castro Valley
Alternate address(es) 1849 Knox St
Zip code 94546
County Alameda
Parcel ID 415-220-40

Sales & Tax Overview for 1847 Knox Street, Castro Valley

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

Sale date 09/15/2020
Sale price $1,390,000
Arm's length
Property tax $17,614

Lot & Building Information for 1847 Knox Street, Castro Valley

Building sqft 5,440
Building class Multiple Residential Building of 5 or More Units (7700)
Acreage 0.22
Rooms 20
Units 5
Stories 2
Construction type Wood/wood and steel frames
Elevator
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Zoning, Use & Area Overview

Walk Score
Transit Score
Bike Score


Zoning district
School district Hayward Unif SCH

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

Other Property Data for 1847 Knox Street, Castro Valley

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About 1847 Knox Street, Castro Valley

How many square feet does 1847 Knox Street, Castro Valley, CA 94546 have?

This Multiple Residential Building of 5 or More Units (7700) located at 1847 Knox Street, Castro Valley, CA 94546 has a total of 5,440 square feet.

What is the assessed value of 1847 Knox Street, Castro Valley, CA 94546 and the property tax paid?

Assessed at $1,502,398, the tax amount paid for 1847 Knox Street, Castro Valley, CA 94546 is $17,614.

When was 1847 Knox Street, Castro Valley, CA 94546 last sold and what was the last sale price?

1847 Knox Street, Castro Valley, CA 94546 was last sold in 09/15/2020 for $1,390,000.

How many residential units does this building have?

This building has 5 residential unit(s).

Ownership Information

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Real Estate Reports:
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.
Eliza Theiss, Apr 15, 2026 2026 Q1 Foreclosure Report: Brooklyn Filings Fall Sharply, Bronx & Staten Island Hit New Peaks
Behind a deceptively mild citywide downtick, borough foreclosure markets pulled into significantly diverging paths as Brooklyn cases were nearly halved and the Bronx hit a new, record high. Meanwhile, Queens remained unchanged, Staten Island surged back up and Manhattan cooled slowly.
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Past Sales & Property History for 1847 Knox Street, Castro Valley

Create a free account to view the complete sales history for 1847 Knox Street, Castro Valley, including title documents, transfer conditions, mortgages and liens.

Purchase date Purchase price Buyer name Seller name
09/15/2020 $1,390,000

Title Documents for 1847 Knox Street, Castro Valley

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Date Type Amount Party 1 Party 2 Maturity Document Doc image
09/26/2022 Release assignment rents
09/26/2022 Reconveyance
09/20/2022 Deed of trust
Ucc fin stmt(1-2 pgs)
Assignment lease
12/07/2020 Assignment (deed of trust)
11/23/2020 Assignment (deed of trust)
10/30/2020 Assignment (deed of trust)
09/15/2020 Deed of trust
09/15/2020 Grant Deed
09/15/2020 Letters administratix/tor
07/18/2017 Grant Deed
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R: Recorded date
D: Document date

Property Taxes for 1847 Knox Street, Castro Valley

Access detailed property tax data for 1847 Knox Street, 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 $17,614
Market value $1,502,398

Assessment History for 1847 Knox Street, Castro Valley

Here's the assessment & property tax history for 1847 Knox Street, 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 $1,502,398 1.1724 $17,614 +0.98%
2024-2025 $1,472,945 1.1842 $17,443 -22.76%
2023-2024 $1,444,075 1.5638 $22,582 +34.18%
2022-2023 $1,415,760 1.1888 $16,831 +0.81%
2021-2022 $1,388,000 1.2028 $16,695 +192.29%

Permits for 1847 Knox Street, Castro Valley

The complete history of permits filed for 1847 Knox Street, 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
12/16/2020
       
       
       
       
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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.

Demographics by Zip Code

Total population 44,855
Median age 41.7
Average household income $161,274
Family households 74.3%
Occupied housing units 15,565
Owner occupied units 66.3%
Average number of people per household 2.84
Median year structure built 1960
Median value for units with a mortgage $1,065,100
Median value for units without a mortgage $995,000

Risk

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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 1847 Knox Street, 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

Neighbors for 1847 Knox Street, Castro Valley

Here are the neighbors for 1847 Knox Street, Castro Valley.

Address Square feet Purchase date Purchase price
1827 Knox St, Castro Valley 982 07/17/1996
1740 Crescent Ave, Castro Valley 1,666 11/14/2017
22426 Ruby St, Castro Valley 812 12/01/2023
1867 Knox St, Castro Valley 1,428 04/14/2025 $1,045,000
22330 N 4th St, Castro Valley 1,830 05/27/2025
22386 N 4th St, Castro Valley 3,870 01/07/2014
1866 Crescent Ave, Castro Valley 1,000 05/26/2015 $369,000
22374 N 5th St, Castro Valley 1,923 07/18/2023 $1,080,000
1706 Knox St, Castro Valley 1,457 06/22/2021
1728 Crescent Ave, Castro Valley 1,272 06/29/2021 $955,000
22304 N 5th St, Castro Valley 1,422 04/28/2014 $431,000
1812 Crescent Ave, Castro Valley 991 07/30/2003
1681 Crescent Ave, Castro Valley 2,304 08/27/2003
1580 Crescent Ave, Castro Valley 1,290 11/15/2021
22367 N 5th St, Castro Valley 2,116 04/08/2021
1792 Crescent Ave, Castro Valley 1,825 02/05/1999
1835 Knox St, Castro Valley 1,302 09/10/2020 $830,000
1540 Crescent Ave, Castro Valley 1,122 11/10/2004
1753 Knox St, Castro Valley 2,240 06/10/2025
1857 Knox St, Castro Valley 1,075 11/27/2023

Nearby ZIP Codes for 1847 Knox Street, Castro Valley

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